Baseline visit v1 schema · facts legacy-derived · descriptive report
https://www.irs.gov/
Sep 7, 2026, 4:59 AM UTC
complete; derived from status and warnings
Scan report ready for www.irs.gov: 50 recorded request rows.
Comparison Reportv1 schema · facts legacy-derived · descriptive report
Context
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
9 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.
Nothing observed
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 12 fewer third-party requests and 6 fewer tracking-related service requests.
Services only seen in the unblocked visit: Google. The blocking visit's engine directly blocked 2 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.
Context
Google was sent requests during this visit, but the policy text matched none of the names this scan knows that company by.
Policies often disclose vendor categories rather than company names, so an unnamed vendor is a transparency gap worth reviewing, not automatically a violation.
Context
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 3 of the 5 third-party hosts recorded here, so it cannot say who operates them. That is a limit of identity coverage, not evidence about the site.
Context
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.
Nothing observed
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.
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
Broad mouse, touch, click, visibility and keyboard listener coverage was registered during the visit through call chains that included a third-party script.
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.
Nothing observed
The scan did not observe the instrumented high-entropy browser APIs.
This is an observation layer, not proof that fingerprinting is impossible.
Brave Shields Comparison
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.
No domain changes observed.
No visible cookie-name changes to show; privacy-filtered names are not itemized.
No visible storage-key changes to show; privacy-filtered keys are not itemized.
No visible storage-key changes to show; privacy-filtered keys are not itemized.
No entity changes observed.
This report
Both visits
Brave-list blocking visit only
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
2026-09-07T04:59:36.353Z · complete; derived from status and warnings
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.
15 third-party requests: 14 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.50 requests were recorded from 48 ms to 884 ms. Open the request log for exact timing and request details.
| Domain | Role | Requests | Catalog match | Resource types |
|---|---|---|---|---|
| www.googletagmanager.com | service | 4 | Google: analytics / tag management | script |
| www.google-analytics.com | service | 2 | Google: analytics / tag management | fetch |
| *.*.medallia.com | third-party | 4 | No catalog match | script, xhr |
| static.addtoany.com | third-party | 3 | No catalog match | script, document |
| *.digitalgov.gov | third-party | 2 | No catalog match | script |
| www.irs.gov | first-party | 35 | No catalog match | document, stylesheet, script, image, font |
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 | Status | Type | Domain | Provenance | URL |
|---|---|---|---|---|---|---|
B:R0001 | 48ms | 200 | document | www.irs.gov | Not attributed | https://www.irs.gov/ |
B:R0002 | 101ms | 200 | stylesheet | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0003 | 102ms | 200 | stylesheet | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0004 | 102ms | 200 | script | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0005 | 103ms | 200 | script | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0006 | 103ms | 200 | script | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0007 | 103ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0008 | 104ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0009 | 146ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0010 | 147ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0011 | 200ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0012 | 204ms | 200 | script | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0013 | 205ms | 200 | script | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0014 | 206ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0015 | 207ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0016 | 207ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0017 | 208ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0018 | 209ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0019 | 209ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0020 | 210ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0021 | 210ms | 200 | script | static.addtoany.com | initiated by www.irs.gov | https://static.addtoany.com/… |
B:R0022 | 210ms | 200 | stylesheet | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0023 | 212ms | 200 | script | www.googletagmanager.com | initiated by www.irs.gov | https://www.googletagmanager.com/…?id |
B:R0024 | 248ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0025 | 248ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0026 | 250ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0027 | 250ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0028 | 251ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0029 | 251ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0030 | 252ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0031 | 252ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0032 | 252ms | 200 | font | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0033 | 252ms | 200 | font | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0034 | 253ms | 200 | font | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0035 | 255ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0036 | 365ms | 200 | document | static.addtoany.com | initiated by static.addtoany.com | https://static.addtoany.com/… |
