{
  "schema_version": "1.1",
  "id": "safari-blocks-third-party-cookies-by-default-since-2020",
  "slug": "safari-blocks-third-party-cookies-by-default-since-2020",
  "url": "https://groundedkit.com/claims/safari-blocks-third-party-cookies-by-default-since-2020/",
  "api_url": "https://groundedkit.com/api/claims/safari-blocks-third-party-cookies-by-default-since-2020.json",
  "claim": "Safari has blocked all third-party cookies by default since March 2020",
  "commonly_cited_as": "\"Third-party cookies are already dead on Safari\"",
  "verdict": "verified",
  "verdict_definition": "Primary source found; it says the same thing, the scope matches, and it is reasonably current.",
  "confidence": "high",
  "rating": {
    "value": 5,
    "best": 5,
    "worst": 1
  },
  "origin": {
    "publisher": "WebKit (Apple)",
    "title": "Full Third-Party Cookie Blocking and More (Mar. 2020)",
    "year": "2020"
  },
  "quote": "Full Third-Party Cookie Blocking Cookies for cross-site resources are now blocked by default across the board.",
  "method": "Official WebKit blog announcing Intelligent Tracking Prevention changes in Safari 13.1 and iOS/iPadOS 13.4.",
  "drift": [
    "Chrome kept third-party cookies; 'cookies are dead' applies to Safari and Firefox, not all browsers"
  ],
  "interest": "Apple describing its own browser.",
  "safe_rephrasing": "Safari has blocked third-party cookies by default since Safari 13.1 and iOS 13.4 (March 2020); Chrome, the largest browser, still allows them.",
  "sources": [
    {
      "title": "WebKit — Full Third-Party Cookie Blocking",
      "url": "https://webkit.org/blog/10218/full-third-party-cookie-blocking-and-more/",
      "primary": true
    }
  ],
  "kind": "reference_fact",
  "as_of": "Safari 13.1 / iOS 13.4, March 2020",
  "last_checked": "2026-10-16",
  "stale": false,
  "date_reviewed": "2026-10-16",
  "license": "CC BY 4.0",
  "license_url": "https://creativecommons.org/licenses/by/4.0/"
}