{
  "slug": "tor-browser",
  "category": "browsers",
  "name": "Tor Browser",
  "description": "Firefox-based browser that routes traffic through the Tor network to hide the user's IP address and location. Isolates each site and makes users look alike to resist tracking and fingerprinting.",
  "website": "https://www.torproject.org",
  "source": "https://gitlab.torproject.org/tpo/applications/tor-browser",
  "license": null,
  "platforms": [],
  "jurisdiction": {
    "code": "US",
    "name": "United States",
    "eyes": "Five Eyes",
    "eu": false,
    "gdpr": false,
    "cloud_act": "provider"
  },
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "A",
  "score": 93,
  "coverage": 100,
  "summary": "Tor Browser scores 93 out of 100 (grade A) on the browsers criteria. It meets 7 of 8 criteria: open source, no trackers or telemetry, no ads or data sales, independent audit, fingerprinting protection, no calls to big-tech services and timely security updates. It partly meets blocks trackers by default. It is based in the United States: Five Eyes member; subject to the US CLOUD Act.",
  "url": "https://privacyratings.com/browsers/tor-browser/",
  "markdown": "https://privacyratings.com/browsers/tor-browser/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://www.torproject.org/about/history/",
      "note": "MPL-2.0, built on Firefox ESR. Source releases are published at dist.torproject.org. The Tor GitLab now requires sign-in to view files."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://www.torproject.org/about/privacy_policy/",
      "note": "No tracking, telemetry or analytics."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://donate.torproject.org/",
      "note": "Nonprofit funded by donations and grants. No ads."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://www.torproject.org/static/findoc/code_audits/Cure53_audit_jan_2024.pdf",
      "note": "Cure53 audited changes in Tor Browser for desktop and Android, with the full report published."
    },
    "transparency_report": {
      "title": "Transparency report",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "user_notice": {
      "title": "Tells users about requests",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "tls": {
      "title": "TLS configuration",
      "weight": 2,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "security_headers": {
      "title": "Security headers",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "web_standards": {
      "title": "Modern web standards",
      "weight": 1,
      "answer": "n/a",
      "evidence": null,
      "note": "Only applies to hosted services with a website to test."
    },
    "tracker_blocking": {
      "title": "Blocks trackers by default",
      "weight": 3,
      "answer": "partial",
      "evidence": "https://www.torproject.org/",
      "note": "Isolates each site so third-party trackers cannot follow users across sites, but does not block tracker requests."
    },
    "fingerprinting_protection": {
      "title": "Fingerprinting protection",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://support.torproject.org/tor-browser/features/fingerprinting-protections/",
      "note": "Standardizes fingerprinting data by default so users look alike."
    },
    "no_google_services": {
      "title": "No calls to big-tech services",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://www.torproject.org/about/privacy_policy/",
      "note": "No background connections to Google, Microsoft or Apple services. Traffic goes through the Tor network."
    },
    "security_updates": {
      "title": "Timely security updates",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://support.torproject.org/tor-browser/getting-started/updating/",
      "note": "Releases follow Firefox ESR security updates and can install automatically."
    }
  },
  "tests": {
    "ssllabs": null,
    "observatory": null,
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [],
    "tested_at": "2026-10-01T07:00:36.476Z"
  },
  "last_modified": "2026-10-01T07:44:20Z"
}