A datacenter recently experienced a breach.
When access was gained, an RF device was used to access an air-gapped and locked server rack.
Which of the following would BEST prevent this type of attack?
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A. B. C. D.A.
The scenario presented in the question is one where an attacker gained access to a locked server rack that was air-gapped using an RF device. This means that the attacker was able to communicate wirelessly with the server rack, despite it being physically isolated from any external networks.
To prevent this type of attack, the BEST solution would be to use a Faraday cage. A Faraday cage is a metallic enclosure that blocks all electromagnetic signals from passing through it. This includes RF signals, which are the type of signals used by the attacker to access the server rack. By placing the server rack inside a Faraday cage, it would be completely isolated from any external RF signals and would be impossible to access wirelessly.
Smart cards, infrared detection, and alarms are all useful security measures in their own right, but they are not the BEST solution for preventing the specific type of attack described in the question.
Smart cards are typically used for user authentication and access control, but they would not prevent an attacker from accessing an air-gapped server rack using an RF device.
Infrared detection can be used to detect heat signatures and movement, but it would not be effective against an RF attack.
Alarms can be used to alert security personnel to an intrusion attempt, but they would not prevent the attacker from gaining access to the server rack in the first place.
In summary, the BEST solution for preventing an RF attack on an air-gapped and locked server rack would be to place it inside a Faraday cage.