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          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "None",
          "secure": true,
          "httpOnly": true,
          "session": false,
          "thirdParty": false
        },
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "None",
          "secure": true,
          "httpOnly": true,
          "session": false,
          "thirdParty": false
        },
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "None",
          "secure": true,
          "httpOnly": true,
          "session": false,
          "thirdParty": false
        },
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "Lax",
          "secure": true,
          "httpOnly": false,
          "session": false,
          "thirdParty": false
        },
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "None",
          "secure": true,
          "httpOnly": false,
          "session": false,
          "thirdParty": false
        }
      ],
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        {
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          "entry": {
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            "key": "[redacted]",
            "valueBytes": 13
          }
        },
        {
          "phaseId": 0,
          "op": "added",
          "entry": {
            "area": "localStorage",
            "key": "[redacted]",
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          }
        },
        {
          "phaseId": 0,
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            "area": "localStorage",
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          }
        },
        {
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            "area": "sessionStorage",
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          }
        }
      ],
      "storageFinal": [
        {
          "area": "localStorage",
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        },
        {
          "area": "localStorage",
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        },
        {
          "area": "localStorage",
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        },
        {
          "area": "sessionStorage",
          "key": "[redacted]",
          "valueBytes": 6
        }
      ],
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        {
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        },
        {
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        },
        {
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        {
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        {
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            "maxDistinctTextSamples": 6,
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    },
    "warnings": [
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      "Counts are a lower bound: trackers that load only after interaction or consent are not observed; Service Workers are blocked, and Web Worker or WebSocket traffic may be incomplete. Service labels use a US-biased hand-curated catalog, so regional services may be under-labeled. Cookie and storage figures are an end-of-visit snapshot, with storage keys read from the top frame only.",
      "This scan typed a synthetic test value into 2 form fields (never submitting the form) to test whether typed input is captured and sent to third parties. The value is synthetic and is not stored. Requests the page sent during and after this typing, including any unload beacons, are part of the recorded request log and counts.",
      "Read the site's privacy policy (https://www.facebook.com/privacy/policy) and compared its text against this visit's observed behavior. Policy checks are an automated text match with the matched sentences quoted, not a legal reading."
    ],
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        "header": "confirmed-absent",
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      "locale": "en-US",
      "language": "en-US",
      "timezone": "UTC",
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        "storageKeysRedacted": 8,
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          "blockedByShields": false,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 608,
          "phaseId": 0
        },
        {
          "id": 17,
          "url": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}/{seg}",
          "domain": "static.{label}.fbcdn.net",
          "method": "GET",
          "resourceType": "script",
          "status": 200,
          "thirdParty": true,
          "tracker": null,
          "blockedByShields": false,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 608,
          "phaseId": 0
        },
        {
          "id": 18,
          "url": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}",
          "domain": "static.{label}.fbcdn.net",
          "method": "GET",
          "resourceType": "script",
          "status": 200,
          "thirdParty": true,
          "tracker": null,
          "blockedByShields": false,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 608,
          "phaseId": 0
        },
        {
          "id": 19,
          "url": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}/{seg}",
          "domain": "static.{label}.fbcdn.net",
          "method": "GET",
          "resourceType": "script",
          "status": 200,
          "thirdParty": true,
          "tracker": null,
          "blockedByShields": false,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 769,
          "phaseId": 0
        },
        {
          "id": 20,
          "url": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}",
          "domain": "static.{label}.fbcdn.net",
          "method": "GET",
          "resourceType": "script",
          "status": 200,
          "thirdParty": true,
          "tracker": null,
          "blockedByShields": false,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 769,
          "phaseId": 0
        },
        {
          "id": 21,
