Security objective Potential impact
Low Moderate High
Confidentiality Unauthorised disclosure of information causing… Limitedadverse effect Seriousadverse effect Severe or catastrophiceffect
Integrity Unauthorised modification or destruction of information causing… Limitedadverse effect Seriousadverse effect Severe or catastrophiceffect
Availability Disruption of access to or use of information causing… Limitedadverse effect Seriousadverse effect Severe or catastrophiceffect

Source: FIPS 199 — Potential Impact Definitions for Security Objectives.