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

www.webmd.com

Requested addresshttps://www.webmd.com/

Jul 21, 2026, 8:45 PM UTC

complete; derived from status and warnings

Scan report ready for www.webmd.com: 407 recorded request rows.

Comparison Reportv1 schema · facts legacy-derived · descriptive report

Brave-list blocking off/on comparison

Recorded final address https://www.webmd.com/ (opens in a new tab)
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.

Public evidence correction

webmd.com: report corrected

SBL-CORR-2026-003: The X pixel decoder treated any populated sale amount or order quantity as Purchase, including zero. The Purchase label in these reports is unsupported and must not be used as evidence of a purchase. The underlying X pixel requests remain observations. Consult earlier clarification events for input-probe and policy limitations.

Plain-Language Findings

What this visit means

Unfamiliar terms are defined in the glossary
playwright-chromium

Worth checking

Report corrected

The X pixel decoder treated any populated sale amount or order quantity as Purchase, including zero. The Purchase label in these reports is unsupported and must not be used as evidence of a purchase. The underlying X pixel requests remain observations. Consult earlier clarification events for input-probe and policy limitations.

The original observations remain available below. Use them with the public correction; the original findings summary is withheld.

SBL-CORR-2026-003 · https://sitebehavior.org/corrections/v1-accuracy/

Brave Shields Comparison

No blocking → Brave-list blocking delta

No blocking: 14,231msBrave-list blocking: 7,178ms
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.
Requests-313No blocking: 407 · Brave-list blocking: 94
Third-party requests-302No blocking: 382 · Brave-list blocking: 80
Third-party domains-48No blocking: 59 · Brave-list blocking: 11
Cookies-53No blocking: 60 · Brave-list blocking: 7
Third-party cookies-20No blocking: 20 · Brave-list blocking: 0
Storage keys-32No blocking: 35 · Brave-list blocking: 3
Catalog-matched requests-151No blocking: 152 · Brave-list blocking: 1

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.

Largest per-domain request-count changes

*.googlesyndication.comGoogle · advertisingNo blocking: 64 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-64
*.*.doubleclick.netGoogle · advertisingNo blocking: 34 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-34
*.doubleverify.comunlabeled third partyNo blocking: 33 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-33
*.adtrafficquality.googleunlabeled third partyNo blocking: 23 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-23
cdn.doubleverify.comunlabeled third partyNo blocking: 14 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-14
assets.adobedtm.comAdobe · analytics / advertisingNo blocking: 14 · Brave-list blocking: 1Show No blocking requests · Show Brave-list blocking requests-13
*.media.netMedia.net · advertisingNo blocking: 11 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-11
*.contextweb.comunlabeled third partyNo blocking: 10 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-10
cdn.cookielaw.orgunlabeled third partyNo blocking: 11 · Brave-list blocking: 2Show No blocking requests · Show Brave-list blocking requests-9
www.google.comunlabeled third partyNo blocking: 11 · Brave-list blocking: 3Show No blocking requests · Show Brave-list blocking requests-8
www.webmd.comfirst partyNo blocking: 10 · Brave-list blocking: 3Show No blocking requests · Show Brave-list blocking requests-7
id5-sync.comunlabeled third partyNo blocking: 6 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-6
*.pinterest.comPinterest · social / advertising pixelNo blocking: 5 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-5
secure.cdn.fastclick.netunlabeled third partyNo blocking: 4 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-4
www.googletagservices.comunlabeled third partyNo blocking: 4 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-4
*.*.googlesyndication.comGoogle · advertisingNo blocking: 3 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-3
*.*.webmd.comfirst partyNo blocking: 3 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-3
*.dv.techunlabeled third partyNo blocking: 3 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-3
*.eu-1-id5-sync.comunlabeled third partyNo blocking: 3 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-3
*.privacymanager.iounlabeled third partyNo blocking: 3 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-3
ad.doubleclick.netGoogle · advertisingNo blocking: 3 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-3
analytics.google.comGoogle · analytics / tag managementNo blocking: 3 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-3
thrtle.comunlabeled third partyNo blocking: 3 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-3
*.2mdn.netunlabeled third partyNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
*.33across.comunlabeled third partyNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
*.ads.*.amazon-adsystem.comAmazon Ads · advertisingNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
*.amazon-adsystem.comAmazon Ads · advertisingNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
*.crwdcntrl.netLotame · advertising / data managementNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
*.liadm.comunlabeled third partyNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
*.onetrust.comunlabeled third partyNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
*.pinimg.comunlabeled third partyNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
*.yimg.comunlabeled third partyNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
api.id5-sync.comunlabeled third partyNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
media.admob.comunlabeled third partyNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
www.googletagmanager.comGoogle · analytics / tag managementNo blocking: 2 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-2
img.*.wbmdstatic.comunlabeled third partyNo blocking: 63 · Brave-list blocking: 62Show No blocking requests · Show Brave-list blocking requests-1
*.webmd.comfirst partyNo blocking: 2 · Brave-list blocking: 1Show No blocking requests · Show Brave-list blocking requests-1
*.*.amazon-adsystem.comAmazon Ads · advertisingNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
*.ad.*.dotomi.comunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
*.agkn.comunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
*.analytics.rlcdn.comLiveRamp · identity / advertisingNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
*.analytics.yahoo.comunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
*.intentiq.comunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
*.tapad.comunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
*.truste.comunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
analytics.twitter.comX · social / advertising pixelNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
api.rlcdn.comLiveRamp · identity / advertisingNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
cdn.id5-sync.comunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
d15kdpgjg3unno.cloudfront.netunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
dyv1bugovvq1g.cloudfront.netunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
qsearch-a.akamaihd.netunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
sqs.us-east-1.amazonaws.comunlabeled third partyNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
static.ads-twitter.comX · social / advertising pixelNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
t.coX · social / advertising pixelNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1
www.googleadservices.comGoogle · advertisingNo blocking: 1 · Brave-list blocking: 0Show No blocking requests · Show Brave-list blocking requests-1

Domains only with Brave-list blocking

No domain changes observed.

