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.
ShareDownloads the No blocking visit's request CSV, source report and correction context in a ZIP. Follows the evidence switcher below.PDF + evidence (opens in a new tab)Downloads a ZIP containing the PDF for every recorded visit, exact source JSON, correction context and file hashes. The scanner renders it on request.
What this actually means
usa.gov recorded 24 fewer third-party requests in the visit configured for Brave-list blocking.
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.
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.
49 requests observed in one controlled visit.
Worth checking
21 requests matched Brave Shields filter lists
21 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.
The hand-curated service catalog separately matched 12 request rows in this visit.Show matched requests
Nothing observed
Lower values observed across comparable metrics in the Brave-list blocking attempt
With the scanner configured to apply Brave's ad-block engine and default Shields filter lists (a simulation in this scanner's browser, not a live Brave-browser visit; application was not verified), this paired visit showed 24 fewer third-party requests and 12 fewer tracking-related service requests.
Services only seen in the unblocked visit: Google and Crazy Egg. The blocking visit's engine directly blocked 3 requests; the remaining difference may include follow-on requests that never started once their sources were blocked. A single paired comparison can also reflect run-to-run variance (ad rotation, caching, experiments), so treat this as an observed difference, not a measured blocking rate.
Signed per-metric differences between the two visits; nothing is summed across metrics.Show matched requests
Context
Requests were dispatched to catalogued service domains
Google and Crazy Egg appeared in the request log.
A catalog match identifies a maintainer-reviewed service/domain mapping; it does not establish why an individual request occurred, what it carried, or whether profiling happened. Functional catalog labels include analytics / tag management and session replay / behavior analytics. This scan could not identify 6 of the 10 third-party hosts recorded here, so it cannot say who operates them. That is a limit of identity coverage, not evidence about the site. Catalog labels include session-replay or behavior-analytics services: Crazy Egg; the domain match alone does not prove that a recording occurred.
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.
5 cookies total in this report.No third-party cookies observed.
Worth checking
Session-recording signal matched a known vendor
The page registered broad interaction listeners through call chains that included a third-party script, and contacted a known session-replay service.
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.
183 interaction-listener registrations with https://*.digitalgov.gov/, https://siteimproveanalytics.com/ and https://www.googletagmanager.com/ in the registration call chain and known session-replay vendor(s): Crazy Egg
Nothing observed
No fingerprint-like API calls observed
The scan did not observe the instrumented high-entropy browser APIs.
This is an observation layer, not proof that fingerprinting is impossible.
0 API families recorded.
Brave Shields Comparison
No blocking → Brave-list blocking delta
No blocking: 5,505msBrave-list blocking: 4,567ms
Some deltas are not comparable across these two visits and are not shown.
Other detector and causal-path deltas (each visit's own evidence still renders below): v1 never recorded detector versions, so fingerprinting and pixel deltas cannot be proven to come from matching instrumentation.
The Shields-number delta (each visit's own evidence still renders below): The two visits measured different Shields quantities (filter-list matches vs engine-blocked requests), which must never share a delta.
Fingerprinting deltas (each visit's own evidence still renders below): At least one visit did not complete the fingerprint measurement, so no exact cross-visit delta is shown.
Ad-pixel deltas (each visit's own evidence still renders below): At least one visit did not complete the pixel measurement, so no exact cross-visit delta is shown.
Every signed change is Brave-list blocking minus No blocking. A positive or negative direction is descriptive, not a judgment that the result is better or worse.
Cookie and storage count deltas include every observation. Name-level lists show only reviewed names; unreviewed names are not itemized because they can contain identifiers.
Visible cookie names only with Brave-list blocking
No visible cookie-name changes to show; privacy-filtered names are not itemized.
Visible cookie names only with No blocking
_ga.usa.govfirst-party
Storage keys only with Brave-list blocking
No storage key changes observed.
Storage keys only with No blocking
No storage key changes observed.
Entities only with Brave-list blocking
No entity changes observed.
Entities only with No blocking
Google2 domains11
Crazy Egg1 domain1
Measurement limits
6 conditions affect how this evidence reads
This report
Brave-list blocking comparison runs should be collected under matched crawl conditions, and the blocking run is a simulation with Brave's engine and default lists in this scanner's browser, not a live Brave visit. Differences can still reflect timing, experiments, cache state, consent state, or bot detection.
