Russia's next election attack hard to predict, spy-catcher says

National security agencies are certain Russia will try to influence future elections, but they don’t know how to stop it, according to the head of U.S. counterintelligence.While Russia exploited social-media networks such as Facebook and Twitter last year, agencies are struggling to predict what methods and technology Moscow will use in 2018 and beyond, according to William Evanina, director of the National Counterintelligence and Security Center.“We have to understand what the capab