Anonymous from all over the world will hunt you down. You should know that we will find you and we will not let you go. We will launch the biggest operation ever against you. Expect massive cyber attacks. War is declared. Get prepared. The French people are stronger than you and will come out of this atrocity even stronger.
Anonymous, as quoted in "Anonymous declares war on Islamic State after Paris attacks in chilling video: 'We will hunt you down'", The Mirror (16 November 2015)