{
  "slug": "netcraft-extension",
  "category": "browser-extensions",
  "name": "Netcraft Extension",
  "description": "Anti-phishing browser extension from Netcraft that warns about known and suspected phishing sites and malicious JavaScript, and shows basic information about the current site.",
  "website": "https://www.netcraft.com/resources/apps-and-extensions/browser-extension",
  "license": null,
  "platforms": [],
  "jurisdiction": {
    "code": "GB",
    "name": "United Kingdom",
    "eyes": "Five Eyes",
    "eu": false,
    "gdpr": true,
    "cloud_act": "agreement"
  },
  "pick": false,
  "pick_reason": null,
  "disclosure": null,
  "grade": "F",
  "score": 20,
  "coverage": 100,
  "summary": "Netcraft Extension scores 20 out of 100 (grade F) on the browser extensions criteria. It meets 1 of 4 criteria: no ads or data sales. It does not meet open source, no trackers or telemetry and independent audit. It is based in the United Kingdom: Five Eyes member; GDPR-style data protection law; CLOUD Act data access agreement with the US.",
  "url": "https://privacyratings.com/browser-extensions/netcraft-extension/",
  "markdown": "https://privacyratings.com/browser-extensions/netcraft-extension/index.md",
  "answers": {
    "open_source": {
      "title": "Open source",
      "weight": 3,
      "answer": "no",
      "evidence": "https://addons.mozilla.org/en-US/firefox/addon/netcraft-toolbar/license/",
      "note": "Closed source."
    },
    "no_trackers": {
      "title": "No trackers or telemetry",
      "weight": 3,
      "answer": "no",
      "evidence": null,
      "note": "The home page loads HubSpot (automated test)."
    },
    "no_ads": {
      "title": "No ads or data sales",
      "weight": 2,
      "answer": "yes",
      "evidence": "https://addons.mozilla.org/en-US/firefox/addon/netcraft-toolbar/privacy/",
      "note": "No ads in the extension, and Netcraft states it does not sell personal information."
    },
    "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."
    }
  },
  "tests": {
    "ssllabs": null,
    "observatory": null,
    "internetnl_web": null,
    "internetnl_mail": null,
    "trackers": [
      {
        "name": "Google Fonts",
        "host": "fonts.gstatic.com",
        "effect": "none"
      },
      {
        "name": "HubSpot",
        "host": "js-eu1.hs-scripts.com",
        "effect": "no"
      }
    ],
    "tested_at": "2026-10-01T07:00:39.833Z"
  },
  "last_modified": "2026-10-01T07:44:20Z"
}