          "url": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}/{seg}",
          "domain": "static.{label}.fbcdn.net",
          "method": "GET",
          "resourceType": "script",
          "status": 200,
          "thirdParty": true,
          "tracker": null,
          "blockedByShields": false,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 770,
          "phaseId": 0
        },
        {
          "id": 22,
          "url": "https://www.instagram.com/{seg}/{seg}",
          "domain": "www.instagram.com",
          "method": "GET",
          "resourceType": "xhr",
          "status": 200,
          "thirdParty": true,
          "tracker": null,
          "blockedByShields": false,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 801,
          "phaseId": 0
        },
        {
          "id": 23,
          "url": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}",
          "domain": "static.{label}.fbcdn.net",
          "method": "GET",
          "resourceType": "image",
          "status": 200,
          "thirdParty": true,
          "tracker": null,
          "blockedByShields": false,
          "startedAtMs": 848,
          "phaseId": 0
        },
        {
          "id": 24,
          "url": "https://www.facebook.com/{seg}/{seg}",
          "domain": "www.facebook.com",
          "method": "POST",
          "resourceType": "xhr",
          "status": 200,
          "thirdParty": false,
          "tracker": null,
          "blockedByShields": true,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 1070,
          "phaseId": 0
        },
        {
          "id": 25,
          "url": "https://www.facebook.com/{seg}/{seg}",
          "domain": "www.facebook.com",
          "method": "POST",
          "resourceType": "xhr",
          "status": 200,
          "thirdParty": false,
          "tracker": null,
          "blockedByShields": true,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 1774,
          "phaseId": 1
        },
        {
          "id": 26,
          "url": "https://www.facebook.com/{seg}/{seg}",
          "domain": "www.facebook.com",
          "method": "POST",
          "resourceType": "xhr",
          "status": 200,
          "thirdParty": false,
          "tracker": null,
          "blockedByShields": true,
          "provenance": {
            "initiatorUrl": "https://static.{label}.fbcdn.net/{seg}/{seg}/{seg}/{seg}/{seg}/{seg}",
            "initiatorDomain": "static.{label}.fbcdn.net"
          },
          "startedAtMs": 2773,
          "phaseId": 1
        }
      ],
      "cookieMutations": [
        {
          "phaseId": 0,
          "op": "added",
          "cookie": {
            "name": "[redacted]",
            "domain": ".facebook.com",
            "path": "/",
            "sameSite": "None",
            "secure": true,
            "httpOnly": true,
            "session": false,
            "thirdParty": false
          }
        },
        {
          "phaseId": 0,
          "op": "added",
          "cookie": {
            "name": "[redacted]",
            "domain": ".facebook.com",
            "path": "/",
            "sameSite": "None",
            "secure": true,
            "httpOnly": true,
            "session": false,
            "thirdParty": false
          }
        },
        {
          "phaseId": 0,
          "op": "added",
          "cookie": {
            "name": "[redacted]",
            "domain": ".facebook.com",
            "path": "/",
            "sameSite": "None",
            "secure": true,
            "httpOnly": true,
            "session": false,
            "thirdParty": false
          }
        },
        {
          "phaseId": 0,
          "op": "added",
          "cookie": {
            "name": "[redacted]",
            "domain": ".facebook.com",
            "path": "/",
            "sameSite": "Lax",
            "secure": true,
            "httpOnly": false,
            "session": false,
            "thirdParty": false
          }
        },
        {
          "phaseId": 0,
          "op": "added",
          "cookie": {
            "name": "[redacted]",
            "domain": ".facebook.com",
            "path": "/",
            "sameSite": "None",
            "secure": true,
            "httpOnly": false,
            "session": false,
            "thirdParty": false
          }
        }
      ],
      "cookiesFinal": [
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "None",
          "secure": true,
          "httpOnly": true,
          "session": false,
          "thirdParty": false
        },
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "None",
          "secure": true,
          "httpOnly": true,
          "session": false,
          "thirdParty": false
        },
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "None",
          "secure": true,
          "httpOnly": true,
          "session": false,
          "thirdParty": false
        },
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "Lax",
          "secure": true,
          "httpOnly": false,
          "session": false,
          "thirdParty": false
        },
        {
          "name": "[redacted]",
          "domain": ".facebook.com",
          "path": "/",
          "sameSite": "None",
          "secure": true,
          "httpOnly": false,
          "session": false,
          "thirdParty": false
        }
      ],
      "storageMutations": [
        {
          "phaseId": 0,
          "op": "added",
          "entry": {
            "area": "localStorage",
            "key": "[redacted]",
            "valueBytes": 13
          }
        },
        {
          "phaseId": 0,
          "op": "added",
          "entry": {
            "area": "localStorage",
            "key": "[redacted]",
            "valueBytes": 20
          }
        },
        {
          "phaseId": 0,
          "op": "added",
          "entry": {
            "area": "localStorage",
            "key": "[redacted]",
            "valueBytes": 13
          }
        },
        {
          "phaseId": 0,
          "op": "added",
          "entry": {
