The hacker group Anonymous said, following the Paris terrorist attacks, they will be targeting members of ISIS, and among tactics it plans to take — Rickrolling.

According to Bloomberg, Anonymous claims it took down more than 11,000 Twitter accounts connected to the Islamic State and that the group declared war against ISIS, saying it will track down members of the group on its @OpParisOfficial account — the Twitter account for Anonymous' campaign against ISIS.

“You should expect a massive reaction from Anonymous, you should know that we will find you and we won’t let go,” Anonymous said of Islamic State in a video posted online on Saturday. “We are going to launch the biggest operation ever against you. Expect numerous cyberattacks. The war is on. Get ready.”

Anonymous says it plans to Rickroll the terrorist group via social media by using ISIS hashtags to tweet links to Rick Astley's Never Gonna Give You Up.

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