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Difficulty: HardPhysical Security Controls

A systems administrator needs to protect legacy database servers housed in a shared facility room where multiple third-party contractors have valid door key access. The administrator must ensure that any unauthorized physical opening of the server chassis to access internal drives is visibly detectable during audits, without requiring continuous electrical power or active network monitoring. Which of the following physical security controls should the administrator implement?

  1. Tamper-evident seals placed across the chassis panel seamsAnswer
  2. B
    Biometric door readers installed at the entrance of the facility room
  3. C
    Steel cable locks secured between the chassis frame and the rack
  4. D
    Physical USB port blockout devices inserted into all exposed interfaces

Answer

Tamper-evident seals placed across the chassis panel seams provide passive, visible detection of unauthorized physical opening of the server enclosure without relying on power or network connectivity.
Tamper-evident seals are designed specifically to indicate whether an enclosure or chassis panel has been opened or altered. When an unauthorized person attempts to remove the panel, the seal fractures or leaves a distinct patterned mark that cannot be reapplied seamlessly. Because they are completely passive, they require no power or network connections, perfectly matching the audit requirement.

Step-by-Step Solution

1
Analyze the physical security requirement.
The primary goal is to detect unauthorized physical opening of the server chassis to expose internal drives in an environment where room key access is shared.
Identifying the targeted threat (chassis opening) separates room access controls from component tamper detection.
2
Evaluate the environmental constraints.
The solution must operate passively without electrical power or active network monitoring.
Eliminating powered or network-dependent mechanisms rules out electronic chassis intrusion sensors and automated door access logging.
3
Select the appropriate physical security control.
Tamper-evident seals fracture or display permanent adhesive patterns when enclosure panels are removed.
Seals satisfy both the visual detection requirement and the zero-power constraint.

Key Concept

Tamper Detection and Physical Integrity Controls
Estimated Time:1m 30s
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Topics

Physical Security Controls

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