Incident Response Services (INRS) comprise both proactive and reactive activities. The proactive services are designed to prevent incidents and include onsite consulting, strategic planning, security audits, policy reviews, vulnerability assessments, security advisories and training. Reactive services involve telephone and on-site support for responding to malicious events such as Denial of Services (DoS) attacks, virus, worm, and trojan horse infections, illegal inside activities, espionage and compromise of sensitive internal agency databases.