            "area": "sessionStorage",
            "key": "[redacted]",
            "valueBytes": 6
          }
        }
      ],
      "storageFinal": [
        {
          "area": "localStorage",
          "key": "[redacted]",
          "valueBytes": 13
        },
        {
          "area": "localStorage",
          "key": "[redacted]",
          "valueBytes": 20
        },
        {
          "area": "localStorage",
          "key": "[redacted]",
          "valueBytes": 13
        },
        {
          "area": "sessionStorage",
          "key": "[redacted]",
          "valueBytes": 6
        }
      ],
      "fingerprintEvents": [
        {
          "api": "canvas.measureText",
          "count": 86,
          "phaseId": 0
        },
        {
          "api": "canvas.getImageData",
          "count": 9,
          "phaseId": 0
        },
        {
          "api": "canvas.toDataURL",
          "count": 2,
          "phaseId": 0
        },
        {
          "api": "webgl.getParameter.UNMASKED_RENDERER_WEBGL",
          "count": 2,
          "phaseId": 0
        },
        {
          "api": "webgl.getParameter.UNMASKED_VENDOR_WEBGL",
          "count": 2,
          "phaseId": 0
        },
        {
          "api": "webgl.readPixels",
          "count": 1,
          "phaseId": 0
        },
        {
          "api": "webgl2.getParameter.UNMASKED_RENDERER_WEBGL",
          "count": 1,
          "phaseId": 0
        },
        {
          "api": "webgl2.getParameter.UNMASKED_VENDOR_WEBGL",
          "count": 1,
          "phaseId": 0
        }
      ],
      "fingerprintDetections": [
        {
          "kind": "canvas-fingerprinting",
          "count": 2,
          "phaseId": 0,
          "heuristic": "openwpm-canvas-v1",
          "evidence": {
            "readApis": [
              "canvas.toDataURL"
            ],
            "maxCanvasWidth": 400,
            "maxCanvasHeight": 200,
            "maxDistinctTextCharacters": 66,
            "maxTextWriteCalls": 10
          }
        },
        {
          "kind": "canvas-font-fingerprinting",
          "count": 1,
          "phaseId": 0,
          "heuristic": "canvas-font-probing-v1",
          "evidence": {
            "measureTextCalls": 86,
            "maxDistinctFonts": 62,
            "maxDistinctTextSamples": 6,
            "maxTextLength": 22
          }
        },
        {
          "kind": "input-monitoring",
          "count": 1,
          "phaseId": 0,
          "heuristic": "input-listener-coverage-v1",
          "evidence": {
            "eventTypes": [
              "change",
              "input",
              "keydown",
              "keypress",
              "keyup",
              "paste"
            ],
            "listenerTargets": [
              "documentElement",
              "other",
              "window"
            ],
            "thirdPartyOrigins": [
              "https://static.{label}.fbcdn.net/"
            ],
            "totalListenerCalls": 21
          }
        },
        {
          "kind": "session-recording",
          "count": 1,
          "phaseId": 0,
          "heuristic": "interaction-listener-coverage-v1",
          "evidence": {
            "eventTypes": [
              "click",
              "input",
              "keydown",
              "keyup",
              "mousedown",
              "mousemove",
              "mouseup",
              "pointerdown",
              "pointermove",
              "pointerup",
              "scroll",
              "selectionchange",
              "touchmove",
              "touchstart",
              "visibilitychange",
              "wheel"
            ],
            "listenerTargets": [
              "document",
              "documentElement",
              "other",
              "window"
            ],
            "thirdPartyOrigins": [
              "https://static.{label}.fbcdn.net/"
            ],
            "totalListenerCalls": 62
          }
        },
        {
          "kind": "webgl-fingerprinting",
          "count": 1,
          "phaseId": 0,
          "heuristic": "webgl-entropy-read-v1",
          "evidence": {
            "readApis": [
              "webgl.readPixels"
            ],
            "parameters": [
              "webgl.getParameter.UNMASKED_RENDERER_WEBGL",
              "webgl.getParameter.UNMASKED_VENDOR_WEBGL",
              "webgl2.getParameter.UNMASKED_RENDERER_WEBGL",
              "webgl2.getParameter.UNMASKED_VENDOR_WEBGL"
            ],
            "getParameterCalls": 34,
            "readPixelsCalls": 1
          }
        }
      ],
      "cnameCloaks": [],
      "pixelEvents": [],
      "privacyPolicy": {
        "url": "https://www.facebook.com/privacy/policy",
        "claims": [],
        "mentionedEntities": [],
        "unmentionedEntities": [],
        "policyTextLength": 399999
      }
    },
    "warnings": [
      "This report is one automated, headless Chromium visit from a fixed en-US / UTC profile, with no scrolling, clicking, or consent interaction. Sites can behave differently for real users, browsers, regions, accounts, or network locations.",
      "Counts are a lower bound: trackers that load only after interaction or consent are not observed; Service Workers are blocked, and Web Worker or WebSocket traffic may be incomplete. Service labels use a US-biased hand-curated catalog, so regional services may be under-labeled. Cookie and storage figures are an end-of-visit snapshot, with storage keys read from the top frame only.",
      "This scan typed a synthetic test value into 2 form fields (never submitting the form) to test whether typed input is captured and sent to third parties. The value is synthetic and is not stored. Requests the page sent during and after this typing, including any unload beacons, are part of the recorded request log and counts.",
      "Read the site's privacy policy (https://www.facebook.com/privacy/policy) and compared its text against this visit's observed behavior. Policy checks are an automated text match with the matched sentences quoted, not a legal reading."
