Site Behavior Lab

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

bumble.com

https://bumble.com/

Sep 7, 2026, 4:45 AM UTC

cut short: the in-page fingerprint observer could not read every frame, so the fingerprinting evidence is incomplete; derived from status and warnings

Evidence quality

This report is built on an incomplete visit

Incomplete evidence: evidence was cut short before completion (the in-page fingerprint observer could not read every frame, so the fingerprinting 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

bumble.com recorded 41 fewer third-party requests in the visit configured for Brave-list blocking.

The visit with no blocking made 114 requests; the visit 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) recorded 41 fewer third-party requests. The blocker directly stopped 2 requests; the remaining difference may include follow-on requests that never started once their sources were blocked, plus run-to-run variance.

5tracking-service entities
41cross-site requests
10third-party cookie records

Plain-Language Findings

What this visit means

Unfamiliar terms are defined in the glossary
playwright-chromium

Worth checking

Bottom line: this visit has review-worthy signals

The scan observed signals a non-expert should not have to decode from raw request tables. Some detector evidence was incomplete; each affected detector card states its own retained or unavailable scope, while completed request, cookie, and storage measurements keep their recorded exactness.

The cards below translate the evidence into plain language. Where a measured distribution exists, severity ranks this visit against percentiles from the report's exact schema, methodology, tracker-catalog, ServiceRole-taxonomy, metric-contract, producer, and Global Privacy Control cohort, with each percentile card naming its metric-specific measured-site denominator (among 98 sites with a successful load across all cohorts; other methodologies, request-capped visits, and post-choice consent visits are excluded from this denominator, while failed or block-page attempts are outside that coverage), a curated set of popular, mostly commercial sites, not a random sample of the web, and otherwise uses fixed reference thresholds. The request log, domain table, and methodology remain below for verification.

114 requests observed in one controlled visit.

Worth checking

37 requests matched Brave Shields filter lists

37 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 30 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 41 fewer third-party requests, 10 fewer third-party cookies and 30 fewer tracking-related service requests.

Services only seen in the unblocked visit: LinkedIn, Google and Pinterest, plus 2 others. 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.

Signed per-metric differences between the two visits; nothing is summed across metrics.Show matched requests

Context

Tracking companies the privacy policy does not appear to name

Taboola 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. Named in the policy: LinkedIn, Google and Pinterest, plus 1 other.

Policy at https://bumble.com/privacy-policy/en; 0 checkable statements matched; 4 of 5 observed tracking companies named in the policy.

Context

Catalogued service domains recorded responses during this visit

LinkedIn, Google and Pinterest, 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 social / advertising pixel, analytics / tag management and advertising. This scan could not identify 1 of the 15 third-party hosts recorded here, so it cannot say who operates it. That is a limit of identity coverage, not evidence about the site.

41 cross-site requests across 15 third-party hosts.At or above the median for third-party domains across the 88 sites measured for this metric. Modest distinct tracking-service entities count.Show third-party requests

Worth checking

Requests were dispatched to catalogued major-platform domains

This visit dispatched requests to catalogued domains for Google, Meta and LinkedIn, plus 1 other.

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

29 requests to these platforms.Show catalog-matched requests

Context

Advertising pixel requests contained event labels

Meta Pixel requests contained event labels during this visit.

Pixel decoding was incomplete for one or more request bodies, so whether other pixel requests carried advanced-matching identifier fields is unknown. Retained labels describe request contents, not verified user actions or successful delivery.

Meta Pixel: PageView (1 request)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

Worth checking

Third-party cookies were present

10 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.

26 cookies total in this report.At or above the 75th-percentile mark for third-party cookies across the 88 sites measured for this metric.

Context

Incomplete evidence: No fingerprint-like API calls observed in retained evidence before collection stopped

The scan did not observe the instrumented high-entropy browser APIs.

This is an observation layer, not proof that fingerprinting is impossible. Evidence collection was cut short, so this covers only what was recorded before the cutoff.

Retained incomplete evidence includes 0 API event records; no exact API-family total is available.

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.

Report ID
20260907-125c10c3a48273556061520e1e553a65
Site
bumble.com
Latest visit
Schema
v1 schema · facts legacy-derived · descriptive report
Verify recorded provenance

Baseline visit

Started
Run quality
cut short: the in-page fingerprint observer could not read every frame, so the fingerprinting evidence is incomplete; 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
Run quality
cut short: the in-page fingerprint observer could not read every frame, so the fingerprinting evidence is incomplete; 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. 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 .