This page aggregates measured, corroborated evidence: donors' iPhones recorded apps contacting this domain, every claim below was reported by separate accepted donations and published under a human verdict (later rows for an approved app inherit its verdict). A contact is a measurement, not an accusation — it does not show what data was sent.
t-cf.bstatic.com
classified as cdn · 2
What our research panel found AI-drafted · human-reviewed
We ask several independent AI models the same question and publish their answers separately — cross-vendor agreement is evidence against fabrication, and disagreement is worth seeing. 3 of 3 models answered, overall confidence medium — classification split: anthropic=cdn, openai=unknown, gemini=cdn. A human reviewed this domain's claims before anything here published.
Anthropic Claude — cdn
bstatic.com is Booking.com's own static-asset domain, and the 't-cf' host pattern is consistent with a first-party CDN endpoint serving images/static content for the app; I have no independent ownership record beyond the shared branding, so this is an inference from the domain name and app identity. As a first-party asset-delivery contact it implies no data flow beyond the app interactions and device identifiers already declared, so nothing appears undisclosed.
OpenAI — unknown
The provided information does not identify the owner or function of t-cf.bstatic.com, so its role is ambiguous. The app declares broad collection and sharing categories, and the contact alone does not establish an undeclared data flow.
Google Gemini — cdn
The domain t-cf.bstatic.com is a content delivery network (CDN) domain operated for Booking.com to deliver static media and web assets. Serving first-party static content via a CDN does not indicate undisclosed data tracking or sharing.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
| Booking.com: Hotels & Travel | — | 4 | 8 | 2026-07-28 → 2026-07-29 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
Think something here is wrong?
Evidence and research improve when people push back. Tell us what to re-check — a misattributed domain, an outdated classification, a claim about your own app — and a human will review it. Responses can take up to 30 days.