TEMPEST


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TEMPEST

An umbrella term for external electromagnetic radiation from data processing equipment and the security measures used to prevent them. Almost all electronic equipment, including chips, bus pathways and metal communications lines, 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 eavesdropping. 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. The name was turned into several informal reverse acronyms such as Telecommunications Electronics Material Protected from Emanating Spurious Transmissions or Transient ElectroMagnetic Pulse Emanation STandard (see backronym). See emanation and EMSEC.
References in classic literature ?
Indeed they were at sea, and the ship and crew were in peril of tempest.
Now, the day was drawing towards the night, and the air was very still, for the heat was great and a tempest was gathering, as I, who am a Heaven-Herd, knew well.
what if all Her stores were op'n'd, and this Firmament Of Hell should spout her Cataracts of Fire, Impendent horrors, threatning hideous fall One day upon our heads; while we perhaps Designing or exhorting glorious Warr, Caught in a fierie Tempest shall be hurl'd Each on his rock transfixt, the sport and prey Of racking whirlwinds, or for ever sunk Under yon boyling Ocean, wrapt in Chains; There to converse with everlasting groans, Unrespited, unpitied, unrepreevd, Ages of hopeless end; this would be worse.
and for summer rain, I never saw such broad downright flat drops fall out of the clouds; the oaks, too, notwithstanding the calm weather, sob and creak with their great boughs as if announcing a tempest.
Her passage created a miniature tempest which disarranged anew the hair of the lady on the landing, who waited in breathless alarm until two light shocks and a thump announced that the aerial voyagers had landed safely in the hall.
I pulled off my shoes and stockings, and, wailing two or three hundred yards, I found the object to approach nearer by force of the tide; and then plainly saw it to be a real boat, which I supposed might by some tempest have been driven from a ship.
She was a curious woman, whose dresses always looked as if they had been designed in a rage and put on in a tempest.
And tell the Deep-Sea Viceroys the story of our woe; Ere, empty as the shark's egg the tempest flings ashore, The Beaches of Lukannon shall know their sons no more!
The sea, running mountains high, threw skywards with each wave mighty masses of white foam, which the tempest seemed to snatch at and whirl away into space.
The tempest burst on the 18th of May, just as the Nautilus was floating off Long Island, some miles from the port of New York.
A sort of tempest arose on the 3rd of November, the squall knocking the vessel about with fury, and the waves running high.
The tempest was let loose and beating the atmosphere with its mighty wings; from time to time a flash of lightning stretched across the heavens like a fiery serpent, lighting up the clouds that rolled on in vast chaotic waves.