Russian Internet companies also have been asked to provide information on users of social networks and online money-transfer services. Because terror is not when they get everyone all at once, but when they can get anyone at any moment for any reason, Timchenko said in an interview with The Associated Press. Several opposition websites accused of extremism have been blocked altogether, including that of former world chess champion Garry Kasparov, a harsh critic of Putin now in exile. "When the law came into force and Alexei Navalny's blog was blocked for the first time, we decided to get around the ban legally by creating various mirror sites of the blog," said Ruslan Leviev, an active blogger and opposition activist who has also monitored the conflict in Ukraine and Russia's military presence in Syria. In what has been dubbed a "hybrid war," new websites and social media accounts were set up to flood the Internet with information, blurring the lines between reality and fiction. "Everyone was surprised how quickly the Kremlin changed tactics with this conflict," said Andrei Soldatov, the other co-author of "The Red Web," who has studied the Internet and the Russian security services for more than a decade. Russian soldiers posted accounts of the fighting in eastern Ukraine that contradicted Kremlin denials that troops had been sent to support the separatists, and relatives wrote posts about funerals of Russian servicemen who had died fighting there.