According to the Daily Beast, U.S. officials discovered an electronic meeting between more than 20 al Qaeda top leaders by following the Internet trail of an al Qaeda courier.
Exclusive: Courier Led U.S. to al Qaeda Internet Conference
It was that meeting that prompted the Obama administration to issue a massive terror alert, ordering the unprecedented closing of nearly two dozen U.S. embassies in the Mideast and North Africa earlier this month.
Josh Rogin is the Daily Beast reporter who broke this story.
Great bit of detective work there, people criticise the NSA monitoring too much data but thats just the price we have to pay to protect our freedom and lives
Mike – http://www.courier-insurance.co.uk