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Question

Difficulty: MediumMobile Device Ports and Accessories

A corporate traveler frequently needs to charge a company-issued mobile phone at public charging stations in airport terminals. The IT security policy strictly prohibits unauthenticated data connections to prevent juice jacking and malware transmission over physical port connections. Which hardware accessory should the IT technician issue to the employee to safely charge the device?

  1. A USB data blocker adapterAnswer
  2. B
    A Thunderbolt 3 active converter cable
  3. C
    A Mobile Application Management (MAM) isolation container
  4. D
    An IMEI port authentication dongle

Answer

A USB data blocker adapter
The correct option is the USB data blocker adapter. USB data blockers physically disconnect the data signal pins (such as the D+ and D- lines in USB connections) while leaving only the power wires connected. This ensures electrical power flows to charge the battery while completely eliminating the risk of juice jacking or malicious data transfers over public USB ports.

Step-by-Step Solution

1
Identify the security risk associated with physical mobile port connections in public places.
Connecting a mobile device directly to a public USB port exposes the data pins (D+/D- or high-speed data lanes) to potential host computers disguised as charging stations (juice jacking).
Public USB ports can establish unauthorized data sessions alongside electrical charging.
2
Evaluate hardware accessories designed to mitigate physical port security risks.
A USB data blocker physically severs or excludes data line connections while passing electrical power lines through to the device.
Disabling data lines prevents any digital handshake or software data exchange between the public charging port and the mobile device.

Key Concept

Mobile Port Security and Accessories
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Topics

Mobile Device Ports and Accessories

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