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Electromagnetic Eavesdropping

The interception of electromagnetic signals to gather sensitive information.

Understanding Electromagnetic Eavesdropping


Electronic devices such as keyboards, monitors, and wireless communication systems emit electromagnetic (EM) signals. Sophisticated adversaries use specialized equipment to capture and decode these signals, reconstructing confidential data without direct system access.

Key Features of Electromagnetic Eavesdropping


  1. Works Without Physical Contact – Attackers intercept signals remotely.

  2. Used for Spying on Sensitive Communications – Targets government, financial, and military sectors.

  3. Difficult to Detect – Operates without triggering standard security alarms.

Best Practices for Preventing Electromagnetic Eavesdropping


1. Use EM Shielding for Sensitive Equipment

  • Implement Faraday cages to block signal leaks.

2. Encrypt Wireless Communications

  • Secure Wi-Fi, Bluetooth, and mobile networks with strong encryption.

3. Implement TEMPEST Countermeasures

  • Use government-recommended shielding for high-security environments.

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