Android has two ways of encryption. FBE = File Based Encryption, newer. FDE = Full Disk Encryption, older. FBE is only secure when the system partitions have d

Android has two ways of encryption. FBE = File Based Encryption, newer. FDE = Full Disk Encryption, older. FBE is only secure when the system partitions have dm-verity enforced and verity is only enforced when the bootloader is locked. FDE is a bit more resilient with an unlocked bootloader since there is less data left unencrypted. However in either scenario without a locked bootloader and verity it is trivial for an attacker to insert malicious code that can then run once your device is unlocked and send off your files.