Global hackers’ group Anonymous has declared a cyber war against the Islamic State, after attacks in Paris left 129 people dead and hundreds more injured on Friday.

“These attacks cannot remain unpunished,” someone in a Guy Fawkes mask says in French in video posted by the group to YouTube on Monday.

Describing members of the Islamic State as “vermin that kill poor innocents,” the Anonymous member said the hackers would track down members of the extremist group.

“We will launch the biggest operation ever against you. Expect many cyber attacks. War has been declared. Get ready,” the spokesperson said.

The video had attracted more than 1.1 million views by 9:30 a.m. on Monday, Reuters reported.

On Twitter, Anonymous clarified that it has “been at war for quite some time already” with the Islamic State. Anonymous activists targeted the group after the Charlie Hebdo attacks in Paris last year and have published lists of Twitter accounts sympathetic to IS with the goal of having them suspended.

“The French people are stronger than anything and will recover from this atrocity even stronger, know that,” the Anonymous member said in the video.

“We don’t forgive, we don’t forget.”

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