Question 800
After a corrective change at a corporate headquarters, the team documents: A Security profile is attached to a decrypted application flow but threat visibility is absent because the profile belongs to a different allow rule. Which repeatable control BEST prevents a recurrence?
Explanation
Correct Answer
Validate both decryption and Security Profile Group coverage end to end. This control reduces recurrence of the documented mechanism: Decryption enables inspection but does not automatically attach every threat profile. It creates a repeatable check around the needed response: Verify the effective Security rule and profile group in addition to the Decryption policy match.
Incorrect Answers
Use rule precedence checks for exception lifecycle tests. That safeguard addresses another potential failure: An analyst creates a no-decrypt policy for an excluded URL but overlooks the rule position, so a higher decrypt rule still intercepts it. It is not the most targeted recurring control for the described cause: Decryption enables inspection but does not automatically attach every threat profile.
Test decryption issuer and endpoint trust after any signing CA rotation. That safeguard addresses another potential failure: A certificate renewal makes firewall-generated forward-proxy chains untrusted by managed endpoints while unchanged security rules continue allowing traffic. It is not the most targeted recurring control for the described cause: Decryption enables inspection but does not automatically attach every threat profile.
Audit affected destinations behind each decryption exception. That safeguard addresses another potential failure: A decryption bypass based on a wide destination subnet includes unrelated web hosts and hides malicious content in the same network. It is not the most targeted recurring control for the described cause: Decryption enables inspection but does not automatically attach every threat profile.