The incident response team reviewed the security logs and discovered that the network had been breached, due to a misconfigured firewall. This is a failure of which element of the operational model of computer security?

a. Protection

b. Prevention

c. Detection

d. Response

This is a failure of prevention model of computer security

Explanation:

Because the firewall was misconfigured so attack prevention mechanism failed to resist the attack and the security of computer is compromised. Prevention is an important model of operational security because protection is possible firstly attacks are prevented from targets and if not prevented and failed then they are detected and finally security department respond to that attack.

protection = prevention if prevention failed than (detection+response)