Even as warplanes flown by the U.S. and its allies try to dislodge Islamic State militants from Iraq and Syria, a less visible battle is under way in remote corners of the Internet.
Since the terrorist group emerged as a powerful military force, its adherents have proven skilled at using secure communication channels to plan operations and recruit new fighters via the Web. That has spurred intelligence agencies to step up efforts to break encryption codes, pose as would-be terrorists online, and deploy old-fashioned spies to gather information about their digital strategy, security experts say.
http://www.bloomberg.com/news/2014-10-15/how-anti-is-spies-fight-terrorism-with-digital-tools.html
