Baseline visit v2 schema (r2)
Requested addresshttps://www.facebook.com/
Aug 14, 2026, 7:18 PM UTC
complete; recorded by the scanner
Public corrections ledger · SBL-CORR-2026-001
SBL-CORR-2026-001: The historical input-probe disclosure overstates coverage. Unload-only transmissions were not reliably recorded. Focus and blur handlers could run, and per-field failures were not fully counted. These reports cannot establish absence of input transmission outside their retained observations.
Scan report ready for facebook.com: 26 recorded request rows.
Comparison Reportv2 schema (r2)
Worth checking
The scan observed signals a non-expert should not have to decode from raw request tables.
The cards below translate the evidence into plain language; severity reflects fixed reference thresholds, not measured population percentiles. The request log, domain table, and methodology remain below for verification.
Context
2 requests matched the default filter lists of Brave Shields, the ad and tracker blocker built into the Brave browser, while loading normally.
Computed with Brave's own ad-block engine and default filter lists in classification mode: matched requests were not blocked by the scanner and remain in this report's observed request counts. Matching shows what Shields would target on this visit's traffic; an actual Shields visit blocks these and also prevents their follow-on requests, so this number is neither a measured block count nor the total effect.
Context
The pair did not record the network egress region for both visits, and an unrecorded condition never counts as matching.
The raw request logs of both visits remain below for transparency, but the diff between them supports no claim about what the compared condition changed.
Context
None of the statements this scan knows how to check appear in the policy text, so nothing was compared against this visit's evidence (no catalogued tracking companies observed to check against it). That is a limit of the automated check, not a finding about the site either way.
Statements checked automatically: blanket no-cookie claims, third-party-cookie claims, and combined do-not-sell-or-share claims against advertising-pixel identifier fields. Global Privacy Control claims are never checked against request counts, which cannot show whether selling or sharing stopped.
Context
This scan did not match any third-party domains to the service catalog or another identity source.
No known operator or catalog entity was matched. This scan could not identify 2 of the 2 third-party hosts recorded here, so it cannot say who operates them. That is a limit of identity coverage, not evidence about the site.
Nothing observed
No requests to catalogued Google, Meta, TikTok, X, Microsoft, LinkedIn, or Pinterest domains were observed in this visit.
Major-platform domains were not observed in this single passive visit; interaction-gated requests could still load for real users.
Nothing observed
This visit did not contact Google Analytics.
Neither Google Analytics nor its remarketing sync was observed in this visit.
Nothing observed
The automated visit did not observe third-party cookies.
This does not prove the site never uses cookies; it means this visit did not observe third-party cookies.
Context
Listener coverage that could observe typing-related input events was registered through call chains that included a script served from another registrable domain, whose operator this scan did not establish.
This is a behavioral instrumentation signal from listener registration, stack-attributed script origins, and known-vendor requests: it shows the page was instrumented to observe interaction, not that anything was transmitted. Stack attribution records the script origins present in the bounded registration call chain; a cross-site origin in that chain does not by itself establish that the cross-site script registered the listener, because first-party code can register its own listeners through a helper served from elsewhere. A different registrable domain is also not by itself a different operator: sites commonly serve their own scripts from a separate asset domain, so the card says third party only when the catalog or reviewed ownership attributes an origin to another organization. On scanners that run the active keystroke-capture probe, actual transmission is tested separately (a synthetic value is typed, never real input, and no typed values are collected); treat this card as a review prompt rather than proof.
Worth checking
3 behavioral heuristics matched: Canvas fingerprinting heuristic, Canvas font probing heuristic and WebGL entropy-read heuristic.
These heuristics look for behavior patterns such as canvas readback after drawing, repeated canvas font measurement, WebGL entropy reads, offline audio rendering, or WebRTC peer-connection setup. They are review prompts for this visit, not proof of cross-site identity tracking.
GPC Comparison
Both visits
Read the findings and measurement limits first, then inspect the evidence for each recorded visit. Comparisons include both visits, even where a difference cannot be interpreted.
