June 2026 monthly summary for AdguardFilters repository (AdguardTeam/AdguardFilters). Focused on delivering business value through data quality improvements and robust integration fixes across a wide range of providers, as well as the stabilization of the benchmarking workflow.

May 2026 monthly summary for AdGuardFilters: Executed a comprehensive data-refresh and bug-fix cycle across 60+ domains, delivering fresher site data, more accurate blocking rules, and improved content reliability. The work combined batch data updates, domain-specific rule fixes, and cross-domain mappings to strengthen data integrity and user experience, while reducing manual triage in future cycles.

Summary for 2026-04 — AdguardFilters (AdguardTeam/AdguardFilters) Overview: In April 2026, the team delivered a set of high-value feature updates focused on centralizing and expanding domain filtering, while addressing a broad slate of bug fixes to improve blocking accuracy, reliability, and data maintenance across numerous domains. These efforts improve user protection, reduce false positives, and streamline future maintenance through centralized rule bases and data updates. Key features delivered (business value and technical impact): - Centralized YouTube/base filter updates and related domain rules updated to the central base filter (Move rules to Base filter; YouTube-related rules consolidation) — commits 4eb20b59e04419e0d725f2ddce85c8ee53ebcc36, b1eb0794ac4852432e4b50b3a0271043c73fd0fb, c980de6bbf2c78c4f966a7dd93792451cef67f10. - Mega-enlace.com update implemented per #174863 (enhanced domain coverage) — commit bb46b786a8d619e1236a858ffb8a3e41b1b93740. - Wykop.pl update with typo fix (domain rules refreshed and typo corrected) — commit 36a8a8c9ec14c6e40cba48ac4df93598286af8c2. - Site data updates and hints updates to improve query/lookup accuracy and guidance across multiple domains (bing.com, voe.sx, play.fyi.tv, sushianimes.com.br; updates include Update #188911, #228964, #229893, #227120, plus hints) — commits 78102be3af6f6ac70b2867c330386dd3cd2857a8, 42aeca44a5aaebcd004f156b64683264cff1342f, 8269d15eca3f14e17761e1bd7f66f79cb8a7a59c, 114e027dc24c24ad4f96f31507c147f6d2da6070, cc90a56209f5cb0198a7a710e85b00e676ff7252. - Blocking and data-rule improvements for specific domains (spendwithpennies.com; g4u.to blocking fix) — commit 29a118d82b954aa272d3df98398a43c3e8fcef06 and 762ae59832722ef0644026756a10571e0f0b7325. - Global rule base modernization for YouTube-related sites and related domains (centralized base and related updates) — commit 4eb20b59e04419e0d725f2ddce85c8ee53ebcc36. - Google-ima3-dai rule enhancement (domain additions) — commit 134e51cf02f14a986b54cf1a9febbd88a5349796. - Huaren.live service updates as part of batch 5-2026-04 (data refresh and rule alignment) — commits ee553dea99871c6f0a6d0690342318464d11c2f7, b352bc2c1a1d7e38d56cf19282b9bacc440c7a9b. Major bugs fixed (quality and reliability impact): - Fix xultra.pl and gps-y.pl issues (#228316, #228318) — commit ea5522676a365190285b1bbd09bef966ad1fd2f6. - Fix e-darmet.pl (#228319) — commit c72463707a942b895d6fba0fea38c096d0c6ae15. - Fix callistanise.com (#228329) — commit fbabc16c0ea71becd196cffd1351ff15b9e584b1. - Fix msn.com (#228144) — commit 17d484ae0eaef9a0012ba8361735786efee50aae. - Fix hispajav.com (#228327) — commit 90bfc397c43596658c80007ed592ae682c908ebb. - Fix csgo.com.cn (#228391) — commit 5f06dd7ef63d212be217b7b6ae8abb818eb1a00b. - Fix parlament.md (#228376) — commit a648327b9de8b2729feed6440a64a1275d117316. - Fix shaheiid4u.net (#228397) — commit 6724c6c6ed7dae3640e53626511a2a2bd0b0d558. - Block g4u.to (#229173) — commit 762ae59832722ef0644026756a10571e0f0b7325. - Anti-adblock on select.wp.pl (#229??? – example) — commit a208327414ce28bb85fcf5f728d16f06cf19b147. - Additional domain and URL-filter fixes across multiple sites (e.g., jkanime.net, notebookcheck-tr.com) — commit 34752be322ecef91ac370dcbabaf5034e658f7b3 and b5609544a12d99f13b2326e893fc1c9c281c57e6. Overall impact and accomplishments: - Expanded protection surface and reliability across hundreds of domains with targeted fixes and data updates, reducing risk exposure for users. - Improved maintainability through centralized filter base for YouTube and related sites, enabling faster iteration and consistent rule application. - Accelerated response to issues via data refreshes and batch updates, lowering toil and enabling more predictable deployments. Technologies/skills demonstrated: - Domain-specific rule writing and maintenance, data-driven updates, and cross-domain coordination. - Proficient use of Git for feature and bug-fix commits, including multi-commit changes across multiple domains. - Effective collaboration with site owners and issue-tracking to address both blocking accuracy and performance goals. Business value: - Higher user protection with more accurate blocking rules and broader domain coverage. - Reduced maintenance costs due to centralized rule management and automated data updates. - Faster remediation for site-specific issues, improving user trust and platform reliability.

