Hacking collective Anonymous has declared war on Islamic State terrorists following Friday’s gun and bomb attacks on the French capital which left over 130 people dead.

In a video statement posted online a French member of the group is seen shrouded in a Guy Fawkes mask whilst declaring war on the terror group.

The man says: “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 has gained notoriety for its targeted cyber attacks ranged against diverse targets including Scientology, the KKK and the websites of national governments.

The video has not yet been posted on the group’s YouTube channel however.