Security Property 3:Integrity Integrity -Protect system/data from being modified. -System integrity Prevent modification to system e.g.,communication system:message modification,insertion,deletion,and replay (integrity of communication channels) -Data integrity Prevent modification to data e.g.,communication system:message modification -Mechanisms: ●Message Digest 66 Security Property 3: Integrity  Integrity ─ Protect system/data from being modified. ─ System integrity ● Prevent modification to system – e.g., communication system: message modification, insertion, deletion, and replay (integrity of communication channels) ─ Data integrity ● Prevent modification to data – e.g., communication system: message modification ─ Mechanisms: ● Message Digest