Aaron's action is considered legal, as you are allowed to make a backup copy of a legal copy of a software, but it can only be used in case the original software is destroyed or unusable.
That is encryption. Encrypted files usually have a password assigned. In order to decrypt the file, you need to have the password.
Answer:
Deleting files and etc on your computer.
Try icthio.com I use that and its free.Good luck,!
