Which of the following measures would be MOST effective against insider threats to confidential information?

A.
Role-based access control

B.
Audit trail monitoring

C.
Privacy policy

D.
Defense-in-depth

Explanation:

Role-based access control provides access according to business needs; therefore, it reduces unnecessaryaccess rights and enforces accountability. Audit trail monitoring is a detective control, which is ‘after the fact.’
Privacy policy is not relevant to this risk. Defense-in-depth primarily focuses on external threats