Marktguru (com.marktguru.android): Privacy & Security Findings

report - rfi-irfos
Skip to content

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 Marktguru.
OrganisationNotifiedStatusSevIntel (click to expand)StatutesResolvedDisclosureElapsedReport
Marktguru
Private
2026-06-25
92d ago
Silent
High
Marktguru, a German shopping-deals app, tracks your location in the background even when the app is closed, routing that location data through Huawei infrastructure that falls under China's national-security law, without telling users or having an approved legal basis for sending it there. When RFI-IRFOS reported this, the company's parent sent a legal cease-and-desist letter calling the findings unfounded without ever identifying which one it actually disputed, and four later attempts to get a specific technical answer went unanswered.
com.marktguru.android v2026.06.739. All six findings re-scored under CVSS v4.0. ACCESS_BACKGROUND_LOCATION via Huawei HMS geofencing reaches HIGH on the computed score alone, no editorial escalation needed: EU user location data routed through PRC-NSL infrastructure without disclosure or an adequacy decision. Pre-consent SDK init, Facebook codeless event logging, cross-app Custom Audience targeting, and a Chinese-OAID Adjust integration correct to MEDIUM. 2026-07-07: ProSiebenSat.1 Legal sent a formal cease-and-desist claiming findings "unfounded" following an internal technical review, without naming a single disputed finding or artefact - countered same day citing Art. 17 StGG/ISO 29147/GDPR Art. 89, lead SA (BlnBDI) CC'd. Four further follow-ups through 3 September 2026 restated the same three questions; no technical rebuttal of any specific finding was ever received.
click to expand
GDPR Art. 7GDPR Art. 44-49PRC National Intelligence Law Art. 7+2
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.