27. A security analyst is investigating an alert that was produced by endpoint protection software. The analyst determines this event was a false positive triggered by an employee who attempted to download a file. Which of the following is the most likely reason the download was blocked?
Answer: A
A misconfiguration in the endpoint protection software
The download was most likely blocked due to a misconfiguration in the endpoint protection software, which can lead to legitimate activities being incorrectly flagged as malicious, resulting in false positives.
A) A misconfiguration in the endpoint protection software
This option is correct because misconfigurations can cause the software to apply overly stringent rules or incorrectly categorize legitimate downloads as threats. Such misconfigurations are common when the software settings are not tailored to the specific environment or usage patterns, leading to unnecessary alerts and blocks.
B) A zero-day vulnerability in the file
This option is incorrect as a zero-day vulnerability refers to an unknown security flaw that is being exploited. If the file contained such a vulnerability, the endpoint protection software would likely block it based on its threat detection capabilities rather than it being a false positive. A zero-day would not lead to a scenario where a legitimate download is falsely flagged.
C) A supply chain attack on the endpoint protection vendor
This option is also incorrect. A supply chain attack would compromise the software itself or its updates, potentially allowing malicious content to bypass detection. However, this scenario does not explain a false positive triggered by an employee’s legitimate download attempt, as it would indicate a failure in detection rather than a misclassification.
D) Incorrect file permissions
This option is not relevant in this context. Incorrect file permissions would prevent access to files rather than cause a false positive alert. This situation would not typically involve the endpoint protection software blocking a download based on perceived threats, but rather the system's access controls denying the download altogether.
Conclusion
In summary, the misconfiguration in the endpoint protection software is the most plausible explanation for the false positive, as it directly results in legitimate actions being blocked. Other options do not appropriately address the nature of the issue at hand, reinforcing that misconfigurations are critical factors in the efficacy of security software.