>Once you have your data restored, you can change the encryption key. Unfortunately, even if you change it, they still have access to the files encrypted with

>Once you have your data restored, you can change the encryption key. Unfortunately, even if you change it, they still have access to the files encrypted with the previous key. Also, it's generally recommended to test the restoration of your backups, otherwise you can find yourself in a really bad spot if/when you need to restore - IMHO, this definitely includes verifying that there wasn't an error in the encryption/decryption process (i.e. changing the key would necessitate testing decryption with the new key, which requires giving them the new key).