The main focus of Security was on Prevention, however since there are many ways to exploit a certain system a formula has been made for Protection. Protection = Prevention + (Detection + Response) Prevention - Access Controls, Firewalls, Encryption Detection - Audit logs, Intrusion Detection System, Honeypots Response - Backups, Incident Response Team, Computer forensics (Detection + Response) - alert when prevention fails to provide ways to address the problem This formula is also known for "Operation Model of Computer Security" since every security technique and technology falls to either one of these three elements in the equation. Three ways an organization handles Protection is by first ignoring security issues which leaves everything by default; merely just because it's easier to set things up - leaving the organization very vulnerable. Secondly they handle it by providing "Host Security" - security for each devices like installing anti-virus...