{ "schema_version": 1, "description": "Brave on Windows, measured on each cosmetic fixture in Standard and Aggressive (ENG-2287). The verdict is the element state through 9 s after navigation. hidden-then-visible means Brave hid the element and later un-hid it (the Standard first-party un-hide). Re-measure when the Brave major version changes; the procedure is in Adblock.Documentation reference/repo-workflows/Adblock.ReleaseTests.md.", "ticket": "https://linear.app/adblock-labs/issue/ENG-2287", "brave": { "version": "154.1.96.61", "chromium": "154.0.8037.98", "platform": "Windows 11 (VM 1001), --headless=new, fresh profile per run", "measured_utc": "2026-10-04", "runs": { "std1": { "mode": "standard", "started_utc": "2026-10-04T16:19:39.282Z" }, "std2": { "mode": "standard", "started_utc": "2026-10-04T16:35:00.167Z" }, "aggr1": { "mode": "aggressive", "started_utc": "2026-10-04T16:22:53.880Z" }, "aggr2": { "mode": "aggressive", "started_utc": "2026-10-04T16:38:14.711Z" } }, "standard_profile": "Brave default shields (no seed)", "aggressive_profile": "Default\\Preferences profile.content_settings.exceptions: shieldsAds=2, trackers=2, cosmeticFilteringV2={cosmeticFilteringV2:1} at \"*,*\" (BraveLauncher.TrySeedAggressiveShields); verified present after each run", "list_warm_ms": 75000, "component_versions": [ "adcocjohghhfpidemphmcmlmhnfgikei/1.0.482", "afalakplffnnnlkncjhbmahjfjhmlkal/1.0.1532", "aoojcmojmmcbpfgoecoadbdpnagfchel/1.0.25", "bfpgedeaaibpoidldhjcknekahbikncb/1.0.16885", "cdbbhgbmjhfnhnmgeddbliobbofkgdhe/1.0.20109", "cemdlagocoimleflkfkjoihojfainiho/1.0.174", "dkpggglmbjhgjhachikgmohmecomjndo/1.0.0", "ecajlggcmpeepanklgklbpdoeibmahen/1.0.2508", "ecneelfoifpgnignhipdebhbkgcphmic/1.0.54", "eingdhelnaolbpcdkgddekhifcjfkalf/1.0.2", "gkboaolpopklhgplhaaiboijnklogmbc/1.0.97", "iodkpdagapdfkphljnddpjlldadblomo/1.0.22724", "jmfhneobcdckobmonkfjkbknnjjnegoh/1.0.0", "kihnoaefogbkmblfimmibknnmkllbhlf/1.0.8302", "mfddibmblmbccpadfndgakiopmmhebop/1.0.155", "nlpaeekllejnmhoonlpcefpfnpbajbpe/1.0.578" ], "served_with": "site certificate (issuer WE1) on every page of every counted run; Adblock.Service stopped" }, "list_rules_source": { "catalog": "https://raw.githubusercontent.com/brave/adblock-resources/master/filter_lists/list_catalog.json (default_enabled lists)", "fetched_utc": "2026-10-04T16:1xZ", "easylist_version": "202610041600", "scope": "rules that apply on test-adblock.com: generic hide rules, generic #@# exceptions, and rules whose only domains are negated. Domain-specific rules for other sites are omitted.", "tiers": "un-hideable = list flagged first_party_protections in the catalog (Brave Default Adblock Filters, which includes EasyList and uBO); force = default-enabled list without that flag (Brave First Party Adblock Filters).", "caveat": "These are the upstream source lists on the fetch date, not a dump of the compiled lists inside Brave's components; the measured verdicts are the authority." }, "ours_reference": { "build": "2.3.2241.0", "mode": "Standard (product default; hide1pContent=false in the run)", "run": "https://github.com/AdblockLabs/Adblock.ReleaseTests/actions/runs/37147989705", "scope_note": "cosmetic-standard-strip is not in the Blocking shard (opt-in CosmeticStandardStrip category), so the run has no result for it." }, "ours_reference_aggressive": { "build": "2.3.2280.0", "mode": "Aggressive (FilteringModeOverride=aggressive, hide1pContent=true observed on every page)", "run": "https://github.com/AdblockLabs/Adblock.ReleaseTests/actions/runs/37243167836", "test": "Adblock.ReleaseTests CosmeticAggressiveFixturesTests (ReleaseTests #915), two-phase read; hidden = hidden on the early and the settled read", "control": "https://github.com/AdblockLabs/Adblock.ReleaseTests/actions/runs/37243238234 (same test with the override set to standard: cosmetic-id-adbanner and -1p visible on the settled read, the other seven unchanged)", "scope_note": "Every comparable selector agrees with brave.aggressive.verdict (9 of 9). cosmetic-standard-strip and the runtime pages carry no Aggressive verdict and are not graded; cosmetic-zstd-generic-hide is a transport fixture outside this manifest." }, "pages": [ { "name": "cosmetic-ad-zone", "path": "/cosmetic-ad-zone", "note": "Known-positive control. Its only generic rule is in Brave First Party Adblock Filters, a list without first_party_protections, so Brave never un-hides it although the element shows significant text.", "selectors": [ { "selector": ".ad-zone", "role": "target", "brave_list_rules": [ { "rule": "##.ad-zone", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 463, "tier": "force", "kind": "hide" } ], "brave": { "standard": { "verdict": "hidden", "runs": { "std1": { "settled": "hidden", "first_hidden_ms": 184, "unhidden_ms": null, "transitions": [ "156ms:absent", "164ms:visible", "184ms:HIDDEN" ], "cdp_samples": [ "316ms:HIDDEN", "702ms:HIDDEN", "1210ms:HIDDEN", "2514ms:HIDDEN", "5008ms:HIDDEN", "9009ms:HIDDEN" ] }, "std2": { "settled": "hidden", "first_hidden_ms": 198, "unhidden_ms": null, "transitions": [ "170ms:absent", "177ms:visible", "198ms:HIDDEN" ], "cdp_samples": [ "309ms:HIDDEN", "701ms:HIDDEN", "1214ms:HIDDEN", "2501ms:HIDDEN", "5015ms:HIDDEN", "9000ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "std1": "hidden", "std2": "hidden" }, "agrees_with_154": true } }, "aggressive": { "verdict": "hidden", "runs": { "aggr1": { "settled": "hidden", "first_hidden_ms": 176, "unhidden_ms": null, "transitions": [ "150ms:absent", "156ms:visible", "176ms:HIDDEN" ], "cdp_samples": [ "314ms:HIDDEN", "705ms:HIDDEN", "1215ms:HIDDEN", "2511ms:HIDDEN", "5007ms:HIDDEN", "9008ms:HIDDEN" ] }, "aggr2": { "settled": "hidden", "first_hidden_ms": 207, "unhidden_ms": null, "transitions": [ "180ms:absent", "186ms:visible", "207ms:HIDDEN" ], "cdp_samples": [ "306ms:HIDDEN", "703ms:HIDDEN", "1210ms:HIDDEN", "2502ms:HIDDEN", "5005ms:HIDDEN", "9003ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "aggr1": "hidden", "aggr2": "hidden" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden", "ours_2_3_2241_0_standard": "hidden", "ours_2_3_2280_0_aggressive": "hidden" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-generic-hide", "path": "/cosmetic-generic-hide", "note": "EasyList has only domain-specific `##.banner-ad` rules (none for test-adblock.com); the generic rule Brave applies is in Brave First Party Adblock Filters, so it stays hidden in Standard.", "selectors": [ { "selector": ".banner-ad", "role": "target", "brave_list_rules": [ { "rule": "##.banner-ad", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 351, "tier": "force", "kind": "hide" } ], "brave": { "standard": { "verdict": "hidden", "runs": { "std1": { "settled": "hidden", "first_hidden_ms": 95, "unhidden_ms": null, "transitions": [ "74ms:absent", "80ms:visible", "95ms:HIDDEN" ], "cdp_samples": [ "316ms:HIDDEN", "701ms:HIDDEN", "1204ms:HIDDEN", "2508ms:HIDDEN", "5017ms:HIDDEN", "9002ms:HIDDEN" ] }, "std2": { "settled": "hidden", "first_hidden_ms": 83, "unhidden_ms": null, "transitions": [ "62ms:absent", "68ms:visible", "83ms:HIDDEN" ], "cdp_samples": [ "303ms:HIDDEN", "710ms:HIDDEN", "1210ms:HIDDEN", "2502ms:HIDDEN", "5006ms:HIDDEN", "9001ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "std1": "hidden", "std2": "hidden" }, "agrees_with_154": true } }, "aggressive": { "verdict": "hidden", "runs": { "aggr1": { "settled": "hidden", "first_hidden_ms": 99, "unhidden_ms": null, "transitions": [ "57ms:absent", "62ms:visible", "99ms:HIDDEN" ], "cdp_samples": [ "304ms:HIDDEN", "710ms:HIDDEN", "1202ms:HIDDEN", "2500ms:HIDDEN", "5004ms:HIDDEN", "9001ms:HIDDEN" ] }, "aggr2": { "settled": "hidden", "first_hidden_ms": 106, "unhidden_ms": null, "transitions": [ "59ms:absent", "64ms:visible", "106ms:HIDDEN" ], "cdp_samples": [ "301ms:HIDDEN", "706ms:HIDDEN", "1208ms:HIDDEN", "2511ms:HIDDEN", "5007ms:HIDDEN", "9001ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "aggr1": "hidden", "aggr2": "hidden" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden", "ours_2_3_2241_0_standard": "hidden", "ours_2_3_2280_0_aggressive": "hidden" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-ad-wrapper", "path": "/cosmetic-ad-wrapper", "note": "Generic in EasyList (un-hideable tier) and in Brave First Party Adblock Filters (force tier). The element shows significant text, so the EasyList match alone would be un-hidden in Standard; the force-tier copy keeps it hidden.", "selectors": [ { "selector": ".ad-wrapper", "role": "target", "brave_list_rules": [ { "rule": "##.ad-wrapper", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 6990, "tier": "un-hideable", "kind": "hide" }, { "rule": "##.ad-wrapper", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 458, "tier": "force", "kind": "hide" } ], "brave": { "standard": { "verdict": "hidden", "runs": { "std1": { "settled": "hidden", "first_hidden_ms": 85, "unhidden_ms": null, "transitions": [ "59ms:absent", "65ms:visible", "85ms:HIDDEN" ], "cdp_samples": [ "306ms:HIDDEN", "701ms:HIDDEN", "1205ms:HIDDEN", "2501ms:HIDDEN", "5016ms:HIDDEN", "9005ms:HIDDEN" ] }, "std2": { "settled": "hidden", "first_hidden_ms": 84, "unhidden_ms": null, "transitions": [ "57ms:absent", "64ms:visible", "84ms:HIDDEN" ], "cdp_samples": [ "301ms:HIDDEN", "713ms:HIDDEN", "1213ms:HIDDEN", "2501ms:HIDDEN", "5007ms:HIDDEN", "9015ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "std1": "hidden", "std2": "hidden" }, "agrees_with_154": true } }, "aggressive": { "verdict": "hidden", "runs": { "aggr1": { "settled": "hidden", "first_hidden_ms": 76, "unhidden_ms": null, "transitions": [ "56ms:absent", "61ms:visible", "76ms:HIDDEN" ], "cdp_samples": [ "317ms:HIDDEN", "702ms:HIDDEN", "1211ms:HIDDEN", "2506ms:HIDDEN", "5013ms:HIDDEN", "9001ms:HIDDEN" ] }, "aggr2": { "settled": "hidden", "first_hidden_ms": 83, "unhidden_ms": null, "transitions": [ "58ms:absent", "63ms:visible", "83ms:HIDDEN" ], "cdp_samples": [ "317ms:HIDDEN", "702ms:HIDDEN", "1201ms:HIDDEN", "2503ms:HIDDEN", "5004ms:HIDDEN", "9004ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "aggr1": "hidden", "aggr2": "hidden" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden", "ours_2_3_2241_0_standard": "hidden", "ours_2_3_2280_0_aggressive": "hidden" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-ad-slot", "path": "/cosmetic-ad-slot", "note": "uBO filters-2021 and Brave First Party Adblock Filters each list a generic `#@#.ad-slot`, but adblock-rust rejects a generic #@# at parse (cosmetic.rs:438), so neither exception has any effect in Brave or in our product (corrected under ENG-2306). The plain EasyList rule is un-hideable; the force-tier `:not(.adsbox):not(.adsbygoogle)` variant in Brave First Party Adblock Filters keeps the element hidden in Standard.", "selectors": [ { "selector": ".ad-slot", "role": "target", "brave_list_rules": [ { "rule": "#@#.ad-slot", "list": "uBO filters-2021", "source_url": "https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/filters-2021.txt", "line": 3894, "tier": "un-hideable", "kind": "exception", "effect": "inert: adblock-rust rejects a generic #@# at parse (cosmetic.rs:438, GenericUnhide), in Brave and in our product" }, { "rule": "##.ad-slot:not(.adsbox):not(.adsbygoogle)", "list": "uBO filters-2021", "source_url": "https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/filters-2021.txt", "line": 3895, "tier": "un-hideable", "kind": "hide" }, { "rule": "##.ad-slot", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 6767, "tier": "un-hideable", "kind": "hide" }, { "rule": "#@#.ad-slot", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 1035, "tier": "force", "kind": "exception", "effect": "inert: adblock-rust rejects a generic #@# at parse (cosmetic.rs:438, GenericUnhide), in Brave and in our product" }, { "rule": "##.ad-slot:not(.adsbox):not(.adsbygoogle)", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 1036, "tier": "force", "kind": "hide" } ], "brave": { "standard": { "verdict": "hidden", "runs": { "std1": { "settled": "hidden", "first_hidden_ms": 84, "unhidden_ms": null, "transitions": [ "64ms:absent", "70ms:visible", "84ms:HIDDEN" ], "cdp_samples": [ "301ms:HIDDEN", "707ms:HIDDEN", "1202ms:HIDDEN", "2514ms:HIDDEN", "5016ms:HIDDEN", "9001ms:HIDDEN" ] }, "std2": { "settled": "hidden", "first_hidden_ms": 93, "unhidden_ms": null, "transitions": [ "67ms:absent", "73ms:visible", "93ms:HIDDEN" ], "cdp_samples": [ "309ms:HIDDEN", "703ms:HIDDEN", "1215ms:HIDDEN", "2514ms:HIDDEN", "5014ms:HIDDEN", "9008ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "std1": "hidden", "std2": "hidden" }, "agrees_with_154": true } }, "aggressive": { "verdict": "hidden", "runs": { "aggr1": { "settled": "hidden", "first_hidden_ms": 88, "unhidden_ms": null, "transitions": [ "68ms:absent", "72ms:visible", "88ms:HIDDEN" ], "cdp_samples": [ "313ms:HIDDEN", "702ms:HIDDEN", "1207ms:HIDDEN", "2507ms:HIDDEN", "5010ms:HIDDEN", "9009ms:HIDDEN" ] }, "aggr2": { "settled": "hidden", "first_hidden_ms": 82, "unhidden_ms": null, "transitions": [ "62ms:absent", "67ms:visible", "82ms:HIDDEN" ], "cdp_samples": [ "310ms:HIDDEN", "703ms:HIDDEN", "1215ms:HIDDEN", "2509ms:HIDDEN", "5012ms:HIDDEN", "9006ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "aggr1": "hidden", "aggr2": "hidden" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden", "ours_2_3_2241_0_standard": "hidden", "ours_2_3_2280_0_aggressive": "hidden" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-ad-unit", "path": "/cosmetic-ad-unit", "note": "Same shape as cosmetic-ad-slot: the generic `#@#.ad-unit` exceptions in uBO filters-2021 and Brave First Party Adblock Filters are rejected at parse by adblock-rust (cosmetic.rs:438) and have no effect (corrected under ENG-2306). The force-tier `:not(...)` variant in Brave First Party Adblock Filters keeps it hidden in Standard.", "selectors": [ { "selector": ".ad-unit", "role": "target", "brave_list_rules": [ { "rule": "#@#.ad-unit", "list": "uBO filters-2021", "source_url": "https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/filters-2021.txt", "line": 3884, "tier": "un-hideable", "kind": "exception", "effect": "inert: adblock-rust rejects a generic #@# at parse (cosmetic.rs:438, GenericUnhide), in Brave and in our product" }, { "rule": "~lamire.jp,~tinhte.vn##.ad-unit:not(.adsbox, .text-ad, .textads):not([style^=\"width: 1px; height: 1px; position: absolute;\"])", "list": "uBO filters-2021", "source_url": "https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/filters-2021.txt", "line": 3886, "tier": "un-hideable", "kind": "hide" }, { "rule": "##.ad-unit", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 6932, "tier": "un-hideable", "kind": "hide" }, { "rule": "##.ad-unit:not(.adsbox, .text-ad, .textads):not([style^=\"width: 1px; height: 1px; position: absolute;\"])", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 1004, "tier": "force", "kind": "hide" }, { "rule": "#@#.ad-unit", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 1027, "tier": "force", "kind": "exception", "effect": "inert: adblock-rust rejects a generic #@# at parse (cosmetic.rs:438, GenericUnhide), in Brave and in our product" } ], "brave": { "standard": { "verdict": "hidden", "runs": { "std1": { "settled": "hidden", "first_hidden_ms": 88, "unhidden_ms": null, "transitions": [ "67ms:absent", "73ms:visible", "88ms:HIDDEN" ], "cdp_samples": [ "309ms:HIDDEN", "700ms:HIDDEN", "1201ms:HIDDEN", "2505ms:HIDDEN", "5015ms:HIDDEN", "9008ms:HIDDEN" ] }, "std2": { "settled": "hidden", "first_hidden_ms": 74, "unhidden_ms": null, "transitions": [ "52ms:absent", "58ms:visible", "74ms:HIDDEN" ], "cdp_samples": [ "320ms:HIDDEN", "705ms:HIDDEN", "1201ms:HIDDEN", "2509ms:HIDDEN", "5011ms:HIDDEN", "9006ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "std1": "hidden", "std2": "hidden" }, "agrees_with_154": true } }, "aggressive": { "verdict": "hidden", "runs": { "aggr1": { "settled": "hidden", "first_hidden_ms": 82, "unhidden_ms": null, "transitions": [ "61ms:absent", "66ms:visible", "82ms:HIDDEN" ], "cdp_samples": [ "312ms:HIDDEN", "703ms:HIDDEN", "1205ms:HIDDEN", "2503ms:HIDDEN", "5010ms:HIDDEN", "9002ms:HIDDEN" ] }, "aggr2": { "settled": "hidden", "first_hidden_ms": 87, "unhidden_ms": null, "transitions": [ "66ms:absent", "71ms:visible", "87ms:HIDDEN" ], "cdp_samples": [ "309ms:HIDDEN", "704ms:HIDDEN", "1210ms:HIDDEN", "2515ms:HIDDEN", "5011ms:HIDDEN", "9010ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "aggr1": "hidden", "aggr2": "hidden" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden", "ours_2_3_2241_0_standard": "hidden", "ours_2_3_2280_0_aggressive": "hidden" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-id-adbanner", "path": "/cosmetic-id-adbanner", "note": "Only rule is EasyList `###navAdBanner` (un-hideable tier). Plain text, no resources: Brave hides it, then un-hides it in Standard; Aggressive never un-hides.", "selectors": [ { "selector": "#navAdBanner", "role": "target", "brave_list_rules": [ { "rule": "###navAdBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 