Techniques for achieving security in multi-user computer systems and distributed computer systems: Basics of cryptography, network security applications and system security, conventional encryption and message confidentiality, public-key cryptography and message authentication, authentication applications. Electronic mail, IP, web, and network management security. Intruders, viruses, and firewalls.

To understand the basic principles of computer network security. To analyze and apply cryptographic techniques for data protection. To evaluate threats and design protective mechanisms in a networked system.