- I'm looking to back up some files on google drive. Is using 7zip to encrypt the files into a .zip using AES-256, and then using 7zip again to encrypt/zip the encrypted zipped folders adequate security before uploading the files to the cloud? https://www.reddit.com/r/privacy/comments/94odnu/im_looking_to_back_up_some_files_on_google_drive/ 13 comments privacy