After ISIS took responsibility for shocking terrorist attacks in Paris, on November 13th 2015, the infamous hacktivist group Anonymous announced a war against Islamic State. In this chilling video, that was uploaded on Youtube, Anonymous claims that “they will hunt ISIS down as a revenge for Paris attacks.”
We will find you and we will not let you go. We will launch the biggest operation ever undertaken against shootings. Expect many cyber attacks, war is triggered
— Anonymous (@GroupAnon) November 15, 2015
The similar threats were made by the hacktivist group after the Charlie Hebdo attacks in January, which was targeting French journalists.
They have already published a list of Twitter accounts belonging to ISIS members and you can see them on this link: Pastebin