- Security and Cryptosystems

- Cryptography Basics

- The Basics of Cryptography

- Cryptography

- Applied Cryptography

- Data Encryption Standard

- A Crisis of Prioritization

- Loving the cyber bomb

- Cybersecurity

- Reducing Cybersecurity Risk

- Cyber Security Strategy

- Cyber Forensics

- Cyberattack capabilities

- Cyber attacks

- Targeted cyber attacks

- Cyber Warfare Doctrine

Поляризация сигналов и защита средств радиолокации от воздействия дискретных пассивных помех ...

Способ защиты радиолокационной станции от противорадиолокационных ракет на основе дополнительных источников излучения ...

Способ обзора пространства ...

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Definition:

The protection of data against unauthorized access. Programs and data can be secured by issuing passwords and digital certificates to authorized users. However, passwords only validate that a correct number has been entered, not that it is the actual person. Digital certificates and biometric techniques (fingerprints, eyes, voice, etc.) provide a more secure method (see authentication). After a user has been authenticated, sensitive data can be encrypted to preventData Encryption Standard eavesdropping (see cryptography).

Although precautions can be taken to authenticate users, it is much more difficult to determine if an authorized employee is doing something malicious. Someone may have valid access to an account for updating, but determining whether phony numbers are being entered requires a great deal more processing. The bottom line is that effective security measures are always a balance between technology and personnel management. See Parkerian hexad, information assurance, security scan, security audit, audit trail, NCSC, ICSA, access control, share-level security, user-level security and social engineering.