Anti-malware (CIE IGCSE ICT)

Revision Note

Becci Peters

Expertise

Computer Science

Anti-malware

  • Anti-Malware (also known as Anti Virus software) is designed to protect devices against viruses and malicious software
  • Anti-malware has 3 mains purposes, detect, prevent and remove malicious software
  • Anti-Malware is installed onto a computer system and will operate in the background
  • Common features of Anti-Malware software include the following:
    • Comparing the scanned files against a large database of known threats
    • Real-time scanning
    • Regular updates to gather an up to date list of known threats
    • Quarantine of infected files
      • Quarantining files allows threats to be automatically deleted
      • Allows the user to determine if the file is a legitimate threat and not a false positive
    • Scanning external storage media such as USB flash drives to prevent viruses from being loaded onto the computer system
      • The scanning of downloaded software to ensure that it is free from any threats
    • Heuristic checking
      • This is the identification of potential threats within a file from behavioural patterns and characteristics rather than just relying on a database of known viruses

Worked example

Give two examples of how Anti-Malware protects devices against malicious software

[4]

Regular updates by the Anti-Malware software will keep an up to date list of threats [1]

If any of the threats are detected on the device, the Anti-Malware software will quarantine the files [1]

Anti-Malware software will scan external storage media when they are connected to the device [1]

Preventing viruses from being transferred from storage media onto the device [1]

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Becci Peters

Author: Becci Peters

Becci has been a passionate Computing teacher for over 9 years, teaching Computing across the UK helping to engage, interest and develop confidence in the subject at all levels. Working as a Head of Department and then as an educational consultant, Becci has advised schools in England, where her role was to support and coach teachers to improve Computing teaching for all. Becci is also a senior examiner for multiple exam boards covering GCSE & A-level. She has worked as a lecturer at a university, lecturing trainee teachers for Computing.