The two visits ran in randomized order; the "No blocking" visit ran first.
Both visits
Each visit in 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 1 form field (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.
Brave-list blocking visit only
Brave Shields block simulation was enabled; matching requests were aborted before loading and are not included in request totals.
How to use this report
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.
2026-07-27T10:18:29.585Z · complete; derived from status and warnings
Retained observations from this visit. Missing measurements do not establish absence of activity.
Request attribution map
Which actor each third-party request is attributed to, from the initiator the browser reported. Attribution, not causation: an initiator may itself have been told what to fetch, and requests with no reported initiator are not distinguished from ones fetched from several. Asterisks mark subdomain labels hidden for privacy.
Attributed requests
0
Not attributable
25
Third-party requests
25
No unique actor could be assigned to 25 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.
25 third-party requests: 0 attributed to a single recorded actor, 25 not attributable.
No retained third-party request has one recorded actor to draw. This is not evidence that no actor was involved: the visit may have reported no actor or several actors for the same request.
By the numbers
Recorded counts and evidence availability from this one visit. The findings above interpret them.
Requests4925 third-party
Matched Shields lists21classification reported by this visit; no engine readback recorded
Third-party domains102 distinct catalogued service entities
Every domain this visit recorded, with its role, request count and catalog match.
Domain
Role
Requests
Catalog match
Resource types
www.google-analytics.com
service
6
Google: analytics / tag management
fetch
www.googletagmanager.com
service
5
Google: analytics / tag management
script
*.crazyegg.com
service
1
Crazy Egg: session replay / behavior analytics
script
www.google.com
third-party
4
No catalog match
fetch
*.*.qualtrics.com
third-party
3
No catalog match
script, xhr
*.digitalgov.gov
third-party
2
No catalog match
script
siteimproveanalytics.com
third-party
1
No catalog match
script
host unavailable
third-party
1
No catalog match
xhr
*.*.siteimproveanalytics.io
third-party
1
No catalog match
image
*.*.*.qualtrics.com
third-party
1
No catalog match
script
www.usa.gov
first-party
24
No catalog match
document, image, stylesheet, script, other, font
Request log
49 recorded requests
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.
Every request row this visit retained, with its time, status, resource type, domain and recorded provenance.
Ref
Time
Status
Type
Domain
Provenance
URL
B:R0001
44ms
200
document
www.usa.gov
Not attributed
https://www.usa.gov/
B:R0002
112ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0003
113ms
200
stylesheet
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0004
113ms
200
stylesheet
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0005
113ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0006
113ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0007
185ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0008
201ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0009
203ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0010
203ms
200
script
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0011
203ms
200
script
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0012
204ms
200
script
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0013
204ms
n/a
script
*.crazyegg.com
Not attributed
https://*.crazyegg.com/…
B:R0014
204ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0015
205ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0016
205ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0017
206ms
200
script
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0018
207ms
200
script
www.googletagmanager.com
Not attributed
https://www.googletagmanager.com/…?id
B:R0019
207ms
200
other
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0020
244ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0021
244ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0022
246ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0023
246ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0024
246ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0025
247ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0026
247ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
B:R0027
296ms
200
script
siteimproveanalytics.com
Not attributed
https://siteimproveanalytics.com/…
B:R0028
304ms
200
xhr
host unavailable
Not attributed
URL unavailable
B:R0029
483ms
200
script
www.googletagmanager.com
Not attributed
https://www.googletagmanager.com/…?id&…
B:R0030
484ms
200
script
www.googletagmanager.com
Not attributed
https://www.googletagmanager.com/…?id&…
B:R0031
484ms
200
script
*.digitalgov.gov
Not attributed
https://*.digitalgov.gov/…?…
B:R0032
541ms
200
image
*.*.siteimproveanalytics.io
Not attributed
https://*.*.siteimproveanalytics.io/…?…
B:R0033
619ms
204
fetch
www.google-analytics.com
Not attributed
https://www.google-analytics.com/…?v&tid&…&cid
B:R0034
627ms
200
script
*.digitalgov.gov
Not attributed
https://*.digitalgov.gov/…
B:R0035
628ms
200
script
www.googletagmanager.com
Not attributed
https://www.googletagmanager.com/…?id
B:R0036
629ms
200
script
