Anonymous, the murky global and leaderless hacking group has struck out on a campaign to disrupt ISIS’ sophisticated use of the Internet and social media. It claims to have disabled over 11,000 identified ISIS Twitter accounts with looped Rick Astley videos. For those of you not familiar with Rick Astley, he was a 1980’s British pop star of limited talent, whose videos are sometimes painful to watch. For unknown reasons, Astley’s videos have been used in a variety of online pranks and hacking incidents. So Anonymous did the convenient thing and used old Astley videos, a tactic now known as “RickRolling”, to disrupt and confound ISIS Twitter and other social media accounts. I like it. Striking back in this way is probably causing smiles in the French Intelligence Service, U.S. Defense Department, NSA, and GCHQ in the UK.