Information, Computer and Network Security Terms Glossary and Dictionary

Tempest-Shielding

Tempest Shielding refers to the shielding of devices from Electromagnetic Interference (EMI) and to ensure communications security (TEMPEST). The most sophisticated devices use advanced micro-components that have been designed from scratch to minimize Tempest emanations. Generally, shielding involves encompassing the device in a Faraday cage that does not permit stray emanations, along with special modifications to the power source. This usually involves a heavy metal case around an object. Tempest shielding also involves such issues as the design of a room and placement of equipment within it, to ensure that no information can escape.

Related Terms

Tempest-Shielding