Computer Fundamentals

14

COMPUTER SECURITY

Contents

• Computer security—Security attacks, security mechanisms, security services
• Security threat and security attack
• Malicious software—Virus, worm, trojan horse, javascript, java applet, ActiveX control
• Hacking—Packet sniffing, password cracking, e-mail hacking
• Security services—Confidentiality, integrity, authentication, non-repudiation
• Security mechanisms
  • Cryptography—Secret key cryptography, public-key cryptography, hash function
  • Digital signature—Digital signature algorithms
  • Firewall—Functions of firewall, working principle, types of firewall (packet filter firewall, circuit filter firewall, proxy or application-level firewall)
  • Users identification and authentication—User name and password, smart card, biometrics ...