Baseline visit v1 schema · facts legacy-derived · descriptive report

www.cdc.gov

https://www.cdc.gov/

Aug 24, 2026, 6:20 AM UTC

complete; derived from status and warnings

View site history Scan this exact route again

Comparison Reportv1 schema · facts legacy-derived · descriptive report

Brave-list blocking off/on comparison

https://www.cdc.gov/…

SharePDF + evidence

Plain-Language Findings

What this visit means

Unfamiliar terms are defined in the glossary

playwright-chromium

Context

Bottom line: this visit has review-worthy signals

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.

51 requests observed in one controlled visit.

Context

5 requests matched Brave Shields filter lists

5 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 3 request rows in this visit.Show matched requests

Context

This Shields comparison is not conclusive

The two visits ended on different pages (https://www.cdc.gov/{seg} vs https://www.cdc.gov/), so their difference is not a comparison of one page.

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.

1 disqualifying condition named by the report's claim policy.Show matched requests

Context

Privacy policy read; it made no statement this scan can check

None of the statements this scan knows how to check appear in the policy text, so nothing was compared against this visit's evidence (1 of 1 observed tracking company named in the policy). 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.

Policy at https://www.cdc.gov/{seg}/{seg}; 0 checkable statements matched; 1 of 1 observed tracking company named in the policy.

Context

Catalogued service domains recorded responses during this visit

Google 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. This scan could not identify 1 of the 3 third-party hosts recorded here, so it cannot say who operates it. That is a limit of identity coverage, not evidence about the site.

4 cross-site requests across 3 third-party hosts.Modest distinct tracking-service entities count.Show third-party requests

Context

Requests were dispatched to catalogued major-platform domains

This visit dispatched requests to catalogued domains for Google.

The domain matches identify services, not the requests' purpose, payload, or whether any profile linking occurred.

3 requests to these platforms.Show catalog-matched requests

Nothing observed

Google Analytics present, no remarketing signal

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.

Google Analytics host observed; no stats.g.doubleclick.net request.Show catalog-matched requests

Nothing observed

No third-party cookies 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.

11 cookies total in this report.No third-party cookies observed.

Context

Fingerprint-like browser APIs were called

1 high-entropy API call 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: canvas.toDataURL.

1 API family recorded.

Brave Shields Comparison

No blocking and Brave-list blocking: two visits, no comparable metric delta

No blocking: 9,973msBrave-list blocking: 2,968ms

These two visits do not support a side-by-side comparison, so no deltas are shown.

The two visits ended on different pages (https://www.cdc.gov/{seg} vs https://www.cdc.gov/), so their difference is not a comparison of one page.

Each visit's own evidence still stands: use the “Evidence shown” switcher below to inspect either visit's tables, and both visits are in the downloaded JSON.

Measurement limits

7 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 "Brave-list 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.
Read the site's privacy policy (https://www.cdc.gov/{seg}/{seg}) 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.

No blocking visit only

The page did not reach network idle before the scan window ended.

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.

Correction context SHA-256: 1a6acc2ad1147c0255b04d14d2748f411159a9516f818959dd3054be53ed216c

Renderer revision: 3c18992e02534f33c825f7c2e51dd534d3ccab0d

No blocking — evidence

2026-08-24T06:20:26.641Z · 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: 4
Not attributable: 0
Third-party requests: 4

4 third-party requests: 4 attributed to a single recorded actor, 0 not attributable.

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.

Requests514 third-party

Matched Shields lists5classification reported by this visit; no engine readback recorded

Third-party domains31 distinct catalogued service entity

Cookies110 third-party

Storage keys0values omitted

Fingerprint API calls11 API family

GPC signalConfigured offreadback not recorded

Duration10s6:20:26 AM UTC

Request composition & timeline

First-party requests 47

Other third-party requests 1

Catalog-matched third-party requests 3

51 requests were recorded from 49 ms to 5,624 ms. Open the request log for exact timing and request details.

0 ms5,624 ms

Top Third Parties

www.google-analytics.comGoogle: analytics / tag management

www.googletagmanager.comGoogle: analytics / tag management

*.digitalgov.govoperator unidentified

Advertising Pixels

This legacy report did not record pixel evidence; an empty display is not an absence finding.

Cookies

.cdc.gov11

first-party · 9 persistent · 2 session

_ga

10 cookie names hidden because unreviewed names can contain identifiers. Cookie values are never recorded.

Storage

No local or session storage keys observed on the final page.

