- Tempest
- Purpose: A set of standards and technologies designed to prevent electronic eavesdropping by reducing or shielding electronic emanations from devices like monitors.
- Van Eck Phreaking
- Definition: A method of eavesdropping that involves intercepting the electromagnetic radiation (known as Van Eck radiation) emitted by electronic devices, particularly monitors, to read the displayed information from a distance.
- White Noise
- Function: Broadcasting continuous false traffic to mask and hide the presence of real emanations, thereby preventing eavesdropping.
- Faraday Cage
- Description: A structure (such as a box, room, or entire building) with an external metal skin or wire mesh that surrounds an area on all sides. This metal layer acts as an EMI-absorbing capacitor, preventing electromagnetic radiation from escaping or entering the protected area.
- Control Zone
- Implementation: A secure area that is protected by either a Faraday cage, white noise generation, or both, to prevent electronic eavesdropping and ensure the security of sensitive information.
These concepts are critical for ensuring the physical security of electronic devices and preventing unauthorized access to sensitive information through electromagnetic eavesdropping.