Keep this PDF with its evidence package: the source JSON, correction context, export receipt and SHA256SUMS. The package preserves source bytes and the correction context at export time. Hashes check file consistency; they do not establish independent measurement accuracy or a signed attestation.
Correction context SHA-256: 8b4dc650c91f9e1a20f651118d74586978963548cecaa5885e2565e2ccc68c32
Renderer revision: f9d6c46e744c60a3485eba3951f0b168b9170941
2026-08-14T19:18:09.644Z · complete; recorded by the scanner
Retained observations from this visit. Missing measurements do not establish absence of activity.
No unique actor could be assigned to 1 of these requests. That includes requests for which the browser reported no usable initiator, and repeated URLs seen with conflicting initiators. This report does not distinguish those causes, so they are counted together rather than drawn.
21 third-party requests: 20 attributed to a single recorded actor, 1 not attributable.
Horizontally scrollable visual map. A text list of every relationship drawn in it follows.
Select a relationship to see its detail and open the rows behind it.
By the numbers
Recorded counts and evidence availability from this one visit. The findings above interpret them.26 requests were recorded from 74 ms to 2,650 ms. Open the request log for exact timing and request details.
Recorded visit structure
Request counts are retained request rows whose start fell in each phase. A phase with no retained rows does not prove that no traffic occurred; some phase traffic can be intentionally excluded from the public request log.
| Phase | Span from run start | Recorded requests | Third-party | Catalog-matched requests | Cookie records | Storage records |
|---|---|---|---|---|---|---|
| Initial page loadP0 · passive-load | 0 to 1,607 ms (1,607 ms) | 24 | 21 | 0 | 5 present | 4 present |
| Active input probeP1 · active-probe | 1,607 to 5,097 ms (3,490 ms) | 2 | 0 | 0 | 0 retained | 0 retained |
| Privacy-policy analysisP2 · policy-analysis | 5,148 to 7,254 ms (2,106 ms) | No retained rows | No retained rows | No retained rows | 0 retained | 0 retained |
Changes are inferred from privacy-filtered snapshots at phase boundaries, not instrumented browser write events. Cookie values are never recorded; storage values are omitted and only byte counts remain.
9 change records hide unreviewed names or keys because they can contain identifiers.
| Domain | Role | Requests | Catalog match | Resource types |
|---|---|---|---|---|
| static.*.fbcdn.net | third-party | 20 | No catalog match | stylesheet, image, font, script |
| www.instagram.com | third-party | 1 | No catalog match | xhr |
| www.facebook.com | first-party | 5 | No catalog match | document, ping, xhr |
In hosts and URLs, * and … mark details hidden for privacy.
Request references name this visit's retained JSON rows in order (B = baseline, V = variant, S = single). R0001 is the first request row.
| Ref | Time | Phase | Status | Type | Domain | Provenance | URL |
|---|---|---|---|---|---|---|---|
B:R0001 | 74ms | P0 | 200 | document | www.facebook.com | Not attributed | https://www.facebook.com/ |
B:R0002 | 256ms | P0 | 200 | stylesheet | static.*.fbcdn.net | initiated by www.facebook.com | https://static.*.fbcdn.net/… |
B:R0003 | 262ms | P0 | 200 | ping | www.facebook.com | initiated by static.*.fbcdn.net | https://www.facebook.com/… |
B:R0004 | 380ms | P0 | 200 | image | static.*.fbcdn.net | initiated by www.facebook.com | https://static.*.fbcdn.net/… |
B:R0005 | 497ms | P0 | 200 | font | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0006 | 498ms | P0 | 200 | font | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0007 | 500ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0008 | 500ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0009 | 501ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0010 | 501ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0011 | 501ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0012 | 503ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0013 | 503ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0014 | 504ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0015 | 504ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0016 | 504ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0017 | 504ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0018 | 504ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0019 | 654ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0020 | 655ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0021 | 655ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
B:R0022 | 687ms | P0 | 200 | xhr | www.instagram.com | initiated by static.*.fbcdn.net | https://www.instagram.com/… |
B:R0023 | 736ms | P0 | 200 | image | static.*.fbcdn.net | Not attributed | https://static.*.fbcdn.net/… |
B:R0024 | 962ms | P0 | 200 | xhr | www.facebook.com | initiated by static.*.fbcdn.net | https://www.facebook.com/… |
B:R0025 | 1,650ms | P1 | 200 | xhr | www.facebook.com | initiated by static.*.fbcdn.net | https://www.facebook.com/… |
B:R0026 | 2,650ms | P1 | 200 | xhr | www.facebook.com | initiated by static.*.fbcdn.net | https://www.facebook.com/… |
2026-08-14T19:18:02.118Z · complete; recorded by the scanner
Retained observations from this visit. Missing measurements do not establish absence of activity.
