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.
ntfy.gdfsecurity.com
classified as unknown · 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=unknown, openai=unknown, gemini=first-party. A human reviewed this domain's claims before anything here published.
Anthropic Claude — unknown
The hostname pattern (ntfy.<domain>) is consistent with a self-hosted ntfy server instance that a user or organization configured in the app rather than a tracking, ad, or CDN endpoint, but I do not know who owns gdfsecurity.com, so the classification is ambiguous. Since ntfy is an open-source push-notification client whose server endpoint is user-configurable and this contact appears to serve core functionality rather than an inferable analytics/advertising data flow, I would not call it undisclosed on the evidence given.
OpenAI — unknown
The owner and purpose of ntfy.gdfsecurity.com are not provided, so its role is ambiguous. With no evidence of what data the contact transmits, an undisclosed data flow cannot be established.
Google Gemini — first-party
The contacted domain appears to be a functional backend or self-hosted ntfy server instance used for push notification delivery. Essential operational traffic to a backend server does not inherently imply undisclosed data collection.
Apps measured contacting this domain
| App | Label gap | Donations | Contacts | Seen |
|---|---|---|---|---|
io.heckel.ntfy | — | 4 | 208 | 2026-07-28 → 2026-07-29 |
The corpus grows one report at a time: donate your App Privacy Report — anonymous by design.
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