Definitions Edit

Likelihood is the

chance of something happening, whether defined, measured or estimated objectively or subjectively, or in terms of general descriptors (such as rare, unlikely, likely, almost certain), frequencies, or probabilities.[1]
[a] weighted factor based on a subjective analysis of the probability that a given threat is capable of exploiting a given vulnerability or a set of vulnerabilities.[2]

Likelihood is "[t]he probability that a given event will occur.[3]

References Edit

  1. DHS Risk Lexicon, at 20.
  2. NISTIR 7621 Rev. 1, at A-2.
  3. Playbook: Enterprise Risk Management for the U.S. Federal Government, at 106.