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.
Incomplete evidence: evidence was cut short before completion (the Worker instrumentation could not record every request, so the request evidence is incomplete). Counts for the affected evidence are lower bounds; families that completed carry only their ordinary limits. The evidence receipt states the exact per-visit quality.
What this actually means
medicare.gov's retained request log includes catalogued Google and Microsoft domains.
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. Some activity evidence was also incomplete: request counts are retained lower bounds.
The cards below translate the evidence into plain language. This failed or incomplete evidence is not ranked against corpus percentiles; positive signals remain visible as lower bounds. The request log, domain table, and methodology remain below for verification.
at least 218 retained requests observed in one controlled visit.
Worth checking
at least 58 retained requests matched Brave Shields filter lists
at least 58 retained 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 at least 36 retained request rows in this visit.Show matched requests
Context
This Shields comparison is not conclusive
The "No blocking" visit reported GPC Worker capture loss, so its request evidence is incomplete. and The "Brave-list blocking" visit reported GPC Worker capture loss, so its request evidence is incomplete.
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.
Tracking companies the privacy policy does not appear to name
The Trade Desk, Tealium and Adobe were sent requests during this visit, but the policy text matched none of the names this scan knows those companies by.
Policies often disclose vendor categories rather than company names, so an unnamed vendor is a transparency gap worth reviewing, not automatically a violation. Named in the policy: Google and Microsoft.
Policy at https://www.medicare.gov/privacy-policy; 0 checkable statements matched; 2 of 5 observed tracking companies named in the policy.
Worth checking
Catalogued service domains recorded responses during this visit
Google, The Trade Desk and Microsoft, plus 2 others 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, advertising and advertising / demand-side platform. This scan could not identify 15 of the 29 third-party hosts recorded here, so it cannot say who operates them. That is a limit of identity coverage, not evidence about the site. The role taxonomy assigns these additional services explicitly non-tracking operational, support, security, consent-management, or hosting roles: New Relic.
at least 153 retained cross-site requests across at least 29 retained third-party hosts.Show third-party requests
Context
Requests were dispatched to catalogued major-platform domains
This visit dispatched requests to catalogued domains for Google and Microsoft.
The domain matches identify services, not the requests' purpose, payload, or whether any profile linking occurred.
Incomplete evidence: Google Analytics present, no remarketing signal in retained evidence before collection stopped
Google Analytics was observed, but no DoubleClick remarketing sync appeared in this visit.
Standard analytics collection was observed, without the stats.g.doubleclick.net advertising sync. Evidence collection was cut short, so this covers only what was recorded before the cutoff.
14 third-party cookies showed up during the visit.
The scanner observed cookie metadata whose domain crossed the scanned site's registrable-domain boundary. This report does not retain cookie values or partition keys, so it does not establish whether a cookie was a persistent identifier or could recognize a visitor across sites.
43 cookies total in this report.
Context
Fingerprint-like browser APIs were called
8 high-entropy API calls appeared in the instrumentation log.
These calls can be legitimate (charts, graphics, media), so the count is observational, not a severity score, and it excludes Web and Service Workers. Top calls: webgl.getParameter.UNMASKED_RENDERER_WEBGL, webgl.getParameter.UNMASKED_VENDOR_WEBGL and webgl2.getParameter.UNMASKED_RENDERER_WEBGL.
4 API families recorded.
Raw evidence
Open the interactive evidence explorer
The findings above are built from the stored report. Load the request rows, domains, cookies, storage keys, browser signals, visit phases, charts and CSV export when you want to check them; the versioned report JSON is always available below without this interface.
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.
cut short: the Worker instrumentation could not record every request, so the request evidence is incomplete; 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.
Variant visit
Started
Run quality
cut short: the Worker instrumentation could not record every request, so the request evidence is incomplete; 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. 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. A study has been recorded for pixel-events and does not support a published rate under the current build. 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 .