Trello database backups are immediately encrypted with 256-bit AES encryption using GNU Privacy Guard (“GPG”) with a password-protected symmetric cipher. Encrypted backups can only be decrypted by members of the Trello operations team who have received training and have been authorized to decrypt the backups.</p> <p>Because user data stored in Trello is on a shared infrastructure, it is not possible for us to recover a subset of that information from backups.