Data encryption is a security measure that encodes data to safeguard it from unauthorized access. It transforms plaintext into ciphertext using cryptographic algorithms, rendering it unreadable without the decryption key. Encryption is widely used to protect sensitive information, such as personal data, financial records, and corporate communications, both in transit and at rest.

In transit, data encryption secures information as it moves between devices or across networks, preventing interception or tampering by unauthorized parties. At rest, encryption safeguards data stored on devices, servers, or in the cloud, shielding it from unauthorized access in case of theft or unauthorized access. Overall, data encryption is a critical component of cybersecurity strategies, ensuring confidentiality, integrity, and privacy of sensitive information.

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