    ],
    "verificationFacts": {
      "gpc": {
        "method": "gpc-header-readback@1",
        "header": "confirmed-present",
        "jsSignal": "confirmed-true",
        "observedOn": "first-party-navigation",
        "phaseId": 0
      },
      "shields": {
        "method": "shields-engine-status@1",
        "engineLoaded": true,
        "applied": false,
        "requestsEvaluated": 23,
        "requestsMatched": 2,
        "requestsActuallyBlocked": 0,
        "phaseId": 0
      }
    }
  },
  "experiment": {
    "kind": "intervention",
    "axis": "gpc",
    "pairId": "pair-fe30976d8dd21f84cda5cdbb4eddd639",
    "order": "BA",
    "verification": {
      "baseline": {
        "axis": "gpc",
        "expected": "gpc:off",
        "observed": "gpc:off",
        "method": "gpc-header-readback@1",
        "outcome": "passed",
        "phaseId": 0
      },
      "variant": {
        "axis": "gpc",
        "expected": "gpc:on",
        "observed": "gpc:on",
        "method": "gpc-header-readback@1",
        "outcome": "passed",
        "phaseId": 0
      }
    },
    "evidence": {
      "pairs": 1,
      "counterbalanced": false,
      "strength": "observed-difference"
    }
  },
  "comparability": {
    "evaluatorVersion": "2",
    "metricRegistryVersion": "2",
    "pairValidity": {
      "eligible": true,
      "reasons": []
    },
    "perMetric": {
      "raw-counts": {
        "eligible": false,
        "reasons": [
          "unknown-dimension:egress.region"
        ]
      },
      "tracker-classification": {
        "eligible": false,
        "reasons": [
          "unknown-dimension:egress.region"
        ]
      },
      "shields-simulation": {
        "eligible": false,
        "reasons": [
          "unknown-dimension:egress.region"
        ]
      },
      "consent-verification": {
        "eligible": false,
        "reasons": [
          "unknown-dimension:egress.region",
          "unknown-dimension:consent-interpreter"
        ]
      },
      "detector-findings": {
        "eligible": false,
        "reasons": [
          "unknown-dimension:egress.region"
        ]
      }
    },
    "interventionVerified": true
  },
  "diff": {
    "families": {
      "raw-counts": {
        "eligible": false,
        "metrics": {
          "totalRequests": {
            "baseline": 26,
            "variant": 26,
            "delta": 0
          },
          "thirdPartyRequests": {
            "baseline": 21,
            "variant": 21,
            "delta": 0
          },
          "thirdPartyDomains": {
            "baseline": 2,
            "variant": 2,
            "delta": 0
          },
          "cookies": {
            "baseline": 5,
            "variant": 5,
            "delta": 0
          },
          "thirdPartyCookies": {
            "baseline": 0,
            "variant": 0,
            "delta": 0
          },
          "storageEntries": {
            "baseline": 4,
            "variant": 4,
            "delta": 0
          }
        }
      },
      "tracker-classification": {
        "eligible": false,
        "metrics": {
          "knownTrackerRequests": {
            "baseline": 0,
            "variant": 0,
            "delta": 0
          }
        },
        "addedTrackerDomains": [],
        "removedTrackerDomains": []
      },
      "shields-simulation": {
        "eligible": false,
        "metrics": {
          "shieldsBlockedRequests": {
            "baseline": 2,
            "variant": 2,
            "delta": 0
          }
        }
      },
      "consent-verification": {
        "eligible": false
      },
      "detector-findings": {
        "eligible": false,
        "addedDetectionKinds": [],
        "removedDetectionKinds": []
      }
    }
  },
  "share": {
    "id": "20260814-d22de049473bd588f0625e3d22992456",
    "path": "/reports/20260814-d22de049473bd588f0625e3d22992456/",
    "jsonPath": "/reports/20260814-d22de049473bd588f0625e3d22992456.json"
  }
}