{
  "slug": "ghostery",
  "category": "ad-blockers",
  "name": "Ghostery",
  "description": "Browser extension from Ghostery that blocks ads, trackers and cookie pop-ups and shows which trackers each site uses.",
  "website": "https://www.ghostery.com",
  "source": "https://github.com/ghostery/ghostery-extension",
  "license": "GPL-3.0",
  "platforms": [
    "windows",
    "macos",
    "linux",
    "ios"
  ],
  "jurisdiction": {
    "code": "DE",
    "name": "Germany",
    "eyes": "Fourteen Eyes",
    "eu": true,
    "gdpr": true,
    "cloud_act": null
  },
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "C",
  "score": 65,
  "coverage": 100,
  "summary": "Ghostery scores 65 out of 100 (grade C) on the ad and tracker blockers criteria. It meets 3 of 7 criteria: open source, effective by default and custom filters. It partly meets no trackers or telemetry, no ads or data sales and no browsing data collected. It does not meet independent audit. It is based in Germany: Fourteen Eyes member; EU member (GDPR).",
  "url": "https://privacyratings.com/ad-blockers/ghostery/",
  "markdown": "https://privacyratings.com/ad-blockers/ghostery/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://github.com/ghostery/ghostery-extension/blob/main/LICENSE",
      "note": "GPL-3.0."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "partial",
      "evidence": "https://www.ghostery.com/privacy/policy",
      "note": "The extension sends a daily non-personal installation ping by default. No third-party trackers."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "partial",
      "evidence": "https://www.ghostery.com/ghostery-manifesto",
      "note": "Funded by donations plus non-targeted sponsored links and search engine revenue sharing in Ghostery Private Search."
    },
    "independent_audit": {
      "title": "Independent audit",
      "weight": 2,
      "answer": "no",
      "evidence": null,
      "note": "No independent audit is 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."
    },
    "blocks_by_default": {
      "title": "Effective by default",
      "weight": 3,
      "answer": "yes",
      "evidence": "https://www.ghostery.com/ghostery-ad-blocker",
      "note": "Blocks ads, trackers and cookie pop-ups by default, for free."
    },
    "no_data_collection": {
      "title": "No browsing data collected",
      "weight": 3,
      "answer": "partial",
      "evidence": "https://www.ghostery.com/privacy/policy",
      "note": "Filtering happens on the device, but a daily installation ping and anonymous tracker observations for WhoTracks.me are sent by default."
    },
    "custom_filters": {
      "title": "Custom filters",
      "weight": 1,
      "answer": "yes",
      "evidence": "https://github.com/ghostery/ghostery-extension/tree/main/src/background/custom-filters",
      "note": "Supports custom filter rules in the settings."
    }
  },
  "tests": {
    "ssllabs": null,
    "observatory": null,
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [],
    "tested_at": "2026-10-01T10:59:34.769Z"
  },
  "last_modified": "2026-10-01T11:14:42Z"
}