4592, "tier": "un-hideable", "kind": "hide" } ], "brave": { "standard": { "verdict": "hidden-then-visible", "runs": { "std1": { "settled": "visible", "first_hidden_ms": 104, "unhidden_ms": 658, "transitions": [ "58ms:absent", "65ms:visible", "104ms:HIDDEN", "658ms:visible" ], "cdp_samples": [ "309ms:HIDDEN", "704ms:visible", "1221ms:visible", "2516ms:visible", "5011ms:visible", "9014ms:visible" ] }, "std2": { "settled": "visible", "first_hidden_ms": 108, "unhidden_ms": 653, "transitions": [ "66ms:absent", "72ms:visible", "108ms:HIDDEN", "653ms:visible" ], "cdp_samples": [ "305ms:HIDDEN", "711ms:visible", "1202ms:visible", "2503ms:visible", "5004ms:visible", "9002ms:visible" ] } }, "brave_155": { "verdicts": { "std1": "hidden-then-visible", "std2": "hidden-then-visible" }, "agrees_with_154": true } }, "aggressive": { "verdict": "hidden", "runs": { "aggr1": { "settled": "hidden", "first_hidden_ms": 81, "unhidden_ms": null, "transitions": [ "55ms:absent", "60ms:visible", "81ms:HIDDEN" ], "cdp_samples": [ "313ms:HIDDEN", "708ms:HIDDEN", "1215ms:HIDDEN", "2515ms:HIDDEN", "5004ms:HIDDEN", "9001ms:HIDDEN" ] }, "aggr2": { "settled": "hidden", "first_hidden_ms": 120, "unhidden_ms": null, "transitions": [ "77ms:absent", "83ms:visible", "120ms:HIDDEN" ], "cdp_samples": [ "307ms:HIDDEN", "702ms:HIDDEN", "1215ms:HIDDEN", "2514ms:HIDDEN", "5003ms:HIDDEN", "9011ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "aggr1": "hidden", "aggr2": "hidden" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden-then-visible", "ours_2_3_2241_0_standard": "hidden-then-visible", "ours_2_3_2280_0_aggressive": "hidden" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-id-adbanner-3p", "path": "/cosmetic-id-adbanner-3p", "note": "Third-party image and the two-letter label \"Ad\": neither un-hide branch applies, so hidden in both modes. ENG-2306 moved the image from www.adblocklabs.com/favicon.ico to test-adblock.org/fixture-3p.png (test-owned, on no shipped list); the measured verdict is from the old image host and is re-measured in the second-domain VM 1001 pass.", "selectors": [ { "selector": "#navAdBanner", "role": "target", "brave_list_rules": [ { "rule": "###navAdBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 4592, "tier": "un-hideable", "kind": "hide" } ], "brave": { "standard": { "verdict": "hidden", "runs": { "std1": { "settled": "hidden", "first_hidden_ms": 80, "unhidden_ms": null, "transitions": [ "53ms:absent", "59ms:visible", "80ms:HIDDEN" ], "cdp_samples": [ "313ms:HIDDEN", "705ms:HIDDEN", "1209ms:HIDDEN", "2506ms:HIDDEN", "5009ms:HIDDEN", "9002ms:HIDDEN" ] }, "std2": { "settled": "hidden", "first_hidden_ms": 109, "unhidden_ms": null, "transitions": [ "60ms:absent", "66ms:visible", "109ms:HIDDEN" ], "cdp_samples": [ "314ms:HIDDEN", "702ms:HIDDEN", "1204ms:HIDDEN", "2504ms:HIDDEN", "5006ms:HIDDEN", "9001ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "std1": "hidden", "std2": "hidden" }, "agrees_with_154": true } }, "aggressive": { "verdict": "hidden", "runs": { "aggr1": { "settled": "hidden", "first_hidden_ms": 92, "unhidden_ms": null, "transitions": [ "65ms:absent", "71ms:visible", "92ms:HIDDEN" ], "cdp_samples": [ "308ms:HIDDEN", "713ms:HIDDEN", "1200ms:HIDDEN", "2515ms:HIDDEN", "5007ms:HIDDEN", "9004ms:HIDDEN" ] }, "aggr2": { "settled": "hidden", "first_hidden_ms": 102, "unhidden_ms": null, "transitions": [ "76ms:absent", "81ms:visible", "102ms:HIDDEN" ], "cdp_samples": [ "301ms:HIDDEN", "705ms:HIDDEN", "1202ms:HIDDEN", "2512ms:HIDDEN", "5017ms:HIDDEN", "9011ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "aggr1": "hidden", "aggr2": "hidden" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden", "ours_2_3_2241_0_standard": "hidden", "ours_2_3_2280_0_aggressive": "hidden" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-id-adbanner-1p", "path": "/cosmetic-id-adbanner-1p", "note": "Same-origin image and the label \"Ad\": the first-party-resource branch un-hides it in Standard; Aggressive never un-hides.", "selectors": [ { "selector": "#navAdBanner", "role": "target", "brave_list_rules": [ { "rule": "###navAdBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 4592, "tier": "un-hideable", "kind": "hide" } ], "brave": { "standard": { "verdict": "hidden-then-visible", "runs": { "std1": { "settled": "visible", "first_hidden_ms": 109, "unhidden_ms": 644, "transitions": [ "62ms:absent", "68ms:visible", "109ms:HIDDEN", "644ms:visible" ], "cdp_samples": [ "312ms:HIDDEN", "703ms:visible", "1212ms:visible", "2512ms:visible", "5001ms:visible", "9004ms:visible" ] }, "std2": { "settled": "visible", "first_hidden_ms": 127, "unhidden_ms": 638, "transitions": [ "63ms:absent", "71ms:visible", "127ms:HIDDEN", "638ms:visible" ], "cdp_samples": [ "313ms:HIDDEN", "701ms:visible", "1216ms:visible", "2502ms:visible", "5014ms:visible", "9003ms:visible" ] } }, "brave_155": { "verdicts": { "std1": "hidden-then-visible", "std2": "hidden-then-visible" }, "agrees_with_154": true } }, "aggressive": { "verdict": "hidden", "runs": { "aggr1": { "settled": "hidden", "first_hidden_ms": 91, "unhidden_ms": null, "transitions": [ "64ms:absent", "70ms:visible", "91ms:HIDDEN" ], "cdp_samples": [ "301ms:HIDDEN", "710ms:HIDDEN", "1208ms:HIDDEN", "2512ms:HIDDEN", "5007ms:HIDDEN", "9003ms:HIDDEN" ] }, "aggr2": { "settled": "hidden", "first_hidden_ms": 113, "unhidden_ms": null, "transitions": [ "65ms:absent", "71ms:visible", "113ms:HIDDEN" ], "cdp_samples": [ "302ms:HIDDEN", "710ms:HIDDEN", "1214ms:HIDDEN", "2509ms:HIDDEN", "5004ms:HIDDEN", "9004ms:HIDDEN" ] } }, "brave_155": { "verdicts": { "aggr1": "hidden", "aggr2": "hidden" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden-then-visible", "ours_2_3_2241_0_standard": "hidden-then-visible", "ours_2_3_2280_0_aggressive": "hidden" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-negative-control", "path": "/cosmetic-negative-control", "note": "Negative control. No shipped rule matches `.article-body` on test-adblock.com (the only rules naming it are domain-specific for other sites).", "selectors": [ { "selector": ".article-body", "role": "negative-control", "brave_list_rules": [], "brave": { "standard": { "verdict": "visible", "runs": { "std1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "63ms:absent", "69ms:visible" ], "cdp_samples": [ "313ms:visible", "706ms:visible", "1209ms:visible", "2513ms:visible", "5011ms:visible", "9003ms:visible" ] }, "std2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "48ms:absent", "53ms:visible" ], "cdp_samples": [ "310ms:visible", "701ms:visible", "1212ms:visible", "2505ms:visible", "5009ms:visible", "9020ms:visible" ] } }, "brave_155": { "verdicts": { "std1": "visible", "std2": "visible" }, "agrees_with_154": true } }, "aggressive": { "verdict": "visible", "runs": { "aggr1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "55ms:absent", "60ms:visible" ], "cdp_samples": [ "316ms:visible", "708ms:visible", "1209ms:visible", "2502ms:visible", "5012ms:visible", "9007ms:visible" ] }, "aggr2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "57ms:absent", "62ms:visible" ], "cdp_samples": [ "309ms:visible", "703ms:visible", "1207ms:visible", "2501ms:visible", "5001ms:visible", "9010ms:visible" ] } }, "brave_155": { "verdicts": { "aggr1": "visible", "aggr2": "visible" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "visible", "ours_2_3_2241_0_standard": "visible", "ours_2_3_2280_0_aggressive": "visible" } ], "brave_comparison": "comparable" }, { "name": "cosmetic-runtime-var-w", "path": "/cosmetic-runtime-var-w", "note": "Runtime-isolation health page with no cosmetic target. No Brave rule; not comparable. The page sentinel initialised in Brave in both modes (Brave injects no `window.content_cosmetic`).", "selectors": [], "brave_comparison": "no Brave rule; not comparable", "brave_page_health": { "std1": { "alive": true, "exceptions": [] }, "std2": { "alive": true, "exceptions": [] }, "aggr1": { "alive": true, "exceptions": [] }, "aggr2": { "alive": true, "exceptions": [] } } }, { "name": "cosmetic-runtime-var-cc", "path": "/cosmetic-runtime-var-cc", "note": "Runtime-isolation health page with no cosmetic target. No Brave rule; not comparable. The page sentinel initialised in Brave in both modes.", "selectors": [], "brave_comparison": "no Brave rule; not comparable", "brave_page_health": { "std1": { "alive": true, "exceptions": [] }, "std2": { "alive": true, "exceptions": [] }, "aggr1": { "alive": true, "exceptions": [] }, "aggr2": { "alive": true, "exceptions": [] } } }, { "name": "cosmetic-standard-strip", "path": "/cosmetic-standard-strip", "note": "Depends