Stealthy NSA Unit Intercepts Electronics to Plant Malware Says New … Last Updated on December 31, 2013 by deepcore … the NSA’s extensive surveillance techniques, which were laid bare when former NSA contractor Edward Snowden blew the whistle earlier this year. Leave a ReplyYou must be logged in to post a comment. Filed under: Snowden - @ December 31, 2013 7:39 am Tags: NSA, Snowden