V2 Apk" -

: Because the signature covers the whole file, the Android system can verify the app much more quickly than it can with file-by-file verification.

: It addresses "rollback" attacks and prevents malicious mangling of compressed entries that were possible under the v1 scheme. Safety Report: Sideloading and Modded APKs v2 apk"

While the v2 scheme itself is a security feature, downloading APK files from third-party sources (sideloading) still carries significant risks. How to Protect Your Device from APK Fraud? | RBL Bank : Because the signature covers the whole file,

: It detects any changes made to the APK, including metadata in the ZIP file, ensuring that the version you install is exactly what the developer released. including metadata in the ZIP file