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Question

Difficulty: MediumPhysical Security Controls

A desktop administrator needs to monitor for unauthorized physical opening of computer cases deployed in unattended remote branch offices. The administrator requires a solution that logs an immediate hardware-level event whenever an enclosure panel is removed. Which of the following physical security controls best satisfies this requirement?

  1. Chassis intrusion detection switchAnswer
  2. B
    Tamper-evident seal
  3. C
    Cable lock
  4. D
    Privacy filter

Answer

Chassis intrusion detection switch
A chassis intrusion detection switch is an active physical security control consisting of a spring-actuated switch attached to the computer case and wired to the motherboard. When an unauthorized user removes the case cover, the switch releases and triggers a system event recorded in the BIOS/UEFI firmware, allowing administrators to audit physical case breaches.

Step-by-Step Solution

1
Analyze the technical requirement to detect the physical opening of a computer case and generate an active hardware event log.
Determine that the control must interface directly with internal motherboard hardware to trigger a system alert.
Passive physical controls cannot emit electronic alerts or software logs when a physical breach occurs.
2
Evaluate the mechanism of a chassis intrusion detection switch.
Recognize that a chassis switch connects to the motherboard sensor headers and changes state when the side panel is removed.
This action instantly records a hardware event in BIOS/UEFI log memory.

Key Concept

Chassis Intrusion Detection
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Topics

Physical Security Controls

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