No unique actor could be assigned to 1 of these requests. That includes requests for which the browser reported no usable initiator, and repeated URLs seen with conflicting initiators. This report does not distinguish those causes, so they are counted together rather than drawn.
21 third-party requests: 20 attributed to a single recorded actor, 1 not attributable.
Horizontally scrollable visual map. A text list of every relationship drawn in it follows.
Select a relationship to see its detail and open the rows behind it.
By the numbers
Recorded counts and evidence availability from this one visit. The findings above interpret them.26 requests were recorded from 63 ms to 2,773 ms. Open the request log for exact timing and request details.
Recorded visit structure
Request counts are retained request rows whose start fell in each phase. A phase with no retained rows does not prove that no traffic occurred; some phase traffic can be intentionally excluded from the public request log.
| Phase | Span from run start | Recorded requests | Third-party | Catalog-matched requests | Cookie records | Storage records |
|---|---|---|---|---|---|---|
| Initial page loadP0 · passive-load | 0 to 1,756 ms (1,756 ms) | 24 | 21 | 0 | 5 present | 4 present |
| Active input probeP1 · active-probe | 1,756 to 5,251 ms (3,495 ms) | 2 | 0 | 0 | 0 retained | 0 retained |
| Privacy-policy analysisP2 · policy-analysis | 5,300 to 7,518 ms (2,218 ms) | No retained rows | No retained rows | No retained rows | 0 retained | 0 retained |
Changes are inferred from privacy-filtered snapshots at phase boundaries, not instrumented browser write events. Cookie values are never recorded; storage values are omitted and only byte counts remain.
9 change records hide unreviewed names or keys because they can contain identifiers.
| Domain | Role | Requests | Catalog match | Resource types |
|---|---|---|---|---|
| static.*.fbcdn.net | third-party | 20 | No catalog match | stylesheet, image, font, script |
| www.instagram.com | third-party | 1 | No catalog match | xhr |
| www.facebook.com | first-party | 5 | No catalog match | document, ping, xhr |
In hosts and URLs, * and … mark details hidden for privacy.
Request references name this visit's retained JSON rows in order (B = baseline, V = variant, S = single). R0001 is the first request row.
| Ref | Time | Phase | Status | Type | Domain | Provenance | URL |
|---|---|---|---|---|---|---|---|
V:R0001 | 63ms | P0 | 200 | document | www.facebook.com | Not attributed | https://www.facebook.com/ |
V:R0002 | 284ms | P0 | 200 | stylesheet | static.*.fbcdn.net | initiated by www.facebook.com | https://static.*.fbcdn.net/… |
V:R0003 | 290ms | P0 | 200 | ping | www.facebook.com | initiated by static.*.fbcdn.net | https://www.facebook.com/… |
V:R0004 | 426ms | P0 | 200 | image | static.*.fbcdn.net | initiated by www.facebook.com | https://static.*.fbcdn.net/… |
V:R0005 | 601ms | P0 | 200 | font | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0006 | 603ms | P0 | 200 | font | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0007 | 606ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0008 | 606ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0009 | 607ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0010 | 607ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0011 | 607ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0012 | 607ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0013 | 607ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0014 | 607ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0015 | 608ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0016 | 608ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0017 | 608ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0018 | 608ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0019 | 769ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0020 | 769ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0021 | 770ms | P0 | 200 | script | static.*.fbcdn.net | initiated by static.*.fbcdn.net | https://static.*.fbcdn.net/… |
V:R0022 | 801ms | P0 | 200 | xhr | www.instagram.com | initiated by static.*.fbcdn.net | https://www.instagram.com/… |
V:R0023 | 848ms | P0 | 200 | image | static.*.fbcdn.net | Not attributed | https://static.*.fbcdn.net/… |
V:R0024 | 1,070ms | P0 | 200 | xhr | www.facebook.com | initiated by static.*.fbcdn.net | https://www.facebook.com/… |
V:R0025 | 1,774ms | P1 | 200 | xhr | www.facebook.com | initiated by static.*.fbcdn.net | https://www.facebook.com/… |
V:R0026 | 2,773ms | P1 | 200 | xhr | www.facebook.com | initiated by static.*.fbcdn.net | https://www.facebook.com/… |
This versioned report is currently retained in the public corpus. Follow the currently retained site history, repeat the same public route when it is available, or request a transparent evidence correction.
