They probably have more data than what they can process. The best they can do so far, in terms of prevention, is stopping the incredibly dumb: <a href="http:&#x2F;&#x2F;www.theguardian.com&#x2F;world&#x2F;2015&#x2F;nov&#x2F;11&#x2F;france-says-toulon-naval-base-attack-foiled-with-arrest-of-jihadist" rel="nofollow">http:&#x2F;&#x2F;www.theguardian.com&#x2F;world&#x2F;2015&#x2F;nov&#x2F;11&#x2F;france-says-tou...</a>