Finally, there are historical records stored on the server that are extremely important to the business and should never be modified. You would like to add an integrity control that allows you to verify on a periodic basis that the files were not modified. What control can you add?
C. Read-only attributes
Scroll down for answer
Hashing allows you to computationally verify that a file has not been modified between hash evaluations. ACLs and read-only attributes are useful controls that may help you prevent unauthorised modification, but they cannot verify that files were not modified. Firewalls are network security controls and do not verify file integrity.