Tuesday, June 18, 2013
From The New York Times:
Gen. Keith B. Alexander, the head of the National Security Agency, said on Tuesday that American surveillance had helped prevent “potential terrorist events over 50 times since 9/11,” including at least 10 “homeland-based threats.” But he said that a vast majority must remain secret to avoid disclosing sources and methods.
. . .
Mr. Joyce described a plot to blow up the New York Stock Exchange by a Kansas City man, whom the agency was able to identify because he was in contact with “an extremist” in Yemen who was under surveillance. Mr. Joyce also talked about a San Diego man who planned to send financial support to a terrorist group in Somalia, and who was identified because the N.S.A. flagged his phone number as suspicious through its database of all domestic phone call logs, which was brought to light by Mr. Snowden’s disclosures.