www.googletagmanager.com
Not attributed
https://www.googletagmanager.com/…?id&…
B:R0037
742ms
204
fetch
www.google-analytics.com
Not attributed
https://www.google-analytics.com/…?v&tid&…&cid
B:R0038
808ms
200
script
*.*.*.qualtrics.com
Not attributed
https://*.*.*.qualtrics.com/…?…
B:R0039
1,123ms
200
script
*.*.qualtrics.com
Not attributed
https://*.*.qualtrics.com/…?…
B:R0040
1,123ms
200
script
*.*.qualtrics.com
Not attributed
https://*.*.qualtrics.com/…?…
B:R0041
1,414ms
200
xhr
*.*.qualtrics.com
Not attributed
https://*.*.qualtrics.com/…?…
B:R0042
4,776ms
n/a
fetch
www.google-analytics.com
Not attributed
https://www.google-analytics.com/…?v&tid&…&cid
B:R0043
4,777ms
n/a
fetch
www.google-analytics.com
Not attributed
https://www.google-analytics.com/…?v&tid&…&cid
B:R0044
4,778ms
n/a
fetch
www.google-analytics.com
Not attributed
https://www.google-analytics.com/…?v&tid&…&cid
B:R0045
4,778ms
n/a
fetch
www.google-analytics.com
Not attributed
https://www.google-analytics.com/…?v&tid&…&cid
B:R0046
4,779ms
n/a
fetch
www.google.com
Not attributed
https://www.google.com/…?v&tid&…&cid
B:R0047
4,779ms
n/a
fetch
www.google.com
Not attributed
https://www.google.com/…?v&tid&…&cid
B:R0048
4,779ms
n/a
fetch
www.google.com
Not attributed
https://www.google.com/…?v&tid&…&cid
B:R0049
4,780ms
n/a
fetch
www.google.com
Not attributed
https://www.google.com/…?v&tid&…&cid
Brave-list blocking — evidence
2026-07-27T10:18:35.099Z · complete; derived from status and warnings
Retained observations from this visit. Missing measurements do not establish absence of activity.
Request attribution map
Which actor each third-party request is attributed to, from the initiator the browser reported. Attribution, not causation: an initiator may itself have been told what to fetch, and requests with no reported initiator are not distinguished from ones fetched from several. Asterisks mark subdomain labels hidden for privacy.
Attributed requests
0
Not attributable
1
Third-party requests
1
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.
1 third-party requests: 0 attributed to a single recorded actor, 1 not attributable.
No retained third-party request has one recorded actor to draw. This is not evidence that no actor was involved: the visit may have reported no actor or several actors for the same request.
By the numbers
Recorded counts and evidence availability from this one visit. The findings above interpret them.
Requests251 third-party
Blocked by Brave lists3engine blocks reported by this visit; no engine readback recorded
Third-party domains10 distinct catalogued service entities
Every domain this visit recorded, with its role, request count and catalog match.
Domain
Role
Requests
Catalog match
Resource types
host unavailable
third-party
1
No catalog match
xhr
www.usa.gov
first-party
24
No catalog match
document, image, stylesheet, script, other, font
Request log
25 recorded requests
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.
Every request row this visit retained, with its time, status, resource type, domain and recorded provenance.
Ref
Time
Status
Type
Domain
Provenance
URL
V:R0001
43ms
200
document
www.usa.gov
Not attributed
https://www.usa.gov/
V:R0002
108ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0003
109ms
200
stylesheet
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0004
109ms
200
stylesheet
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0005
109ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0006
110ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0007
206ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0008
210ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0009
211ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0010
211ms
200
script
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0011
211ms
200
script
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0012
212ms
200
script
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0013
213ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0014
213ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0015
214ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0016
214ms
200
script
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0017
214ms
200
other
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0018
243ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0019
243ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0020
243ms
200
image
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0021
244ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0022
244ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0023
246ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0024
247ms
200
font
www.usa.gov
Not attributed
https://www.usa.gov/…
V:R0025
313ms
200
xhr
host unavailable
Not attributed
URL unavailable
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.
Exact build and instrument digests were not recorded by this legacy schema.
Variant visit
Started
Run quality
complete; derived from status and warnings
Scanner
playwright-chromium
Browser
149.0.7827.55
Redaction
not recorded by this schema
Provenance
Exact build and instrument digests were not recorded by this legacy schema.
Recorded 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. 16 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 13 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 .
Reports record one automated visit per condition; visits may be incomplete. Results describe these visits, not everything a site can do.