Anonymous is calling on social media users to troll or harass Islamic State via Twitter, Facebook, Instagram and YouTube. The hactivist group is urging global users to post mocking photos or videos and use specific hashtags on December 11.

THE hacker collective Anonymous claims to have foiled an ISIS terror plot in Italy while spying on the terror network’s communications.

The group made the claim in a series of tweets from its account opened after the Paris attacks in November.

It comes weeks after the group issued a rallying call for those that want to join its cause.

In a video posted to YouTube, an Anonymous member wearing the group’s signature Guy Fawkes mask, speaks about the group’s chaotic, leaderless structure.

“Anonymous is not an organisation, it is not a club, a party or even a movement. There is no charter, no manifest, no membership fees. All we are is people who travel together,” he says.

“We come from all racers, countries and ethnicities. We are many, we are your neighbours, your co-workers, your hairdressers, your bus drivers and your network administrators. We are the guy on the street with the suitcase. We are the girl in the bar you are trying to chat up. We are Anonymous.”

In this month we are working in silence. We have already foiled 1 attack #ISIS against #Italy, we hope to block others. #OpParis #Anonymous — #OpParis (@OpParisOfficial) December 25, 2015

We're digging your graves, we have found you, we are in your accounts & phones the nightmare is about to begin. #ISIS will implode! #OpParis — #OpParis (@OpParisOfficial) December 26, 2015

#OpParis is still working against #ISIS shit. We are making a system to take down 1000 accounts each day. We will cure their mental illness. — #OpParis (@OpParisOfficial) December 17, 2015

Traditionally, Anonymous opposes government control and surveillance, but it has also pledged to take on ISIS following the Paris attacks.

The video also suggests tips to make contact with other Anonymous members and how to guard privacy online.

It suggests creating a separate email account and pseudonym before joining social networks like Facebook and Twitter. It even recommends using a separate browser for Anonymous activities.

At the end of the video, the speaker says, “We are more than you think. We are more than anybody thinks. We are many. And you are now one of us. Welcome to Anonymous.”