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Question 315 - CAS-004 discussion

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A network administrator for a completely air-gapped and closed system has noticed that anomalous external files have been uploaded to one of the critical servers. The administrator has reviewed logs in the SIEM that were collected from security appliances, network infrastructure devices, and endpoints. Which of the following processes, if executed, would be MOST likely to expose an attacker?

A.
Reviewing video from IP cameras within the facility
Answers
A.
Reviewing video from IP cameras within the facility
B.
Reconfiguring the SIEM connectors to collect data from the perimeter network hosts
Answers
B.
Reconfiguring the SIEM connectors to collect data from the perimeter network hosts
C.
Implementing integrity checks on endpoint computing devices
Answers
C.
Implementing integrity checks on endpoint computing devices
D.
Looking for privileged credential reuse on the network
Answers
D.
Looking for privileged credential reuse on the network
Suggested answer: A

Explanation:

Reviewing video from IP cameras within the facility would be the most likely process to expose an attacker who has compromised an air-gapped system. Since air-gapped systems are isolated from external networks, an attacker would need physical access to the system or use some covert channel to communicate with it. Video surveillance could reveal any unauthorized or suspicious activity within the facility that could be related to the attack. Verified

Reference:

https://www.welivesecurity.com/wp-content/uploads/2021/12/eset_jumping_the_air_gap_wp.pdf

https://en.wikipedia.org/wiki/Air-Gap_Malware

https://www.techtarget.com/searchsecurity/essentialguide/How-air-gap-attacks-challenge-the-notion-of-secure-networks

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asked 02/10/2024
Kushantha Gunawardana
49 questions
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