The BSS Online Backup Service uses the trusted, versatile encryption module -- Twofish.

Twofish is a 128-bit block cipher, meaning that data is encrypted and decrypted in 128-bit chunks. The key length can vary from 32 to 256 bits. The algorithm uses 16 rounds, or iterations of the main algorithm. It has been found that the number of rounds is exponentially proportional to the amount of time required to find a key using a brute-force attack. So as the number of rounds increases, the security of the algorithm increases exponentially.

Twofish has been extensively analyzed and no significant weaknesses have been found, which is why it has been selected as the preferred method to secure your data.

Don't take our word for it, though! Take a look at the other companies who trust Twofish to encrypt their data.