NordLocker offers top-notch security. It is based on GoCryptFS. When you add the data to your system, it automatically encrypts the data before backing it up to the cloud. This implies that anytime you can make modifications to that file without being obliged to encrypt the data explicitly. Its use of elliptic-curve cryptography (ECC) techniques is another best-in-class security feature. This is a much better option than the previous RSA key. 3072-bit RSA key Equals 256-bit ECC key. From here, you can understand the level of encryption that NordLocker provides.