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chapter 8, chapter 9 - Coggle Diagram

- - - - disadvantages
        
        fingers can be damaged, scanning accuracy will be affected
      - advatntages
        
        everyone's fingerprints are unique
    - - advantages
        
        non-instrusive
      - disadvantages
        
        high error rate
    - - advantages
        
        very high accuracy
      - disadvantage
        
        very instrusive
    - - very expensive
      - very high accuracy
    - - advantage
        
        inexpensive
      - disadvantage
        
        affected by changes in lighting , age, hair,...
    - - advantage
        
        takes less than five seconds
      - disadvantage
        
        low accuracy
- - - - prevent viruses or hackers entering the user's computer network
      - checks whether incoming or outgoing data meets a given criteria
  - - - encrypts data, https. a type of protocol that allows data to be sent and received securely over internet
    - - encrypts data. a form of protocol that ensures the security and privacy of data between devices and users when communicating over the internet
- - - - unauthorised access to a computer system
        
        use strong password
        
        use of firewalls
    - - sends out legitimate-looking emails. clicks on the link they are sent to a fake one
        
        always cautious when opening email and attachment
        
        dont click on execute attachmens that are end in: .exe, .bat, .com
    - - malicious code installed on a user's computer or on a web server, the code will be redirect the user to a fake website
        
        use anti-spyware software
        
        user should always be alert
    - - gather data by monitoring key presses on the user's keyboard
        
        use aniti-spyware
        
        using pointing device
    - - program code or software that can copy itself and may delete or corrupt files
        
        install anti-virus software
        
        don't use software from unknown source
    - - junk mail
        
        block images in HTML meassages
        
        use the "junk email filter"