A new helpdesk employee at a multinational corporation took it upon himself to test the security of the servers that holds highly confidential information regarding specific government projects. Which of the following is a well-known technique for deterring such individuals?
Warning banners stating unauthorized access is forbidden are a well-known technique for deterring individuals from attempting unauthorized actions. These banners serve as a psychological deterrent by clearly indicating the consequences of unauthorized access and are commonly used in many environments to prevent misbehavior.
B and D are rather preventive controls, while A and C are deterring controls. I would go for A, since question states well-known deterring controls.