Browser Behavior Signals

canvas.toDataURL1 call

Methodology

Schema: v1 schema · facts legacy-derived · descriptive report
Run quality: complete; derived from status and warnings
Scanner: playwright-chromium
Playwright: 1.62.1
Browser: 151.0.7922.34
Timezone: UTC
Headless: yes
Viewport: 1440×980
GPC: configured off · readback not recorded
Egress: github-actions-ubuntu
Catalog: Hand-curated service catalog
US-biased · hand-curated-2026.08
146 entries
Brave Shields lists: Brave default ad-block lists
31 lists · fetched 8/15/2026

Automated Chromium scan using Playwright 1.62.1 from github-actions-ubuntu with browser 151.0.7922.34, timezone UTC, locale en-US, the listed viewport, and Brave Shields classification only. Brave-list matching uses each route-evaluated request's initiating document (the parent document for a subframe navigation), under methodology shields-request-context-v2-adblock-rust-0.13.2-request-method-v1-playwright-1.62.1+subject-validity-v2+detector-coverage-v2; main-frame navigations are not blocked or counted as matches, and redirect follow-up URLs that Playwright does not re-route are not independently evaluated. Treat results as reproducible evidence for this scan configuration, not a universal claim about all visitors.

Domain evidence

5 recorded domains

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	2	Google: analytics / tag management	fetch
www.googletagmanager.com	service	1	Google: analytics / tag management	script
*.digitalgov.gov	third-party	1	No catalog match	script
www.cdc.gov	first-party	45	No catalog match	document, stylesheet, script, image, font, fetch
*.cdc.gov	first-party	2	No catalog match	fetch

Request log

51 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`	49ms	301	document	www.cdc.gov	Not attributed	https://www.cdc.gov/
`B:R0002`	91ms	200	document	www.cdc.gov	Not attributed	https://www.cdc.gov/…
`B:R0003`	167ms	200	stylesheet	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0004`	168ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0005`	168ms	200	stylesheet	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0006`	168ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0007`	168ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0008`	169ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0009`	201ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0010`	203ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0011`	206ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0012`	207ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0013`	208ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0014`	208ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0015`	208ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0016`	209ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0017`	209ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0018`	209ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0019`	210ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0020`	210ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0021`	210ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0022`	210ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0023`	212ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0024`	213ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0025`	213ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0026`	213ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0027`	214ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0028`	215ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0029`	215ms	200	stylesheet	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0030`	258ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0031`	259ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0032`	261ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0033`	261ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0034`	261ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0035`	262ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0036`	262ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0037`	262ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0038`	263ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0039`	263ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0040`	263ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0041`	377ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0042`	379ms	200	fetch	*.cdc.gov	initiated by www.cdc.gov	https://*.cdc.gov/…
`B:R0043`	379ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0044`	380ms	200	fetch	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0045`	380ms	200	fetch	*.cdc.gov	initiated by www.cdc.gov	https://*.cdc.gov/…
`B:R0046`	385ms	200	fetch	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0047`	436ms	200	script	*.digitalgov.gov	initiated by www.cdc.gov	https://*.digitalgov.gov/…
`B:R0048`	436ms	200	script	www.googletagmanager.com	initiated by www.cdc.gov	https://www.googletagmanager.com/…?id
`B:R0049`	623ms	204	fetch	www.google-analytics.com	initiated by www.googletagmanager.com	https://www.google-analytics.com/…?v&tid&…&cid
`B:R0050`	632ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`B:R0051`	5,624ms	204	fetch	www.google-analytics.com	initiated by www.googletagmanager.com	https://www.google-analytics.com/…?v&tid&…&cid

Brave-list blocking — evidence

2026-08-24T06:20:23.663Z · complete; derived from status and warnings

Retained observations from this visit. Missing measurements do not establish absence of activity.

Request attribution map

Attributed requests: 1
Not attributable: 0
Third-party requests: 1

1 third-party requests: 1 attributed to a single recorded actor, 0 not attributable.

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.

Requests451 third-party

Blocked by Brave lists3engine blocks reported by this visit; no engine readback recorded

Third-party domains10 distinct catalogued service entities

Cookies90 third-party

Storage keys0values omitted

Fingerprint API calls11 API family

GPC signalConfigured offreadback not recorded

Duration3s6:20:23 AM UTC

Request composition & timeline

First-party requests 44

Other third-party requests 1

Catalog-matched third-party requests 0

45 requests were recorded from 48 ms to 480 ms. Open the request log for exact timing and request details.

0 ms480 ms

Top Third Parties

*.digitalgov.govoperator unidentified

Advertising Pixels

This legacy report did not record pixel evidence; an empty display is not an absence finding.

Cookies

.cdc.gov9

first-party · 7 persistent · 2 session

9 cookie names hidden because unreviewed names can contain identifiers. Cookie values are never recorded.

