The hackers' collective "Anonymous" has vowed to carry out revenge against the terrorist group Daesh (ISIL/ISIS) for its attacks in the Belgian capital that left at least 31 people dead and around 300 injured.

"Anonymous", an anarchist-leaning global syndicate of hackers involved in anti-authoritarian and ostensibly human rights-oriented online vigilante activity, has said it will "strike back" at the terrorist group Daesh in response to the attacks in Brussels which transpired on Tuesday.

A representative of the group appeared in a Youtube video wearing a Guy Fawkes mask; he used an electronically-disguised voice to address his audience. He explained that the collective had previously exacted revenge on the terrorists after the Paris attacks in November.

"We have fought daily against terrorism and we have silenced thousands of Twitter accounts directly linked to ISIS (Daesh)."

"We severely punished Daesh on the darknet, hacked their electronic portfolio, and stole money from the terrorists."

"We have laid siege to your propaganda websites, tested them with our cyber attacks."

Anonymous Belgium threatens ISIS following attack on 3/22/2016 & asks to stand against discrimination https://t.co/4hbtGIJLPZ via @YouTube — mclozano1111 (@mclozano1111) 23 марта 2016 г.

​The group asked internet users to join their efforts to cripple the terrorist group, not only on the internet, but socially, too.

"Everyone can contribute to our efforts and we invite you to fight with us, you will find a link with this video which will indicate how."

These methods include hacking their websites, shutting down their Twitter accounts, and stealing their bitcoins, Anonymous said.

"But you don't have to hack them," they added, and also urged people to consider the conditions in which the terrorist group recruits followers.

"The Islamic State (Daesh) cannot recruit Muslims in Europe if they are accepted and included in the society. So we want all of you to stand together against discrimination," they said.

In the last few weeks, the group has also taken on more controversial targets, such as Republican presidential election frontrunner Donald Trump and Brazilian President Dilma Rousseff.