only on rules our CosmeticStandardStripTests stages (`test-adblock.com##.standard-plain-ad`, `test-adblock.com##.standard-procedural-target:has-text(Procedural marker)`). Brave's shipped lists have no rule for any element on the page, so every element stayed visible in Brave in both modes. No Brave rule; not comparable. Brave adds custom rules to its force engine, so a staged-rule Brave arm would not measure the un-hideable tier either.", "staged_rules": [ { "rule": "test-adblock.com##.standard-plain-ad", "source": "staged by Adblock.ReleaseTests Tests/CosmeticStandardStripTests.cs (not in any Brave list)" }, { "rule": "test-adblock.com##.standard-procedural-target:has-text(Procedural marker)", "source": "staged by Adblock.ReleaseTests Tests/CosmeticStandardStripTests.cs (not in any Brave list)" } ], "selectors": [ { "selector": ".standard-plain-ad", "role": "target", "brave_list_rules": [], "brave": { "standard": { "verdict": "visible", "runs": { "std1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "54ms:absent", "60ms:visible" ], "cdp_samples": [ "309ms:visible", "703ms:visible", "1203ms:visible", "2511ms:visible", "5007ms:visible", "9002ms:visible" ] }, "std2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "60ms:absent", "69ms:visible" ], "cdp_samples": [ "307ms:visible", "714ms:visible", "1203ms:visible", "2501ms:visible", "5010ms:visible", "9012ms:visible" ] } }, "brave_155": { "verdicts": { "std1": "visible", "std2": "visible" }, "agrees_with_154": true } }, "aggressive": { "verdict": "visible", "runs": { "aggr1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "53ms:absent", "58ms:visible" ], "cdp_samples": [ "302ms:visible", "711ms:visible", "1206ms:visible", "2504ms:visible", "5002ms:visible", "9001ms:visible" ] }, "aggr2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "69ms:absent", "74ms:visible" ], "cdp_samples": [ "310ms:visible", "706ms:visible", "1201ms:visible", "2511ms:visible", "5006ms:visible", "9012ms:visible" ] } }, "brave_155": { "verdicts": { "aggr1": "visible", "aggr2": "visible" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "hidden" }, { "selector": "#procedural-marker", "role": "target", "brave_list_rules": [], "brave": { "standard": { "verdict": "visible", "runs": { "std1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "54ms:absent", "60ms:visible" ], "cdp_samples": [ "309ms:visible", "703ms:visible", "1203ms:visible", "2512ms:visible", "5008ms:visible", "9002ms:visible" ] }, "std2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "60ms:absent", "69ms:visible" ], "cdp_samples": [ "308ms:visible", "714ms:visible", "1203ms:visible", "2501ms:visible", "5011ms:visible", "9013ms:visible" ] } }, "brave_155": { "verdicts": { "std1": "visible", "std2": "visible" }, "agrees_with_154": true } }, "aggressive": { "verdict": "visible", "runs": { "aggr1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "53ms:absent", "58ms:visible" ], "cdp_samples": [ "302ms:visible", "711ms:visible", "1206ms:visible", "2504ms:visible", "5002ms:visible", "9002ms:visible" ] }, "aggr2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "69ms:absent", "74ms:visible" ], "cdp_samples": [ "311ms:visible", "706ms:visible", "1201ms:visible", "2511ms:visible", "5006ms:visible", "9013ms:visible" ] } }, "brave_155": { "verdicts": { "aggr1": "visible", "aggr2": "visible" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "visible" }, { "selector": ".standard-procedural-child", "role": "target", "brave_list_rules": [], "brave": { "standard": { "verdict": "visible", "runs": { "std1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "54ms:absent", "60ms:visible" ], "cdp_samples": [ "310ms:visible", "704ms:visible", "1204ms:visible", "2512ms:visible", "5008ms:visible", "9003ms:visible" ] }, "std2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "60ms:absent", "69ms:visible" ], "cdp_samples": [ "308ms:visible", "714ms:visible", "1204ms:visible", "2502ms:visible", "5011ms:visible", "9013ms:visible" ] } }, "brave_155": { "verdicts": { "std1": "visible", "std2": "visible" }, "agrees_with_154": true } }, "aggressive": { "verdict": "visible", "runs": { "aggr1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "53ms:absent", "58ms:visible" ], "cdp_samples": [ "303ms:visible", "711ms:visible", "1207ms:visible", "2505ms:visible", "5002ms:visible", "9002ms:visible" ] }, "aggr2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "69ms:absent", "74ms:visible" ], "cdp_samples": [ "312ms:visible", "707ms:visible", "1202ms:visible", "2512ms:visible", "5006ms:visible", "9013ms:visible" ] } }, "brave_155": { "verdicts": { "aggr1": "visible", "aggr2": "visible" }, "agrees_with_154": true } } } }, { "selector": "#real-content", "role": "control", "brave_list_rules": [], "brave": { "standard": { "verdict": "visible", "runs": { "std1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "54ms:absent", "60ms:visible" ], "cdp_samples": [ "310ms:visible", "704ms:visible", "1204ms:visible", "2512ms:visible", "5008ms:visible", "9003ms:visible" ] }, "std2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "60ms:absent", "69ms:visible" ], "cdp_samples": [ "309ms:visible", "715ms:visible", "1204ms:visible", "2502ms:visible", "5011ms:visible", "9013ms:visible" ] } }, "brave_155": { "verdicts": { "std1": "visible", "std2": "visible" }, "agrees_with_154": true } }, "aggressive": { "verdict": "visible", "runs": { "aggr1": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "53ms:absent", "58ms:visible" ], "cdp_samples": [ "303ms:visible", "712ms:visible", "1207ms:visible", "2505ms:visible", "5003ms:visible", "9002ms:visible" ] }, "aggr2": { "settled": "visible", "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "69ms:absent", "74ms:visible" ], "cdp_samples": [ "312ms:visible", "707ms:visible", "1202ms:visible", "2512ms:visible", "5007ms:visible", "9014ms:visible" ] } }, "brave_155": { "verdicts": { "aggr1": "visible", "aggr2": "visible" }, "agrees_with_154": true } } }, "fixture_expectation_standard": "visible" } ], "brave_comparison": "no Brave rule; not comparable" }, { "name": "cosmetic-tier-generic-exception", "cell": "T2a", "track": "shipped", "path": "/cosmetic-tier-generic-exception", "note": "Generic hide plus a generic #@# exception. adblock-rust rejects a generic #@# at parse (cosmetic.rs:438, GenericUnhide) in Brave and in our product, so the exception is inert. Known-ad id child and the label \"Ad\" keep the Standard un-hide off.", "brave_comparison": "comparable", "depends_on": [ { "rule": "##.display_ad", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 10961, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": ".display_ad", "role": "target", "brave_list_rules": [ { "rule": "##.display_ad", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 10961, "tier": "un-hideable", "kind": "hide" }, { "rule": "#@#.display_ad", "list": "uBO filters-2021", "source_url": "https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/filters-2021.txt", "line": 1565, "tier": "un-hideable", "kind": "exception (inert)" } ], "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 157, "unhidden_ms": null, "transitions": [ "119ms:absent", "126ms:visible", "157ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 108, "unhidden_ms": null, "transitions": [ "81ms:absent", "87ms:visible", "108ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 171, "unhidden_ms": null, "transitions": [ "133ms:absent", "138ms:visible", "171ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 117, "unhidden_ms": null, "transitions": [ "79ms:absent", "84ms:visible", "117ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-tier-domain-exception-control", "cell": "T2b-control", "track": "shipped", "path": "/cosmetic-tier-domain-exception-control", "note": "Control for cosmetic-tier-domain-exception: the same element on test-adblock.com, where no exception applies. Also runs in the staged pass, whose default-tier list carries the same EasyList rule.", "brave_comparison": "comparable", "depends_on": [ { "rule": "###AdRectangleBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1412, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#AdRectangleBanner", "role": "control", "brave_list_rules": [ { "rule": "###AdRectangleBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1412, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 145, "unhidden_ms": null, "transitions": [ "117ms:absent", "123ms:visible", "145ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 168, "unhidden_ms": null, "transitions": [ "139ms:absent", "147ms:visible", "168ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 149, "unhidden_ms": null, "transitions": [ "100ms:absent", "105ms:visible", "149ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 101, "unhidden_ms": null, "transitions": [ "74ms:absent", "79ms:visible", "101ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-tier-generichide", "cell": "T3", "track": "shipped", "path": "/cosmetic-tier-generichide?via=http://localhost/", "note": "$generichide on the page: EasyList @@://localhost/$generichide (default engine) matches through the ?via=http://localhost/ query. Brave ORs generichide across engines and the class/id path stops for both (cosmetic_filters_js_handler.cc:828-830). Controls: .ad-zone hidden on cosmetic-ad-zone, #AdTopLeader hidden on cosmetic-subtree-known-ad-id.", "brave_comparison": "comparable", "depends_on": [ { "rule": "@@://localhost/$generichide", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 79960, "tier": "un-hideable", "kind": "generichide-exception" }, { "rule": "##.ad-zone", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 475, "tier": "force", "kind": "hide" }, { "rule": "###AdTopLeader", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1421, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": ".ad-zone", "role": "target", "brave_list_rules": [ { "rule": "##.ad-zone", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 475, "tier": "force", "kind": "hide" } ], "fixture_expectation_standard": "visible", "brave": { "standard": { "verdict": "visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "117ms:absent", "122ms:visible" ] }, "std2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "95ms:absent", "100ms:visible" ] } } }, "aggressive": { "verdict": "visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "120ms:absent", "124ms:visible" ] }, "aggr2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "88ms:absent", "93ms:visible" ] } } } }, "control_page": "cosmetic-ad-zone" }, { "selector": "#AdTopLeader", "role": "target", "brave_list_rules": [ { "rule": "###AdTopLeader", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1421, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "visible", "brave": { "standard": { "verdict": "visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "117ms:absent", "122ms:visible" ] }, "std2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "95ms:absent", "100ms:visible" ] } } }, "aggressive": { "verdict": "visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "120ms:absent", "124ms:visible" ] }, "aggr2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "88ms:absent", "93ms:visible" ] } } } }, "control_page": "cosmetic-subtree-known-ad-id" } ] }, { "name": "cosmetic-tier-generichide-split", "cell": "T3b", "track": "shipped", "path": "/cosmetic-tier-generichide-split?via=http://localhost/", "note": "ENG-1063 finding of 2026-10-07: each Brave engine evaluates $generichide itself (adblock-rust engine.rs:388, cosmetic_filter_cache.rs:338-353; OR-ed in ad_block_engine_wrapper.cc:355-357). The default engine's exception clears only its misc generic selectors; the force engine's [id^=\"div-gpt-ad\"]:not(...) survives. The class-keyed selector has only default-engine rules, so it is cleared.", "brave_comparison": "comparable", "depends_on": [ { "rule": "@@://localhost/$generichide", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 79960, "tier": "un-hideable", "kind": "generichide-exception" }, { "rule": "##[id^=\"div-gpt-ad\"]:not([style^=\"width: 1px; height: 1px; position: absolute; left: -10000px; top: -\"]):not([style=\"pointer-events: none; height: 1px; width: 0px; opacity: 0; visibility: hidden; position: fixed; bottom: 0px;\"])", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 1025, "tier": "force", "kind": "hide" }, { "rule": "##[class^=\"div-gpt-ad\"]", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 14195, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#div-gpt-ad-eng2306-t3b", "role": "target", "brave_list_rules": [ { "rule": "##[id^=\"div-gpt-ad\"]", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 14275, "tier": "un-hideable", "kind": "hide" }, { "rule": "##[id^=\"div-gpt-ad\"]:not([style^=\"width: 1px; height: 1px; position: absolute; left: -10000px; top: -\"]):not([style=\"pointer-events: none; height: 1px; width: 0px; opacity: 0; visibility: hidden; position: fixed; bottom: 0px;\"])", "list": "Brave First Party Adblock Filters", "source_url": "https://raw.githubusercontent.com/brave/adblock-lists/master/brave-lists/brave-firstparty.txt", "line": 1025, "tier": "force", "kind": "hide" } ], "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 128, "unhidden_ms": null, "transitions": [ "123ms:absent", "128ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 84, "unhidden_ms": null, "transitions": [ "79ms:absent", "84ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 135, "unhidden_ms": null, "transitions": [ "130ms:absent", "135ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 82, "unhidden_ms": null, "transitions": [ "77ms:absent", "82ms:HIDDEN" ] } } } }, "ours_expected_difference": { "aggressive": "visible: our Aggressive uses a single all-list engine, so the $generichide exception clears every generic selector (ENG-2312; ENG-1063 finding 1). Standard uses the two tier engines and should agree." } }, { "selector": ".div-gpt-ad-eng2306", "role": "contrast", "brave_list_rules": [ { "rule": "##[class^=\"div-gpt-ad\"]", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 14195, "tier": "un-hideable", "kind": "hide" }, { "rule": "##[class^=\"div-gpt-ad\"]:not([style^=\"width: 1px; height: 1px; position: absolute; left: -10000px; top: -\"])", "list": "uBO filters", "source_url": "https://raw.githubusercontent.com/uBlockOrigin/uAssets/master/filters/filters.txt", "line": 9571, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "visible", "brave": { "standard": { "verdict": "visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "123ms:absent", "128ms:visible" ] }, "std2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "79ms:absent", "84ms:visible" ] } } }, "aggressive": { "verdict": "visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "130ms:absent", "135ms:visible" ] }, "aggr2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "77ms:absent", "82ms:visible" ] } } } } } ] }, { "name": "cosmetic-subtree-known-ad-id", "cell": "S2", "track": "shipped", "path": "/cosmetic-subtree-known-ad-id", "note": "Known-ad id: the child id starts div-gpt-ad, which Brave's subtree walk treats as third-party (content_cosmetic.ts:509-515); the label \"Ad\" is not significant text. The child is also force-hidden on its own; the verdict is the parent's.", "brave_comparison": "comparable", "depends_on": [ { "rule": "###AdTopLeader", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1421, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#AdTopLeader", "role": "target", "brave_list_rules": [ { "rule": "###AdTopLeader", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1421, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 159, "unhidden_ms": null, "transitions": [ "120ms:absent", "126ms:visible", "159ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 155, "unhidden_ms": null, "transitions": [ "127ms:absent", "133ms:visible", "155ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 147, "unhidden_ms": null, "transitions": [ "120ms:absent", "126ms:visible", "147ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 100, "unhidden_ms": null, "transitions": [ "74ms:absent", "79ms:visible", "100ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-subtree-known-ad-id-text", "cell": "S2b", "track": "shipped", "path": "/cosmetic-subtree-known-ad-id-text", "note": "Known-ad id beside significant text (>=30 characters, >=5 words). The un-hide condition is isSubTreeFirstParty || showsSignificantText (content_cosmetic.ts:666-677), so the text alone un-hides it in Standard (ENG-2312 item 7).", "brave_comparison": "comparable", "depends_on": [ { "rule": "###AdTopLeader", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1421, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#AdTopLeader", "role": "target", "brave_list_rules": [ { "rule": "###AdTopLeader", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1421, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "hidden-then-visible", "brave": { "standard": { "verdict": "hidden-then-visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 151, "unhidden_ms": 696, "transitions": [ "112ms:absent", "119ms:visible", "151ms:HIDDEN", "696ms:visible" ] }, "std2": { "first_hidden_ms": 116, "unhidden_ms": 706, "transitions": [ "86ms:absent", "94ms:visible", "116ms:HIDDEN", "706ms:visible" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 117, "unhidden_ms": null, "transitions": [ "91ms:absent", "96ms:visible", "117ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 116, "unhidden_ms": null, "transitions": [ "90ms:absent", "96ms:visible", "116ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-subtree-style-url", "cell": "S3", "track": "shipped", "path": "/cosmetic-subtree-style-url", "note": "style attribute with url( pointing at this site's own favicon. Brave counts any style containing url( or // as a third-party resource whatever its origin (content_cosmetic.ts:529-533). Label \"Ad\".", "brave_comparison": "comparable", "depends_on": [ { "rule": "###AdvertPanel", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1468, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#AdvertPanel", "role": "target", "brave_list_rules": [ { "rule": "###AdvertPanel", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1468, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 176, "unhidden_ms": null, "transitions": [ "131ms:absent", "138ms:visible", "176ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 113, "unhidden_ms": null, "transitions": [ "85ms:absent", "91ms:visible", "113ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 158, "unhidden_ms": null, "transitions": [ "129ms:absent", "137ms:visible", "158ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 106, "unhidden_ms": null, "transitions": [ "79ms:absent", "84ms:visible", "106ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-subtree-late-insert", "cell": "S4", "track": "shipped", "path": "/cosmetic-subtree-late-insert", "note": "Plain-text banner inserted 2 s after load. Brave's MutationObserver queries new ids (content_cosmetic.ts:262-339); whether the Standard pump then un-hides it (content_cosmetic.ts:702-710) is what the measurement settles.", "brave_comparison": "comparable", "depends_on": [ { "rule": "###AdSkyscraper", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1417, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#AdSkyscraper", "role": "target", "brave_list_rules": [ { "rule": "###AdSkyscraper", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1417, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "hidden-then-visible", "brave": { "standard": { "verdict": "hidden-then-visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 2223, "unhidden_ms": 2228, "transitions": [ "129ms:absent", "2216ms:visible", "2223ms:HIDDEN", "2228ms:visible" ] }, "std2": { "first_hidden_ms": 2179, "unhidden_ms": 2192, "transitions": [ "85ms:absent", "2179ms:HIDDEN", "2192ms:visible" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 2199, "unhidden_ms": null, "transitions": [ "111ms:absent", "2199ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 2163, "unhidden_ms": null, "transitions": [ "83ms:absent", "2163ms:HIDDEN" ] } } } }, "late": true } ] }, { "name": "cosmetic-subtree-in-xorigin-frame", "cell": "S5", "track": "shipped", "path": "/cosmetic-subtree-in-xorigin-frame", "note": "Plain-text banner inside a frame from other.test-adblock.com (cross-origin, same site). Brave gives a frame cross-origin to the top frame the Aggressive policy (cosmetic_filters_js_handler.cc:636-643); whether that keys on origin or site is unconfirmed in source. The frame page (cosmetic-subtree-frame-inner) posts its own read to the top page (frame_reports).", "brave_comparison": "comparable", "depends_on": [ { "rule": "###navAdBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 4590, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#navAdBanner", "role": "target", "brave_list_rules": [ { "rule": "###navAdBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 4590, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 1153, "unhidden_ms": null, "transitions": [ "201ms:visible", "1153ms:hidden" ] }, "std2": { "first_hidden_ms": 1242, "unhidden_ms": null, "transitions": [ "306ms:visible", "1242ms:hidden" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 1135, "unhidden_ms": null, "transitions": [ "195ms:visible", "1135ms:hidden" ] }, "aggr2": { "first_hidden_ms": 1107, "unhidden_ms": null, "transitions": [ "157ms:visible", "1107ms:hidden" ] } } } }, "in_frame": { "frame": "#xorigin-frame", "src": "https://other.test-adblock.com/cosmetic-subtree-frame-inner" } } ] }, { "name": "cosmetic-tier-domain-force", "cell": "T1", "track": "staged", "path": "/cosmetic-tier-domain-force", "note": "Domain-specific hide in the force tier. Brave is measured with the same rule as a custom filter (its additional engine: ad_block_custom_filters_provider.cc:45).", "brave_comparison": "comparable", "staged_rules": { "default_tier": [], "force_tier": [ "test-adblock.com##.eng2306-domain-force" ], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "brave_custom_filters": [ "test-adblock.com##.eng2306-domain-force" ], "selectors": [ { "selector": ".eng2306-domain-force", "role": "target", "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 136, "unhidden_ms": null, "transitions": [ "129ms:absent", "136ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 85, "unhidden_ms": null, "transitions": [ "78ms:absent", "85ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 91, "unhidden_ms": null, "transitions": [ "86ms:absent", "91ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 87, "unhidden_ms": null, "transitions": [ "78ms:absent", "87ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-tier-domain-default", "cell": "T1b", "track": "staged", "path": "/cosmetic-tier-domain-default", "note": "Domain-specific hide in the un-hideable tier. Not measurable in Brave on a hosted page: no shipped list names test-adblock.com and Brave puts custom filters in its force engine.", "brave_comparison": "comparable", "staged_rules": { "default_tier": [ "test-adblock.com##.eng2306-domain-default" ], "force_tier": [], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "selectors": [ { "selector": ".eng2306-domain-default", "role": "target", "fixture_expectation_standard": "hidden-then-visible", "brave": { "standard": { "verdict": "hidden-then-visible", "provenance": "source", "source": "source-derived (brave-core cosmetic_filters_js_handler.cc:791-805 (default-engine hide_selectors, domain-specific included, go through the Standard un-hide) and content_cosmetic.ts:666-677 (plain text: un-hidden); Aggressive :785-790 makes them plain CSS at dcbdb34)" }, "aggressive": { "verdict": "hidden", "provenance": "source", "source": "source-derived (brave-core cosmetic_filters_js_handler.cc:791-805 (default-engine hide_selectors, domain-specific included, go through the Standard un-hide) and content_cosmetic.ts:666-677 (plain text: un-hidden); Aggressive :785-790 makes them plain CSS at dcbdb34)" } } } ] }, { "name": "cosmetic-tier-domain-exception", "cell": "T2b", "track": "staged", "path": "/cosmetic-tier-domain-exception", "host": "sub.test-adblock.com", "note": "A domain-specific #@# from the force engine cancels a default-engine generic id rule: Brave merges both engines' exceptions (cosmetic_filters_js_handler.cc:765-771) and applies them to both engines' class/id selectors (:287-288). Served from sub.test-adblock.com so that its control, on test-adblock.com, is untouched.", "brave_comparison": "comparable", "depends_on": [ { "rule": "###AdRectangleBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1412, "tier": "un-hideable", "kind": "hide" } ], "staged_rules": { "default_tier": [ "###AdRectangleBanner" ], "force_tier": [ "sub.test-adblock.com#@##AdRectangleBanner" ], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "brave_custom_filters": [ "sub.test-adblock.com#@##AdRectangleBanner" ], "selectors": [ { "selector": "#AdRectangleBanner", "role": "target", "brave_list_rules": [ { "rule": "###AdRectangleBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1412, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "visible", "brave": { "standard": { "verdict": "visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "139ms:absent", "146ms:visible" ] }, "std2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "98ms:absent", "104ms:visible" ] } } }, "aggressive": { "verdict": "visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "87ms:absent", "93ms:visible" ] }, "aggr2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "95ms:absent", "100ms:visible" ] } } } }, "control_page": "cosmetic-tier-domain-exception-control" } ] }, { "name": "cosmetic-tier-has-default", "cell": "T4", "track": "staged", "path": "/cosmetic-tier-has-default", "note": "Primary-engine :has(). Not measurable in Brave on a hosted page (no shipped generic :has(, 0 of 1,659).", "brave_comparison": "comparable", "staged_rules": { "default_tier": [ "test-adblock.com##.eng2306-has:has(> .eng2306-has-child)" ], "force_tier": [], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "selectors": [ { "selector": ".eng2306-has", "role": "target", "fixture_expectation_standard": "visible", "brave": { "standard": { "verdict": "visible", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:210-223 (Standard erases default-engine hide selectors containing :has(); Aggressive keeps them) at dcbdb34)" }, "aggressive": { "verdict": "hidden", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:210-223 (Standard erases default-engine hide selectors containing :has(); Aggressive keeps them) at dcbdb34)" } } } ] }, { "name": "cosmetic-tier-procedural-default", "cell": "T5", "track": "staged", "path": "/cosmetic-tier-procedural-default", "note": "Primary-engine :has-text() and :upward(). Not measurable in Brave on a hosted page (no shipped generic :has-text( or :upward().", "brave_comparison": "comparable", "staged_rules": { "default_tier": [ "test-adblock.com##.eng2306-hastext:has-text(Primary procedural marker)", "test-adblock.com##.eng2306-up-child:upward(.eng2306-up)" ], "force_tier": [], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "selectors": [ { "selector": ".eng2306-hastext", "role": "target", "fixture_expectation_standard": "visible", "brave": { "standard": { "verdict": "visible", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:271-303 (StripProceduralFilters drops default-engine procedural filters in Standard) at dcbdb34)" }, "aggressive": { "verdict": "hidden", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:271-303 (StripProceduralFilters drops default-engine procedural filters in Standard) at dcbdb34)" } } }, { "selector": ".eng2306-up", "role": "target", "fixture_expectation_standard": "visible", "brave": { "standard": { "verdict": "visible", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:271-303 at dcbdb34)" }, "aggressive": { "verdict": "hidden", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:271-303 at dcbdb34)" } } } ] }, { "name": "cosmetic-tier-procedural-force", "cell": "T6", "track": "staged", "path": "/cosmetic-tier-procedural-force", "note": "Force-engine procedural filter: Brave strips procedural filters from the default engine only (ad_block_engine_wrapper.cc:232-236). Measured in Brave as a custom filter. CosmeticStandardStripTests is re-based on this cell.", "brave_comparison": "comparable", "staged_rules": { "default_tier": [], "force_tier": [ "test-adblock.com##.eng2306-force-proc:has-text(Force procedural marker)" ], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "brave_custom_filters": [ "test-adblock.com##.eng2306-force-proc:has-text(Force procedural marker)" ], "selectors": [ { "selector": ".eng2306-force-proc", "role": "target", "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 152, "unhidden_ms": null, "transitions": [ "125ms:absent", "131ms:visible", "152ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 106, "unhidden_ms": null, "transitions": [ "79ms:absent", "85ms:visible", "106ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 110, "unhidden_ms": null, "transitions": [ "82ms:absent", "87ms:visible", "110ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 111, "unhidden_ms": null, "transitions": [ "85ms:absent", "89ms:visible", "111ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-tier-scriptlet-default", "cell": "T7", "track": "staged", "path": "/cosmetic-tier-scriptlet-default", "note": "Primary-engine scriptlet (set-constant). The page hides #scriptlet-marker when it sees the constant, so the probe reads the scriptlet's effect. Not measurable in Brave on a hosted page (generic ##+js is rejected at parse; no shipped scriptlet names test-adblock.com).", "brave_comparison": "comparable", "staged_rules": { "default_tier": [ "test-adblock.com##+js(set-constant, eng2306PrimaryScriptlet, 1)" ], "force_tier": [], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "selectors": [ { "selector": "#scriptlet-marker", "role": "target", "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:347-353 (both engines' injected_script concatenated) and cosmetic_filters_js_handler.cc:691-709 (injected in both modes, no first-party gate) at dcbdb34)" }, "aggressive": { "verdict": "hidden", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:347-353 (both engines' injected_script concatenated) and cosmetic_filters_js_handler.cc:691-709 (injected in both modes, no first-party gate) at dcbdb34)" } } } ] }, { "name": "cosmetic-tier-scriptlet-force", "cell": "T8", "track": "staged", "path": "/cosmetic-tier-scriptlet-force", "note": "Force-engine scriptlet (set-constant). Measured in Brave as a custom filter, if Brave lets custom filters run scriptlets; if not, the measurement records that and the row stays unmeasured.", "brave_comparison": "comparable", "staged_rules": { "default_tier": [], "force_tier": [ "test-adblock.com##+js(set-constant, eng2306ForceScriptlet, 1)" ], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "brave_custom_filters": [ "test-adblock.com##+js(set-constant, eng2306ForceScriptlet, 1)" ], "selectors": [ { "selector": "#scriptlet-marker", "role": "target", "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 139, "unhidden_ms": null, "transitions": [ "111ms:absent", "139ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 97, "unhidden_ms": null, "transitions": [ "80ms:absent", "97ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 77, "unhidden_ms": null, "transitions": [ "71ms:absent", "77ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 86, "unhidden_ms": null, "transitions": [ "81ms:absent", "86ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-tier-action-force", "cell": "T9", "track": "staged", "path": "/cosmetic-tier-action-force", "note": "Force-tier action filters: :style() on a plain selector becomes a stylesheet (cosmetic_filters_resources.cc:31-32); :remove() runs as an action. Measured in Brave as custom filters.", "brave_comparison": "comparable", "staged_rules": { "default_tier": [], "force_tier": [ "test-adblock.com##.eng2306-style:style(opacity: 0 !important)", "test-adblock.com##.eng2306-remove:remove()" ], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "brave_custom_filters": [ "test-adblock.com##.eng2306-style:style(opacity: 0 !important)", "test-adblock.com##.eng2306-remove:remove()" ], "selectors": [ { "selector": ".eng2306-style", "role": "target", "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": 133, "unhidden_ms": null, "transitions": [ "127ms:absent", "133ms:HIDDEN" ] }, "std2": { "first_hidden_ms": 117, "unhidden_ms": null, "transitions": [ "110ms:absent", "117ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": 110, "unhidden_ms": null, "transitions": [ "105ms:absent", "110ms:HIDDEN" ] }, "aggr2": { "first_hidden_ms": 83, "unhidden_ms": null, "transitions": [ "78ms:absent", "83ms:HIDDEN" ] } } } } }, { "selector": ".eng2306-remove", "role": "target", "fixture_expectation_standard": "removed", "brave": { "standard": { "verdict": "removed", "provenance": "measured", "measured_by": "eng2306", "runs": { "std1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "127ms:absent", "133ms:visible", "172ms:absent" ] }, "std2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "110ms:absent", "117ms:visible", "148ms:absent" ] } } }, "aggressive": { "verdict": "removed", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr1": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "105ms:absent", "110ms:visible", "137ms:absent" ] }, "aggr2": { "first_hidden_ms": null, "unhidden_ms": null, "transitions": [ "78ms:absent", "83ms:visible", "115ms:absent" ] } } } } } ] }, { "name": "cosmetic-tier-action-default", "cell": "T9b", "track": "staged", "path": "/cosmetic-tier-action-default", "note": "Primary-engine action filters. Not measurable in Brave on a hosted page (generic