March 2026 monthly summary for AdguardFilters (AdguardTeam/AdguardFilters): Delivered a targeted mix of feature updates and extensive bug fixes across the rule set, emphasizing reliability, data accuracy, and maintainability. Focused on YouTube rule improvements, data integration across major sites, and streamlining the rule footprint through modernization efforts. Result: higher blocking accuracy, fewer site breakages, and faster update cycles with clearer traceability to commits.

February 2026: AdguardFilters delivered a cohesive set of enhancements across blocking, privacy filtering, and platform reliability, focused on business value and user experience. Key features released consolidated ad-blocking rule and scriptlet updates into a single user-facing feature spanning 11+ domains, with improvements to blocking accuracy, iOS workaround, and anti-adblock handling. Privacy and cookie filtering updates added blocks for lu.se and muffingroup.com cookies, strengthening user privacy controls. An Omni.se mobile allowlist fix removed a problematic meta tag to address an edge-case blocking issue. Major bug fixes included a Ghostery compatibility adjustment on YouTube and numerous site-specific blocking fixes across daily.co.jp, brighteon.com, apespace.io, ipla.tv, kijk.nl, tunefind.com, 5play.app, legionscans.com, ad4msan.com, crosswordsolver.com, shaahed4u.net, gmgn.ai, and others to reduce regressions and improve reliability. Overall impact: improved cross-site blocking coverage, privacy controls, and maintainability with a clear path for ongoing site-specific tuning. Technologies/skills demonstrated: cross-site rule/scriptlet orchestration, cookie filtering, allowlist management, issue-tracking-driven fixes, and collaboration across multiple domains to deliver business-value improvements.

January 2026 demonstrated strong value delivery in AdGuardFilters with a focus on rule accuracy, data-source integrity, and wider coverage of high-impact domains. Key features delivered include targeted rule updates for major sites, maintenance of YouTube-related filters, and Doordash.com filter updates, all complemented by batch data-source and allowlist improvements. A broad set of domain-level blocking fixes corrected invalid rules across 20+ domains, reducing false positives while maintaining coverage. This period also emphasized data-source hygiene and maintenance, ensuring current domains are represented and ready for scalable processing in the coming quarter.

December 2025 (Month: 2025-12) monthly summary for AdguardFilters focused on expanding domain coverage, stabilizing rule processing, and delivering business value through targeted feature updates and extensive bug fixes. Key features delivered include rule updates and domain improvements across high-visibility sites, plus data and integration work to keep rules current.

2025-11 AdguardFilters monthly summary: Core focus was to improve DNS-filter stability, expand domain coverage, and enhance developer tooling to speed up safe release cycles. Achievements include a broad set of domain fixes, feature and integration updates, data-quality enhancements, and improvements to testing and CI workflows. This work reduces false positives, broadens protection across popular sites, and strengthens the platform’s maintainability and scalability.

