Within a secure data center, engineers have enclosed an entire row of server racks inside a conductive mesh that blocks both incoming and outgoing electromagnetic fields. What is the primary security purpose of deploying this enclosure?
Detect unauthorized access attempts by monitoring ambient radio-frequency signals
Provide redundant environmental controls such as precise humidity and temperature regulation
Prevent electromagnetic eavesdropping and data leakage by blocking emissions
Physically deter intruders by acting as a hardened barrier that delays forced entry
The conductive enclosure is a Faraday cage. By blocking electromagnetic emissions, it prevents sensitive signals from being intercepted (TEMPEST/eavesdropping) and shields the equipment from external electromagnetic interference. This makes it a preventive physical control aimed at protecting the confidentiality and integrity of information-not a mechanism for detecting intrusions, regulating environmental conditions, or physically deterring forced entry.
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What is a Faraday cage and how does it work?
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