Comparison Table
| Option | Primary difference | Best use |
|---|---|---|
| Preventive | Stops or blocks | MFA, firewall deny rule, allowlisting |
| Detective | Finds or alerts | SIEM alert, IDS, audit review |
| Corrective | Restores or fixes | Backup restore, patch, account disablement |
Exam clue: Do not call a monitoring control preventive unless it actually blocks the action.
How To Use It
Read the scenario for the required outcome. If the requirement is prevention, do not stop at detection. If the requirement is accountability, do not stop at authentication. If the requirement is recovery, distinguish data loss from service downtime.