Activist hacking group Anonymous have declared this Friday, December 11, a "trolling day" against the so-called terrorist group Islamic State (ISIS) as part of its cyber campaign against the militant Islamist group.
In an online message, Anonymous asked people to mock ISIS, or "Daesh" as it is also known in the West (a derogatory term for the group) online as part of its "Operation ISIS" campaign.
"We ask you to show your support and help against ISIS by joining us and trolling them // do not think you have to be part of Anonymous, anyone can do this and does not require special skills."
"We ask you to take part of this on Facebook // Twitter // Instagram // Youtube //In the "Real World," the post on file-sharing website Ghostbin added.
Hacker Group Anonymous Declares War on ISISNov. 20, 201501:54
Trolling is the term given to abuse, insults or threats made online with celebrities often being the targets of internet "trolls."
Anonymous asked them to use the Twitter hashtags #Daesh and #Daeshbags and post "mocking photos" of the group – such as posting picture of goats to ISIS members with captions talking about their wives, amongst other trolling tactics.
Related: Cyber War: What Can Anonymous Really Do to ISIS?
Known as "hacktivists," Anonymous is a collective of unknown hackers who have carried out various cyberattacks on governments and corporations. Following the Nov. 13 terrorist attacks in Paris in which 130 people died, the group declared "war" on ISIS and announced it would conduct "massive" cyberattacks on the group.
More from CNBC: 'Anonymous' hackers declare war on Islamic State"
Islamic State," or "IS" as it is also known, operates in parts of Syria and Iraq in its mission to establish a caliphate, but has recently orchestrated more attacks abroad, the latest being last month's attack on bars, restaurants and a concert hall venue in Paris.
A manhunt has begun in Europe to find those that helped the attackers, most of whom wore suicide belts. France retaliated at the weekend by launching more air strikes against IS positions in Syria.
In Anyonmous' latest video, the masked spokesperson says in French that "the French people are stronger than you and will come out of this atrocity even stronger," although the video was not on the group's official channel.
However, a tweet from the group's official Twitter account on Sunday said the group was at war with Daesh, (another name for Islamic State).
The hacker group rose to prominence after a series of cyberattacks against individuals, governments and organizations that it does not approve of, including PayPal, Mastercard and the Church of Scientology, among numerous others.
Follow CNBC's Holly Ellyatt on Twitter @HollyEllyatt. Follow CNBC on Twitter @CNBCWorld