All communications between the BackupVault Backup Server and your computer are transported in a 256-bit SSL (Secure Socket Layer) channel. Although all your backup files travel through a public network (internet), eavesdroppers have no knowledge of what has been exchanged.
All of your files are first zipped and encrypted with a your defined encrypting key before they are sent to the BackupVault backup server. To all people but you, your files stored on the BackupVault backup server are no more than some garbage files with random content.
The encryption key used to encrypt your files resides only on your computer and is known only to you. It is never transmitted anywhere across the network. If this key is lost, all backup files can never be recovered.
Reminder : Please make sure you write down you encryption key in a safe place where it will never be forgotten. Otherwise, you will never be able to recover your backup files.
Currently, the algorithm that we are using to encrypt your files is 256-bit Twofish. It is a block cipher designed by Counterpane Labs. It was also one of the five Advanced Encryption Standard (AES) finalists chosen by National Institute of Standard and Technology (NIST). It is subject to frequent public reviews, however no known successful attack against this algorithm has been reported.
You can also restrict access to your backup files from the set of IP addresses you defined. If someone tries to access your data from an IP address not on your defined list, their access will be denied. This additional security ensures backup files is not open to all location, even username and password are known.