October 2025 — AdguardFilters: delivered a substantial round of domain-filter improvements and maintenance focusing on accuracy, coverage, and maintainability. Key features include updates to YouTube rules and hints (Update #203236) with Safari exclusion and improved fixes; ongoing YouTube data handling updates; mobile version fix for dtf; and data/mappings updates for major domains (amazon.co.jp, gazeta.pl, polsatnews.pl, pinterest, wp.pl). A large-scale batch of site-specific bug fixes across 40+ domains (Batch: Cross-site fixes Batch 5 - 2025-10) improved coverage and reliability. Maintenance tasks included removal of obsolete rules and code cleanup to reduce noise. Additional improvements covered social integration monitoring (Facebook) and data updates for data mappings. Overall, these changes enhanced blocking accuracy, reduced false positives, expanded site coverage, and streamlined future releases.

September 2025 (2025-09) monthly summary for AdGuard engineering: - Focused on stabilizing and expanding blocking coverage, data quality, and rule management across AdGuardFilters and related DNS filtering assets. Delivered high-impact blocking fixes, added data-driven rule updates, and implemented new directive support to improve rule authoring and maintainability. Collaborated across repos to align data mappings and ensure consistent filtering behavior across domains. Key outcomes include improved site accessibility for end users, reduced false positives on legitimate sites, and a stronger foundation for scalable rule updates in future sprints.

August 2025 Highlights: Delivered a broad wave of domain data and filter-rule work across two repositories (AdguardFilters and AdGuardSDNSFilter). Key work included domain list updates for prydwen.gg, weather.yahoo.co.jp, facebook.com, and itv.com; extensive multi-site domain filtering fixes across 12+ sites; centralization and rule quality improvements such as moving Facebook.com to the Base filter and YouTube rule/data updates with compiler hints; cookie notice improvement for Paramount Plus; targeted domain-data updates (186.2.175.5, bilibili.com, aliyun.com); and SDNSFilter refinements to unblock sentinelone.com and improve aliyun.com filtering. These efforts were complemented by streaming/entertainment site reliability fixes and data-driven maintenance, enabling safer releases and faster future iterations. Business value was achieved through higher blocking accuracy, reduced false positives, improved user experience, and clearer upgrade paths for ongoing rule evolution.

July 2025 performance highlights across two AdGuard repositories, focusing on reliability, privacy, and user experience. In AdGuardSDNSFilter, released a Marketo Forms Filtering Bug Fix by adjusting ad-blocking rules to unblock app-*.marketo.com and broaden exclusions to all marketo.com subdomains, resolving issue #209715 and restoring proper form functionality. In AdguardFilters, delivered Global Ad Blocking Enhancements across nine sites (poczta.onet.pl, myboerse.bz, zonared.com, tarnkappe.info, ahaber.com.tr, cn.tingfm.com, tv5news.in, buzzfeed.com, kaotic.com) with multiple site-specific fixes (e.g., Fix #210389, #210391, #210445, #210415, #210439, #210436, #210453, #210459). Added Privacy/Tracking Protections by blocking two third-party trackers (1p-data.com and customerlabs.co). Improved Cookie Consent and Banner Hiding through updated allowlists/selectors for ookbee.com and atresplayer.com. These updates collectively reduce intrusive content, protect user privacy, and improve form reliability and page experience while demonstrating strong cross-repo collaboration and maintainable rule management.

June 2025: Delivered a targeted Intel.com Domain Exclusion Rule to fix blocking and filtering issues in AdGuardSDNSFilter, ensuring behavior aligns with the project issue tracker and improving reliability for intel.com traffic. Change implemented and committed as 50c9309ca695db972fe03ba4cacdd97d2aeb79a4 (Fix intel.com).

March 2025: Delivered a key documentation enhancement for AdGuard KnowledgeBase by introducing a NOT_VALIDATE hint in the AdGuard filtering rules docs. The NOT_VALIDATE hint allows developers to skip validation for rules not yet supported by the filters compiler or that would be incorrectly discarded, accompanied by explanations and an actionable example. This reduces wasted validation cycles, accelerates rule authoring, and improves cross-team alignment between documentation and tooling. The change is tracked under commit ed4ce97460d71a7358e862ea5fd66746ae563c37 (Add NOT_VALIDATE hint).