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The net mission/business impact considering
1) the likelihood that a particular threat source will exploit, or trigger, a particular information system vulnerability, and
2) the resulting impact if this should occur. IT-related risks arise from legal liability or mission/business loss due to, but not limited to:
- Unauthorized (malicious, non-malicious, or accidental) disclosure, modification, or destruction of information; Non-malicious errors and omissions;
- IT disruptions due to natural or man-made disasters; or
- Failure to exercise due care and diligence in the implementation and operation of the IT.
SOURCE: SP 800-27