Hacktivist group Anonymous has managed to take down more than 3,800 ISIS Twitter accounts in the wake of the Paris attacks.
Accounts linked to members and associates of the terror group are being flagged up to officials and deleted.
Anonymous has created an official Twitter account for the #OpParis operation.
The group wants to ‘unite humanity’ in an effort to bring Isis down after militants took the lives of 129 people on Friday.
While it is easy for members of Isis to set up a new Twitter account, it is hoped the action will cause disruption for the terror group.
Accounts can be hard to find, so each time an account is suspended, the number of followers a person has is likely to be diminished.
In the video posted earlier, the member of Anonymous says: ‘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.’