action filters are rejected at parse; none shipped names test-adblock.com).", "brave_comparison": "comparable", "staged_rules": { "default_tier": [ "test-adblock.com##.eng2306-style-default:style(opacity: 0 !important)", "test-adblock.com##.eng2306-remove-default:remove()" ], "force_tier": [], "source": "staged by Adblock.ReleaseTests Tests/CosmeticTierFixturesTests.cs (no shipped list has these rules)" }, "selectors": [ { "selector": ".eng2306-style-default", "role": "target", "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:271-303 (Standard keeps action filters on a single css-selector) and cosmetic_filters_resources.cc:31-32 (:style becomes a stylesheet, outside the un-hide) at dcbdb34)" }, "aggressive": { "verdict": "hidden", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:271-303 (Standard keeps action filters on a single css-selector) and cosmetic_filters_resources.cc:31-32 (:style becomes a stylesheet, outside the un-hide) at dcbdb34)" } } }, { "selector": ".eng2306-remove-default", "role": "target", "fixture_expectation_standard": "removed", "brave": { "standard": { "verdict": "removed", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:271-303; content_cosmetic.ts:819-898 (remove action) at dcbdb34)" }, "aggressive": { "verdict": "removed", "provenance": "source", "source": "source-derived (brave-core ad_block_engine_wrapper.cc:271-303; content_cosmetic.ts:819-898 (remove action) at dcbdb34)" } } } ] }, { "name": "cosmetic-subtree-xorigin-iframe", "cell": "S1", "track": "shipped", "path": "/cosmetic-subtree-xorigin-iframe", "note": "Cross-origin iframe in the subtree: the iframe src is on test-adblock.org (a test-owned second registrable domain), which Brave's subtree walk reads as a third-party resource (content_cosmetic.ts:519-527); label \"Ad\".", "brave_comparison": "comparable", "depends_on": [ { "rule": "###AdBillboard", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1402, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#AdBillboard", "role": "target", "brave_list_rules": [ { "rule": "###AdBillboard", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 1402, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "hidden", "brave": { "standard": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "std2": { "first_hidden_ms": 138, "unhidden_ms": null, "transitions": [ "87ms:absent", "95ms:visible", "138ms:HIDDEN" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr2": { "first_hidden_ms": 122, "unhidden_ms": null, "transitions": [ "92ms:absent", "99ms:visible", "122ms:HIDDEN" ] } } } } } ] }, { "name": "cosmetic-subtree-text-3p-image", "cell": "S6", "track": "shipped", "path": "/cosmetic-subtree-text-3p-image", "note": "Significant text (>=30 characters, >=5 words) beside a third-party image from test-adblock.org. The un-hide condition is an OR (content_cosmetic.ts:666-677), so the text un-hides it in Standard. Pair with cosmetic-id-adbanner-3p (same image, label \"Ad\": hidden).", "brave_comparison": "comparable", "depends_on": [ { "rule": "###navAdBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 4590, "tier": "un-hideable", "kind": "hide" } ], "selectors": [ { "selector": "#navAdBanner", "role": "target", "brave_list_rules": [ { "rule": "###navAdBanner", "list": "EasyList", "source_url": "https://easylist.to/easylist/easylist.txt", "line": 4590, "tier": "un-hideable", "kind": "hide" } ], "fixture_expectation_standard": "hidden-then-visible", "brave": { "standard": { "verdict": "hidden-then-visible", "provenance": "measured", "measured_by": "eng2306", "runs": { "std2": { "first_hidden_ms": 183, "unhidden_ms": 741, "transitions": [ "129ms:absent", "136ms:visible", "183ms:HIDDEN", "741ms:visible" ] } } }, "aggressive": { "verdict": "hidden", "provenance": "measured", "measured_by": "eng2306", "runs": { "aggr2": { "first_hidden_ms": 122, "unhidden_ms": null, "transitions": [ "94ms:absent", "101ms:visible", "122ms:HIDDEN" ] } } } } } ] } ], "eng2306": { "ticket": "https://linear.app/adblock-labs/issue/ENG-2306", "status": "Measured on Brave 155.1.97.56 on 2026-10-08 (brave_eng2306): every hypothesis row was confirmed and is now \"measured\". Rows with provenance \"source\" cannot be measured on a hosted page and carry the brave-core line they come from.", "brave_source": "brave-core dcbdb34da3fd9339b39428b370ed4cc07a18580a (2026-10-03); adblock-rust 0.13.3", "lists_fetched_utc": "2026-10-08", "easylist_version": "202610080038", "tracks": { "shipped": "depends only on rules both catalogs ship; graded by the Blocking shard (Standard) and CosmeticAggressiveFixtures", "staged": "depends on staged_rules, which Adblock.ReleaseTests CosmeticTierFixturesTests stages through FilterManifestOverride (default_tier = first_party_protections list, force_tier = unflagged list); Brave is measured with brave_custom_filters, which Brave loads into its force engine" }, "depends_on": "the shipped rules a page needs, matched verbatim; if one is gone from every shipped list the page reports \"fixture dependency gone\", never a product failure", "not_hosted": { "vetted-search-engine (ENG-1063 finding 2)": "Brave applies it only to a host whose registrable label is a search engine name (cosmetic_filters_js_handler.cc:148-166); we do not stand up such a host. Stated by ENG-2312 (brave-blocking-model.md C14)." }, "second_domain": "test-adblock.org (registered 2026-10-08, Cloudflare): serves fixture-3p.png and cosmetic-subtree-frame-3p for S1, S6 and cosmetic-id-adbanner-3p. Checked with adblock-rust (python-adblock) over the 34 shipped lists on 2026-10-08: no network rule matches those URLs, while the known positives (googletagmanager, google-analytics, test-adblock.org/ads/banner.png) do." }, "brave_eng2306": { "version": "155.1.97.56", "chromium": "155.0.8059.40", "platform": "Windows 11 (VM 1001), --headless=new, fresh profile per run, Adblock.Service absent", "measured_utc": "2026-10-08", "runs": { "std1": { "mode": "standard", "started_utc": "2026-10-08T13:14:11.191Z", "browser": "Chrome/155.0.8059.40" }, "aggr1": { "mode": "aggressive", "started_utc": "2026-10-08T13:20:04.749Z", "browser": "Chrome/155.0.8059.40" }, "std2": { "mode": "standard", "started_utc": "2026-10-08T13:25:55.083Z", "browser": "Chrome/155.0.8059.40" }, "aggr2": { "mode": "aggressive", "started_utc": "2026-10-08T13:32:03.507Z", "browser": "Chrome/155.0.8059.40" } }, "list_warm_ms": 75000, "custom_filters": [ "sub.test-adblock.com#@##AdRectangleBanner", "test-adblock.com##+js(set-constant, eng2306ForceScriptlet, 1)", "test-adblock.com##.eng2306-domain-force", "test-adblock.com##.eng2306-force-proc:has-text(Force procedural marker)", "test-adblock.com##.eng2306-remove:remove()", "test-adblock.com##.eng2306-style:style(opacity: 0 !important)" ], "custom_filters_store": "Local State brave.ad_block.custom_filters (additional engine, every permission: ad_block_custom_filters_provider.cc:38, :95 at dcbdb34); read back after each run", "aggressive_profile": "Default\\Preferences shieldsAds=2, trackers=2, cosmeticFilteringV2=1 at \"*,*\" (ENG-2287 seed-aggressive.js)", "component_versions": [ "adcocjohghhfpidemphmcmlmhnfgikei/1.0.484", "afalakplffnnnlkncjhbmahjfjhmlkal/1.0.1536", "aoojcmojmmcbpfgoecoadbdpnagfchel/1.0.25", "bfpgedeaaibpoidldhjcknekahbikncb/1.0.16885", "cdbbhgbmjhfnhnmgeddbliobbofkgdhe/1.0.20121", "cemdlagocoimleflkfkjoihojfainiho/1.0.178", "dkpggglmbjhgjhachikgmohmecomjndo/1.0.0", "ecajlggcmpeepanklgklbpdoeibmahen/1.0.2513", "ecneelfoifpgnignhipdebhbkgcphmic/1.0.54", "eingdhelnaolbpcdkgddekhifcjfkalf/1.0.2", "gkboaolpopklhgplhaaiboijnklogmbc/1.0.97", "iodkpdagapdfkphljnddpjlldadblomo/1.0.22811", "jmfhneobcdckobmonkfjkbknnjjnegoh/1.0.0", "kihnoaefogbkmblfimmibknnmkllbhlf/1.0.8389", "mfddibmblmbccpadfndgakiopmmhebop/1.0.155", "nlpaeekllejnmhoonlpcefpfnpbajbpe/1.0.582" ], "served_with": "site certificate (issuer WE1) on every page of every run", "probe": "brave-tier-matrix.js: document-start sampler every 20 ms and every animation frame to 9.5 s, CDP reads at 0.3/0.7/1.2/2.5/5/9 s with matched rules, hide1pContent from the isolated world, the page's own reads and frame relay", "note": "adblock-blocking-tests #37 (test-adblock.org, S1, S6, -3p image move) deployed at 13:21Z, between aggr1 and std2: S1 and S6 were measured in std2 and aggr2 only (one run per mode); the second-domain pass adds a second run. Brave auto-updated from 154 to 155 on VM 1001; JP chose to measure on 155, and every ENG-2287 row reproduces (brave_155.agrees_with_154)." } }