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Attack
  • The act of aggressively trying to bypass security controls on an Automated Information System. The fact that an attack is made does not necessarily mean that it will succeed. The degree of success depends on the vulnerability of the system or activity and the effectiveness of existing countermeasures. (NCSC-WA-001-85;)
  • The realization of a threat. How often a threat is realized depends on such factors as the location, type, and value of information being processed. Thus, short of moving the system or facility or radically changing its mission, there is usually no way that the level of protection can affect the frequency of attack. The exceptions to this are certain human threats where effective security measures can have a deterrent effect. The fact that an attack is made does not necessarily mean that it will succeed. The degree of success depends on the vulnerability of the system or activity and the effectiveness of existing countermeasures. (OPNAVINST 5239. 1A;)