Data encryption is the process of converting readable data (plaintext) into an unreadable format (ciphertext) to prevent unauthorized access.There are two types of encryption: Symmetric Encryption (AES, DES, Blowfish) and Asymmetric Encryption (RSA, ECC).Hashing is a one-way process used to verify data integrity, while encryption is used to protect data.Developers should implement secure transmission, access controls, database security, and environment security to protect data.