The Anonymous collective has also reacted very quickly to the attacks that took place in the French capital . The next morning , a video was put online, directly declaring ( cyber ) war Daesh and EI . Everything is there, staging worthy of the biggest blockbusters , voice synthesis and especially about very significant. According to their words: ' These attacks can not go unpunished , which is why the anonymous world will hunt you down ' and the voice goes on to say ' we will launch the biggest operation ever undertaken against you. Expect many, many cyber attacks ' . Anonymous had already reacted following the attacks of January 2015 by publishing some 9200 accounts related Tweeter according Daesh them . A threat to be taken seriously .