Basic Concepts

The three key objectives (CIA Triad) of cybersecurity programs are confidentiality, integrity, and availability.

- Confidentiality: Unauthorized users don't gain access. (Firewalls, ACL's, encryption)

- Integrity: No unauthorized modifications. (Hashing, monitoring)

- Availability: The system is up when users need it. (fault tolerance, clustering, backups)

Nonrepudiation: Someone who performed an action can't deny performing said action (Digital Signatures) (Not a part of CIA, but also important.)