B:R0037 | 448ms | 200 | script | static.addtoany.com | initiated by static.addtoany.com | https://static.addtoany.com/… |
B:R0038 | 450ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0039 | 451ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
B:R0040 | 545ms | 200 | script | www.googletagmanager.com | initiated by www.googletagmanager.com | https://www.googletagmanager.com/…?id&… |
B:R0041 | 546ms | 200 | script | *.*.medallia.com | initiated by www.googletagmanager.com | https://*.*.medallia.com/… |
B:R0042 | 546ms | 200 | script | *.digitalgov.gov | initiated by www.googletagmanager.com | https://*.digitalgov.gov/…?… |
B:R0043 | 572ms | 200 | script | *.digitalgov.gov | initiated by *.digitalgov.gov | https://*.digitalgov.gov/… |
B:R0044 | 573ms | 200 | script | www.googletagmanager.com | initiated by *.digitalgov.gov | https://www.googletagmanager.com/…?id |
B:R0045 | 573ms | 200 | script | www.googletagmanager.com | initiated by www.googletagmanager.com | https://www.googletagmanager.com/…?id&… |
B:R0046 | 715ms | 204 | fetch | www.google-analytics.com | initiated by www.googletagmanager.com | https://www.google-analytics.com/…?v&tid&…&cid |
B:R0047 | 795ms | 204 | fetch | www.google-analytics.com | initiated by www.googletagmanager.com | https://www.google-analytics.com/…?v&tid&…&cid |
B:R0048 | 832ms | 200 | script | *.*.medallia.com | initiated by *.*.medallia.com | https://*.*.medallia.com/… |
B:R0049 | 860ms | 200 | xhr | *.*.medallia.com | initiated by *.*.medallia.com | https://*.*.medallia.com/… |
B:R0050 | 884ms | 200 | xhr | *.*.medallia.com | Not attributed | https://*.*.medallia.com/api/… |
2026-09-07T04:59:31.151Z · complete; derived from status and warnings
Retained observations from this visit. Missing measurements do not establish absence of activity.
3 third-party requests: 3 attributed to a single recorded actor, 0 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.36 requests were recorded from 45 ms to 409 ms. Open the request log for exact timing and request details.
| Domain | Role | Requests | Catalog match | Resource types |
|---|---|---|---|---|
| static.addtoany.com | third-party | 3 | No catalog match | script, document |
| www.irs.gov | first-party | 33 | No catalog match | document, stylesheet, script, image, font |
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 | Status | Type | Domain | Provenance | URL |
|---|---|---|---|---|---|---|
V:R0001 | 45ms | 200 | document | www.irs.gov | Not attributed | https://www.irs.gov/ |
V:R0002 | 94ms | 200 | stylesheet | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0003 | 95ms | 200 | stylesheet | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0004 | 95ms | 200 | script | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0005 | 97ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0006 | 97ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0007 | 143ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0008 | 144ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0009 | 146ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0010 | 148ms | 200 | script | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0011 | 149ms | 200 | script | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0012 | 149ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0013 | 151ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0014 | 151ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0015 | 151ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0016 | 152ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0017 | 152ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0018 | 152ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0019 | 153ms | 200 | script | static.addtoany.com | initiated by www.irs.gov | https://static.addtoany.com/… |
V:R0020 | 153ms | 200 | stylesheet | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0021 | 191ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0022 | 192ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0023 | 192ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0024 | 192ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0025 | 193ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0026 | 195ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0027 | 195ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0028 | 196ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0029 | 196ms | 200 | font | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0030 | 196ms | 200 | font | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0031 | 196ms | 200 | font | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0032 | 197ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0033 | 326ms | 200 | document | static.addtoany.com | initiated by static.addtoany.com | https://static.addtoany.com/… |
V:R0034 | 408ms | 200 | script | static.addtoany.com | initiated by static.addtoany.com | https://static.addtoany.com/… |
V:R0035 | 409ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.gov/… |
V:R0036 | 409ms | 200 | image | www.irs.gov | initiated by www.irs.gov | https://www.irs.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
20260907-be6830ae4a7cb2095f237fe773b97ee3Recorded 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 .