Mobile App Security: Storing Credentials & Encrypting Data on iOS and Android
Protect mobile apps against reverse engineering, token theft, and man-in-the-middle attacks using Keychain, Keystore, and SSL Pinning.
Rajesh Varma
Cloud & Infrastructure Lead
- Store authentication tokens securely in iOS Keychain Services and Android EncryptedSharedPreferences.
- Enforce SSL Certificate Pinning to prevent HTTP interception on public Wi-Fi networks.
- Implement biometrics (Face ID / Fingerprint) for sensitive financial or personal app access.
Mobile App Security Best Practices
Securing user credentials, OAuth tokens, and local cache data is a fundamental security requirement for mobile apps handling financial or personal data.
**TL;DR:** Always store sensitive tokens in hardware-backed storage (Keychain / EncryptedSharedPreferences) and pin SSL certificates.
Why is SharedPreferences unsecure for authentication tokens?
Standard SharedPreferences store XML files in plaintext on rooted Android devices, making tokens vulnerable to extraction.
Rajesh Varma
Cloud & Infrastructure Lead
Rajesh leads mobile application security and cloud compliance.
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