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TEMPEST

   Also found in: Dictionary/thesaurus, Acronyms, Idioms, Wikipedia, Hutchinson 0.07 sec.

Refers to external electromagnetic radiation from data processing equipment and the security measures used to prevent them. Almost all electronic equipment emanates signals into free space or surrounding conductive objects such as metal cabinets, wires and pipes. Equipment and cables that meet TEMPEST requirements have extra shielding in order to keep data signals from escaping and being picked up by unauthorized listeners. It is also possible to use TEMPEST software that generates sufficient electronic noise to mask meaningful radio-frequency emissions.

TEMPEST was a code name for U.S. military operations throughout the 1960s. Later, it was turned into an acronym. Take your pick: Telecommunications Electronics Material Protected from Emanating Spurious Transmissions or Transient ElectroMagnetic Pulse Emanation STandard. See emanation and EMSEC.
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The atmospheric currents, under the influence of a tempest not far off, were driving them at the rate of from thirty to thirty-five miles an hour; the undulating and fertile plains of Mfuto were passing swiftly beneath them.
Five Weeks in a Balloon by Verne, Jules View in context
Here she tried again to force the nose of the flier back toward Helium, but the tempest seized the frail thing and hurled it remorselessly about, rolling it over and over and tossing it as it were a cork in a cataract.
The Chessmen of Mars by Burroughs, Edgar Rice View in context
-- Whether Tempter sent, or whether tempest tossed thee here ashore, Desolate, yet all undaunted, on this desert land enchanted-- On this home by Horror haunted--tell me truly, I implore-- Is there--is there balm in Gilead?
The Raven by Poe, Edgar Allan View in context
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