Former NSA contractor admits stealing secrets in biggest security breach in US history

Published March 28, 2019 10:52pm ET



A former National Security Agency contractor pleaded guilty Thursday to stealing classified material over more than 20 years in what may be the largest breach of classified information in U.S. history.

Harold Thomas Martin III, 54, worked for several different companies from 1993 to 2016 that contracted with government agencies. He was given a security clearance to conduct his work, which allowed him to access top secret information.

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