You cannot hack an encrypted hard drive unless you let a hacker find your password. This means that the security of your encrypted hard drive is as strong as the security of your password. If your password is easy to guess or if you are tricked into divulging it, hackers can hack your encrypted hard drive. It can also be hacked if you enter your password on a computer that has been affected or made vulnerable by malware and that is running key recording software. The encryption process converts your data into cipher text, which prevents hackers from accessing it. However, if your encryption system is not properly implemented and the software introduces a master password, a hacker can decrypt it. Otherwise, a hacker might try to bypass your encryption, but it would take a long time, especially if your encrypted drive uses 256-bit AES encryption.