Computers: Security and Privacy

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Chapter 11

• Computers Security and Privacy

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• Computer security risk
• Any event/action that could cause a loss/damage
  to computer
• hardware/software/data/information
• Cybercrime
• Computer viruses
• Activated on your computer basically by
• Opening an infected file
• Running an infected program
• Booting with an infected disk
• By e-mail attachments
• Other Malware
• Worm
• Trojan horse

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• Precautions
• Uninfected boot disk
• Macros security level
• Antivirus program
• Unauthorized access and use
• Identification and authentication
• Usernames and passwords
• Possessed objects
• Biometric devices
• Callback system

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• Hardware theft
• Software theft
• Information theft
• Encryption
• Plain text
• Encryption key
• Cipher text
• Types of encryption
• private key encryption
• Data Encryption Standard (DES)
• Public key encryption
• RSA

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• Internet and Network security
• No central administrator
• Securing Internet transactions
• 40-bit/128-bit encryption
• Secure site
• Digital certificates
• Security protocols
• Secure Sockets Layer (SSL)
• Secure HTTP (S-HTTP)
• Secure Electronic Transaction (SET)
• Firewalls
• Proxy server
• Personal firewall
• Cookies