Abstract: There is provided a computer implemented method encrypting and/or decrypting data, comprising: accessing data for encryption and/or decryption, wherein the data is of a user account of a plurality of user accounts, obtaining an account key in an encrypted state, the account key is obtained from an account key dataset storing at least one encrypted account key for each of the user accounts, providing over the network, the encrypted account key to a key management system(s) (KMS) hosted by a server, receiving over the network, a decrypted account key from the server hosting the KMS(s), wherein the KMS(s) decrypts the encrypted account key using an organization key stored and managed by the KMS(s), storing the decrypted account key in a data storage device set to provide temporary storage for decrypted account keys, and encrypting and/or decrypting the data associated with the user account using the decrypted account key.