App Repackaging Prevention

Definition

App Repackaging Prevention protects an application from being modified, tampered with, or rebuilt by attackers. Repackaged apps often look identical to the real app but contain hidden malware that can misuse the app's functions, steal data, etc.

Security Implications

If a repackaged (fake) version of an app is installed on your device, attackers may:

• Steal passwords, OTPs, financial information, etc.
• Inject malware or ads
• Modify how the app behaves
• Hijack your account or transactions

This puts both the app user and the business at serious risk.

How To Protect Yourself From App Repackaging?

If your app shows a "repackaging detected" or "tampered app" warning, it usually means the app installation isn't trusted or the device environment is causing a false warning. You can fix this by:

1. Reinstalling the App from an Official Store

• Uninstall the app from your device
• Reinstall it only from Google Play Store or Apple App Store (Never use APKs from unknown sources.)

2. Remove Duplicate or Modified Versions

• Check if you have two versions of the same app.
• If yes, uninstall all versions and reinstall the app from the official App Store.

3. Disable Unknown App Installations

• Go to Settings -> Apps -> Special App Access -> Install Unknown Apps.
• Turn OFF permission for apps like browsers, file managers, or third-party stores

4. Restart Your Device

• Temporary system glitches or corrupted caches can trigger warnings.

If the warning still appears after reinstalling, it may indicate device-level tampering. In that case, it's recommended to contact the app's support team for further assistance.