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Written by Cecilia Chee, Singapore   
Saturday, 01 October 2011 15:48


Categorising security

There is an immense literature on the analysis and categorisation of security. Part of the reason for this is that, in most security systems, the "weakest link in the chain" is the most important. The situation is asymmetric since the 'defender' must cover all points of attack while the attacker need only identify a single weak point upon which to concentrate.


IT realm

  • Application security
  • Computing security
  • Data security
  • Information security
  • Network security

Physical realm

  • Airport security
  • Port security/Supply chain security
  • Food security
  • Home security
  • Physical security
  • School security
  • Shopping centre security
  • Infrastructure security



  • Aviation security is a combination of material and human resources and measures intended to counter unlawful interference with aviation.
  • Operations Security (OPSEC) is a complement to other "traditional" security measures that evaluates the organization from an adversarial perspective.
Last Updated on Thursday, 03 November 2011 17:59
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