Integrity and provenance
20260814-d22de049473bd588f0625e3d22992456shields-request-context-v2-adblock-rust-0.13.2-request-method-v1-playwright-1.62.1+subject-validity-v2+detector-coverage-v2+phase-kernel-v2+boundary-state-v1+consent-r2-v4+resource-budget-v1+proxy-traffic-v1+service-worker-block-v1+detector-accountability-v1+service-role-taxonomy-v1100de91713270067dff4f5ecebeea61d330982c7a5aa33395bae3dd604adedd2e94970de235fc80254de8ed99b94316a252e52aa1c2e748c8fbfc3c093b908f40f52cc524a8999a1022279aca74003ece9720f267bc678430727b7312d43f0acredaction-v4+allowlists-v3:269f631f04090ce582644ee3cf0e5c5b6bb425dc4929bc283607b808bc9322a9+public-string-policy-v3:6c78c05523e1f16c88264d0144af33587bd6dc11e04d337a6af2d58190639266+tldts@7.4.10+node-evidence-policy-v1+r2-http-status-compat-v1shields-request-context-v2-adblock-rust-0.13.2-request-method-v1-playwright-1.62.1+subject-validity-v2+detector-coverage-v2+phase-kernel-v2+boundary-state-v1+consent-r2-v4+resource-budget-v1+proxy-traffic-v1+service-worker-block-v1+detector-accountability-v1+service-role-taxonomy-v1100de91713270067dff4f5ecebeea61d330982c7a5aa33395bae3dd604adedd2e94970de235fc80254de8ed99b94316a252e52aa1c2e748c8fbfc3c093b908f40f52cc524a8999a1022279aca74003ece9720f267bc678430727b7312d43f0acredaction-v4+allowlists-v3:269f631f04090ce582644ee3cf0e5c5b6bb425dc4929bc283607b808bc9322a9+public-string-policy-v3:6c78c05523e1f16c88264d0144af33587bd6dc11e04d337a6af2d58190639266+tldts@7.4.10+node-evidence-policy-v1+r2-http-status-compat-v1Recorded provenance is self-reported measurement metadata, not a cryptographic attestation. The public versioned report JSON contains the retained public evidence; see the methodology for interpretation and retention limits.
This report covers what the scanner measures, not everything a site can do. 17 browser surfaces are not instrumented at all (Every page except the one that was scanned; Anything that only loads after scrolling or interaction; Why a request happened, as a causal chain; and 14 others), 3 capabilities are declined by policy, and 3 are outside what any single visit can see. Their absence from this report is not evidence that they did not occur. Read the published coverage boundary.
Detector accuracy is unmeasured. No calibration study currently publishes a precision or recall for the detectors on this page, so a detector match here is a recorded observation, not a calibrated classification. How detector accuracy is measured.
Approved use boundary: This report is investigative evidence that requires independent corroboration. It is not a standalone legal determination and not the sole exhibit in a legal proceeding. Recorded in this project's release manifest on .