Storage

No local or session storage keys observed on the final page.

Browser Behavior Signals

canvas.toDataURL1 call

Methodology

Schema: v1 schema · facts legacy-derived · descriptive report
Run quality: complete; derived from status and warnings
Scanner: playwright-chromium
Playwright: 1.62.1
Browser: 151.0.7922.34
Timezone: UTC
Headless: yes
Viewport: 1440×980
GPC: configured off · readback not recorded
Egress: github-actions-ubuntu
Catalog: Hand-curated service catalog
US-biased · hand-curated-2026.08
146 entries
Brave Shields lists: Brave default ad-block lists
31 lists · fetched 8/15/2026

Automated Chromium scan using Playwright 1.62.1 from github-actions-ubuntu with browser 151.0.7922.34, timezone UTC, locale en-US, the listed viewport, and Brave Shields block simulation. Brave-list matching uses each route-evaluated request's initiating document (the parent document for a subframe navigation), under methodology shields-request-context-v2-adblock-rust-0.13.2-request-method-v1-playwright-1.62.1+subject-validity-v2+detector-coverage-v2; main-frame navigations are not blocked or counted as matches, and redirect follow-up URLs that Playwright does not re-route are not independently evaluated. Treat results as reproducible evidence for this scan configuration, not a universal claim about all visitors.

Domain evidence

2 recorded domains

Every domain this visit recorded, with its role, request count and catalog match.
Domain	Role	Requests	Catalog match	Resource types
*.digitalgov.gov	third-party	1	No catalog match	script
www.cdc.gov	first-party	44	No catalog match	document, stylesheet, script, image, font, fetch

Request log

45 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`	48ms	200	document	www.cdc.gov	Not attributed	https://www.cdc.gov/
`V:R0002`	118ms	200	stylesheet	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0003`	119ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0004`	119ms	200	stylesheet	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0005`	119ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0006`	119ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0007`	120ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0008`	174ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0009`	176ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0010`	179ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0011`	182ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0012`	183ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0013`	183ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0014`	183ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0015`	183ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0016`	184ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0017`	184ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0018`	184ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0019`	184ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0020`	185ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0021`	185ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0022`	185ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0023`	186ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0024`	187ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0025`	187ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0026`	187ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0027`	187ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0028`	187ms	200	stylesheet	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0029`	228ms	200	image	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0030`	229ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0031`	229ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0032`	230ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0033`	230ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0034`	231ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0035`	232ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0036`	232ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0037`	232ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0038`	232ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0039`	235ms	200	font	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0040`	325ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0041`	405ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0042`	406ms	200	fetch	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0043`	411ms	200	fetch	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…
`V:R0044`	431ms	200	script	*.digitalgov.gov	initiated by www.cdc.gov	https://*.digitalgov.gov/…
`V:R0045`	480ms	200	script	www.cdc.gov	initiated by www.cdc.gov	https://www.cdc.gov/…

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

Evidence receipt

Open report JSON Open provenance sidecar Printable version Download PDF + evidence Open PDF

Report ID: 20260824-369dd4292d072afdc52ca693c92e1daa
Site: www.cdc.gov
Latest visit: Aug 24, 2026, 6:20 AM UTC
Schema: v1 schema · facts legacy-derived · descriptive report

Verify recorded provenance

Baseline visit

Started: Aug 24, 2026, 6:20 AM UTC
Run quality: complete; derived from status and warnings
Scanner: playwright-chromium
Browser: 151.0.7922.34
Redaction: not recorded by this schema
Provenance: Exact build and instrument digests were not recorded by this legacy schema.

Variant visit

Started: Aug 24, 2026, 6:20 AM UTC
Run quality: complete; derived from status and warnings
Scanner: playwright-chromium
Browser: 151.0.7922.34
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 2026-08-02.

Brave-list blocking off/on comparison

cdc.gov contacted catalogued Google domains during this visit.

What this visit means

Bottom line: this visit has review-worthy signals

5 requests matched Brave Shields filter lists

This Shields comparison is not conclusive

Privacy policy read; it made no statement this scan can check

Catalogued service domains recorded responses during this visit

Requests were dispatched to catalogued major-platform domains

Google Analytics present, no remarketing signal

No third-party cookies observed

Fingerprint-like browser APIs were called

No blocking and Brave-list blocking: two visits, no comparable metric delta

Measurement limits

How to use this report

Request attribution map

Relationships shown in the request attribution map

Request composition & timeline

Domain evidence

Request log

Request attribution map

Relationships shown in the request attribution map

Request composition & timeline

Domain evidence

Request log

Evidence receipt

Baseline visit

Variant visit