BILLA / REWE (AT) (at.billa.service): 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.
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Showing the report for BILLA / REWE (AT).
OrganisationNotifiedStatusSevIntel (click to expand)StatutesResolvedDisclosureElapsedReport
BILLA / REWE (AT)
Private
2026-06-21
96d ago
Silent
Medium
Austria's largest supermarket chain leaves three separate access keys exposed directly inside its app and starts advertising tracking through Adobe's audience-profiling tool before you have consented. BILLA's privacy team did reply with a genuine, named acknowledgment and promised to look into it in detail, then went quiet for three months.
at.billa.service. All findings re-scored under CVSS v4.0, correcting to MEDIUM. Three hardcoded Google API keys (Firebase, Maps, Places), Adobe Audience Manager on grocery purchase data, no certificate pinning, and FirebaseInitProvider pre-consent init (found on a 2 September re-verification pass) all present. A named BILLA contact replied substantively on 2026-06-25 promising a detailed follow-up review, then 91 days of silence followed; the same re-verification pass also corrected an overstated original claim, Crashlytics collection is confirmed disabled by default.
click to expand
GDPR Art. 32GDPR Art. 35GDPR Art. 9+3
Yes
Closed
Disclosure
96d 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.