Case UC-07 · OWASP M6 Inadequate Privacy Controls

Excessive background data collection before consent

A bundled analytics component collected identifiers, location and clipboard contents in the background before any consent gate, beyond what the app's purpose required.

This article documents a representative, anonymised mobile application security case. It describes the weakness, why it matters to a business, how Mobexa detects it, and how to remediate it. No specific application, company or individual is identified.

Contents

  1. Context
  2. What the research team found
  3. Why it matters
  4. How Mobexa surfaces it
  5. Remediation
  6. Standards mapped

1 Context

A bundled analytics and advertising component collected device identifiers, coarse location and, on some flows, clipboard contents in the background. Collection began before any consent gate and went beyond what the app's stated purpose required.

2 What the research team found

Dynamic analysis captured the outbound telemetry and the data fields it carried. The collection started at app launch, independent of the in-app privacy choices presented to the user, so a user opting out still emitted data.

3 Why it matters

Collecting more than a feature needs, before consent, exposes users and the publisher to privacy harm and regulatory penalties, and can surface as undisclosed data flows during store review. The app's own code may be incidental, because the behaviour rides in through a third-party SDK.

4 How Mobexa surfaces it

Mobexa records what data leaves the device, to which categories of endpoint, and whether collection respects consent state, mapping each flow to the data type involved under M6.

5 Remediation

Minimise collection to what the feature requires, gate all non-essential telemetry behind explicit consent, audit third-party SDK data practices, and document every outbound data category for store and regulatory disclosures.

6 Standards mapped

Table 1. Frameworks and references for this case
FrameworkReference
OWASP Mobile Top 10 (2024) M6 Inadequate Privacy Controls
CWE CWE-359 Exposure of Private Personal Information
OWASP MASVS MASVS-PRIVACY
privacytelemetryconsent

See also

Documented by the Mobexa research team. This case is anonymised and provided for educational use; the mapping references the OWASP Mobile Top 10 (2024).