Data security ensures that sensitive information cannot fall into the wrong hands. Techniques used to secure computer data including encryption, which scrambles messages so they cannot be read without knowing a specific decryption key; authentication, which verifies user-access identities through passwords; and access control, which limits certain users to see only certain data. Other techniques include firewalls that create virtual walls between trusted networks and the internet, and virus scanning software that detects malicious programs.
Leave a Reply