Browser Privacy Ranking 2026: Tor Browser Leads at 9.5 While Chrome and Yandex Rank Lowest
SecurityLab.ru has released its 2026 browser privacy ranking that measures real behavior rather than marketing claims. The evaluation uses six criteria: network activity immediately after installation, cross-site state isolation, resistance to browser fingerprinting, funding model, depth of configurability, and code verifiability together with the fate of content blockers.
Tor Browser 15.0 tops the list with a score of 9.5. It unifies the fingerprint, letterboxes the window, and applies JavaScript protections at multiple security levels while routing traffic through the Tor network. The 15.0 release, based on Firefox ESR 140, removed AI features and added a non-AI DuckDuckGo option.
Mullvad Browser 15.0 follows at 9.0 with the same anti-fingerprinting engine but without the Tor network, offering constant private mode and zero telemetry. LibreWolf 153.0 scores 8.5 by stripping Mozilla telemetry, pre-installing uBlock Origin, and enabling fingerprint resistance by default.
Brave 1.93 receives 7.5 for its Shields system that blocks ads and trackers at the engine level, bypassing Manifest V3 restrictions. However, it ships with P3A telemetry enabled and includes cryptocurrency features that must be disabled manually. Ungoogled Chromium 150.0 scores 7.0 for sending zero requests to Google services yet ships without any built-in ad or tracker blocking.
DuckDuckGo Browser 1.202 earns 6.5 for immediate tracker protection but still allows requests to bat.bing.com under a Microsoft syndication agreement. Safari 26.5 and Firefox 153.0 both score 6.0 out of the box; Firefox can reach 8.5 after about an hour of about:config tuning and container extensions.
Lower scores go to Vivaldi 8.1 (4.5) for its daily unique profile identifier, Microsoft Edge 151.0 (3.0) for extensive Microsoft telemetry and Copilot integration, Google Chrome 151.0 (2.5) for sending every address-bar character to Google and abandoning third-party cookie changes, Opera 134.0 (2.0) for sending visited URLs to sitecheck.opera.com, and Yandex Browser (1.5) for hardware identifiers and deep ecosystem integration.
The report also covers the Local Mess technique disclosed in June 2025 that allowed Meta Pixel and Yandex Metrika scripts to exfiltrate cookies via localhost connections to mobile apps, bypassing all browser isolation mechanisms including incognito mode.
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