Joyn AT: Privacy & Security Findings

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Permanent Disclosure Ledger

The discipline, demonstrated

On behalf of our research partners, we investigate publicly distributed Android and iOS apps: we decompile them, follow their code and data flows, and trace every connection to the servers it reaches. Hundreds of agents work through each app and join the technical evidence into one picture, which our specialists then review and verify.

387+
Android/iOS apps audited
Every app is decompiled at source-code level, not just scanned from outside.
1.04M+
Smali classes read
The full shipped code we have actually read, not an estimate.
262+
Critical findings recorded
Confirmed findings copied to regulators, not theoretical risks.
970+
Weak points found
Third-party tracking we have provably found inside the binary.
567+
Endpoints investigated
Real servers and countries where data actually flows.
132+
SDK instances mapped
Reusable libraries correlated across the entire corpus.
1 of 387 entries · sorted by elapsed ↓
Showing the report for Joyn AT.
OrganisationNotifiedStatusSevIntel (click to expand)StatutesResolvedDisclosureElapsedReport
Joyn AT
XETRA
2026-06-25
92d ago
Waiting
High
This free TV streaming app runs a location service in the background that continuously checks whether you have entered or left defined geographic zones, a marketing capability with no connection to watching television, and combines that with viewing data sent to two separate US measurement companies at once.
at.zappn v6.6.1. All seven findings re-scored under CVSS v4.0. Braze geofencing, a continuous location foreground service in a TV streaming app, reaches HIGH on the computed score alone, no editorial escalation needed. Pre-consent Firebase init (structurally ahead of the app's own CMP), duplicated US Nielsen+Comscore measurement, a proprietary runtime-JavaScript tracking SDK, and advertising-attribution tracking correct to MEDIUM. Five messages sent across 79 days, four identical automated acknowledgments, zero substantive human reply ever received.
click to expand
GDPR Art. 7GDPR Art. 5(1)(b)GDPR Art. 44-49+1
Yes
Closed
Disclosure
92d 00h 00m 00s
Published
PDF

This ledger is updated in real time as companies respond. Silence is public. Severity is scored primarily by CVSS v4.0, we reserve the right to deviate based on blast radius.