Password Protect Files and Folders

DH recently told me he had text file that contained all of his passwords for every site he visits, including his banking and financial institutions. If ever his MacBook Pro was lost, stolen or hacked into, someone would have access to all of this personal information and it could devastate him. So I told him to take these 5 quick steps to password protect it:

1. Open "Disk Utility"
2. Click on the "New Image" icon and choose where you want to save it.
3. Select the size you'd like and set encryption to AES-128 (leave the format at read/write).
4. Click create and enter a password.
*Note: Be sure to uncheck the box below it so the password is not saved in the keychain. There would be no point in doing this if the password was saved in the keychain for anyone to use. There is no backdoor workaround for this, so be sure to remember your password!!
5. Launch the Disk Image you created and drag your personal/private files/folders into the image. When your done, eject the image. From that point forward, you will require the password to open it.