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1.2 Security - PowerPoint PPT Presentation


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1.2 Security. Computer security is a branch of technology known as information security, it is applied to computers and networks.

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Presentation Transcript
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Computer security is a branch of technology known as information security, it is applied to computers and networks.

  • It is used to protect information and property from theft, corruption or natural disaster, while at the same time allowing the information and property to remain accessible for its intended users.
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There are three ‘categories’ of computer insecurity, these include:

  • 1. Vulnerability
  • A weakness which allows an attacker to reduce a systems computer assurance.
  • Examples are:
  • -Social engineering: manipulating people into divulging confidential information
  • -Eavesdropping: involves making independent connections with the victims, sending messages between them. Making them think they are in a private connection when in reality the whole conversation is controlled by the attacker.
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2. Exploits

  • Is a sequence of commands that takes advantage of a bug, glitch or vulnerability in order to cause unintended behavior on a computer software
  • Examples include:
  • -Trojans: malware* that facilitates unauthorized access
  • -Viruses and worms: Computer program that copies itself and infects a computer
  • -Denial of service: Attempt to make a computer resource unavailable to its intended users
  • *= software designed to infiltrate a computer system without the owner knowing
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3. Payload

  • Effect caused by a virus or malicious code, for example moving and deleting files.
  • Other examples:
  • -Backdoor: method of securing remote access to a computer
  • -Root kit: software that hides the hackers presence from administrators
  • -Key logging: action of tracking the keys struck on a keyboard, typically done in way that the user is unaware he’s being monitored.
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Ways of protecting computers/networks

  • Username/passwords
  • Firewalls
  • Antivirus
  • Encryption