What is a 'versioned API compatibility matrix' in the context of mobile app distribution, and why do outdated app versions represent a security risk?
- A.Mobile apps may contain security vulnerabilities patched in later versions; users who do not update continue running vulnerable code. Both Google Play and App Store allow developers to force minimum version requirements, and enterprise MDM can block apps below a minimum build number
- B.Outdated apps are slower but pose no security risk as long as the device OS is updated
- C.App store distribution automatically updates all apps on iOS and Android; outdated versions cannot exist
- D.Outdated app versions only matter for server-side security; client code is irrelevant once deployed
Why A is correct
Unpatched mobile apps expose users to known CVEs (certificate validation bugs, WebView vulnerabilities, business logic flaws). Distribution controls: Google Play allows 'Forced Updates' (minimum version enforcement), iOS apps can implement version checking at startup, and enterprise MDM (Intune, Jamf) can block app usage below a minimum version. The principle: the distribution channel should support a path to rapid patch deployment.
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