Domains only with No blocking

*.googlesyndication.comGoogle · advertising · Show No blocking requests64
*.*.doubleclick.netGoogle · advertising · Show No blocking requests34
*.doubleverify.comunlabeled · Show No blocking requests33
*.adtrafficquality.googleunlabeled · Show No blocking requests23
cdn.doubleverify.comunlabeled · Show No blocking requests14
*.media.netMedia.net · advertising · Show No blocking requests11
*.contextweb.comunlabeled · Show No blocking requests10
id5-sync.comunlabeled · Show No blocking requests6
*.pinterest.comPinterest · social / advertising pixel · Show No blocking requests5
secure.cdn.fastclick.netunlabeled · Show No blocking requests4
www.googletagservices.comunlabeled · Show No blocking requests4
*.*.googlesyndication.comGoogle · advertising · Show No blocking requests3
*.*.webmd.comunlabeled · Show No blocking requests3
*.dv.techunlabeled · Show No blocking requests3
*.eu-1-id5-sync.comunlabeled · Show No blocking requests3
*.privacymanager.iounlabeled · Show No blocking requests3
ad.doubleclick.netGoogle · advertising · Show No blocking requests3
analytics.google.comGoogle · analytics / tag management · Show No blocking requests3
thrtle.comunlabeled · Show No blocking requests3
*.2mdn.netunlabeled · Show No blocking requests2
*.33across.comunlabeled · Show No blocking requests2
*.ads.*.amazon-adsystem.comAmazon Ads · advertising · Show No blocking requests2
*.amazon-adsystem.comAmazon Ads · advertising · Show No blocking requests2
*.crwdcntrl.netLotame · advertising / data management · Show No blocking requests2
*.liadm.comunlabeled · Show No blocking requests2
*.onetrust.comunlabeled · Show No blocking requests2
*.pinimg.comunlabeled · Show No blocking requests2
*.yimg.comunlabeled · Show No blocking requests2
api.id5-sync.comunlabeled · Show No blocking requests2
media.admob.comunlabeled · Show No blocking requests2
www.googletagmanager.comGoogle · analytics / tag management · Show No blocking requests2
*.*.amazon-adsystem.comAmazon Ads · advertising · Show No blocking requests1
*.ad.*.dotomi.comunlabeled · Show No blocking requests1
*.agkn.comunlabeled · Show No blocking requests1
*.analytics.rlcdn.comLiveRamp · identity / advertising · Show No blocking requests1
*.analytics.yahoo.comunlabeled · Show No blocking requests1
*.intentiq.comunlabeled · Show No blocking requests1
*.tapad.comunlabeled · Show No blocking requests1
*.truste.comunlabeled · Show No blocking requests1
analytics.twitter.comX · social / advertising pixel · Show No blocking requests1
api.rlcdn.comLiveRamp · identity / advertising · Show No blocking requests1
cdn.id5-sync.comunlabeled · Show No blocking requests1
d15kdpgjg3unno.cloudfront.netunlabeled · Show No blocking requests1
dyv1bugovvq1g.cloudfront.netunlabeled · Show No blocking requests1
qsearch-a.akamaihd.netunlabeled · Show No blocking requests1
sqs.us-east-1.amazonaws.comunlabeled · Show No blocking requests1
static.ads-twitter.comX · social / advertising pixel · Show No blocking requests1
t.coX · social / advertising pixel · Show No blocking requests1
www.googleadservices.comGoogle · advertising · Show No blocking requests1

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

_pinterest_ct_ua.*.pinterest.comthird-party
__cf_bm.33across.comthird-party
IDE.doubleclick.netthird-party
__cf_bm.t.cothird-party
TapAd_DID.tapad.comthird-party
TapAd_TS.tapad.comthird-party
__cf_bm.twitter.comthird-party
_ga.webmd.comfirst-party
_gcl_au.webmd.comfirst-party
OptanonConsent.webmd.comfirst-party
usprivacywww.webmd.comfirst-party

Visible storage keys only with Brave-list blocking

No visible storage-key changes to show; privacy-filtered keys are not itemized.

Visible storage keys only with No blocking

No visible storage-key changes to show; privacy-filtered keys are not itemized.

Entities only with Brave-list blocking

No entity changes observed.

Entities only with No blocking

Google7 domains110
Media.net1 domain11
Amazon Ads3 domains5
Pinterest1 domain5
X3 domains3
LiveRamp2 domains2
Lotame1 domain2

Measurement limits

9 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 3 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.webmd.com/{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.
  • Resolved 1 first-party subdomain that is a CNAME alias for a third-party tracker (CNAME cloaking), which request-URL matching alone would miss.

Brave-list blocking visit only

  • Brave Shields block simulation was enabled; matching requests were aborted before loading and are not included in request totals.

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.

Report ID
20260721-c122b76b10ad819ab448237707e0fdb5
Site
www.webmd.com
Latest visit
Schema
v1 schema · facts legacy-derived · descriptive report
Verify recorded provenance

Baseline 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.

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. 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 .