Echelon Hear it!

Echelon definition - telecom
A system operated by the United States National Security Agency (NSA), Echelon reportedly eavesdrops on approximately three billion conversations a day in defense of national security. Echelon apparently can tap any electromagnetic transmission system, including fiber optics, anywhere on the globe. See also wiretap.

Webster's New World Telecom Dictionary Copyright © 2008 by Wiley Publishing, Inc., Indianapolis, Indiana.
Used by arrangement with John Wiley & Sons, Inc.

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