Security Incident is a term designating any unusual or unpleasant security event that leads to the distortion of rules of security in the organization. Security incident is due to a failure of security measures or breach of security policy. By its nature it can be:
- Information security incident - breach of confidentiality, integrity, availability or repudiation of information
- Personnel security incident - infringement of personal safety
- Incident of physical nature - breach of security of property or infrastructure (such as burglary)
Security incident can cause problems (disaster, accident, financial loss), increase risks, and reduce safety.