We decompile publicly distributed Android and iOS apps and trace their data flows to real endpoints in real countries. We document what we observe, distinguish verified findings from interpretation, and preserve the evidence behind every conclusion. No company can buy a better result — every organisation is held to the same standard, whether it pays us or not. This permanent disclosure ledger puts that principle into practice.
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 and documented
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 SumUp Business.
OrganisationNotifiedStatusSEVIntel (click to expand)StatutesResolvedDisclosureElapsedReport
SumUp Business
PRIVATE
2026-07-05
104d ago
RESOLVED
CRITICAL
SumUp's merchant payment app runs four separate biometric and identity-verification vendors for what should be a single identity check, handing your face or ID data to four companies instead of one. Its own data-processing agreement with merchants still cites a legal basis for moving data outside the EU that the EU repealed years ago, meaning the paperwork behind those transfers was never brought up to date.
com.kaching.merchant (legacy Kaching Retail package name). Merchant POS/payment-terminal app: live Plaid US open-banking integration persists bank-account access tokens. Four overlapping biometric/liveness KYC vendors (Onfido, FaceTec, Sumsub, Unico) for the same verification purpose. Canonical pre-consent Firebase/ML Kit auto-init. No certificate pinning despite three unused in-SDK CertificatePinner copies. Published merchant DPA cites the repealed SCC 2010/87/EU. Three hardcoded Google API keys plus a live Realtime Database URL. Controller is a 3-entity group spanning the UK, Ireland and Lithuania Five messages, two of them to a non-existent address, drew no reply and none of the three questions answered. Case closed and published 2026-10-17, 14 days after the 2026-10-03 embargo.
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. · github.com/rfi-irfos/android-security-audit-2026
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