Question 160
A network and security operations handoff reports: A file-download policy includes an exception for archives below a general compressed-file block, and test ZIP downloads never reach the exception. Which technical principle most directly explains this behavior?
Explanation
Correct Answer
The underlying principle is: Ordered file-type policy rules can shadow later specific category or user exceptions when an earlier broader rule matches first. Address it by: Move or refine the specific approved exception so it evaluates before the broader block for its intended group. The confirmation is: Approved ZIP downloads from the known distribution source are permitted while untrusted archives remain restricted.
Incorrect Answers
File-type control acts on object classification and selected user groups, so a blanket block may not reflect an approved role-based exception. “Create a scoped rule for the documented signed installer source and group without removing the default risky executable restriction” would remedy that alternative situation, but it would not correct the present issue: ordered file-type policy rules can shadow later specific category or user exceptions when an earlier broader rule matches first.
“Restore specific destination, application and risk conditions and confirm precedence with a controlled test environment” is the supported response when an incomplete threat policy scope can extend an intended malicious-indicator block to ordinary encrypted business traffic. Here the decisive response is “Move or refine the specific approved exception so it evaluates before the broader block for its intended group”, so that different intervention does not meet the stated requirement.
Blocking a file category for policy reasons is not a malware verdict and cannot prove the file contained malicious code. “Inspect the actual file type action and any separate sandbox or antivirus verdict before escalating a malware incident” applies to that other condition. The reported evidence is a file-download policy includes an exception for archives below a general compressed-file block, and test ZIP downloads never reach the exception; this alternative would address the wrong dependency.