Operation ISIS, commonly known by the hashtag #OpISIS, refers to a wide-reaching hacktivist campaign launched by the collective Anonymous against the Islamic State. Gaining significant momentum in 2015 following the Charlie Hebdo and Paris attacks, the campaign aimed to dismantle ISIS's online recruitment and propaganda machine by hijacking Twitter accounts, taking down websites, and leaking data. The memes associated with #OpISIS often blend the serious nature of cyber warfare with the internet's unique brand of psychological warfare, famously including 'Rickrolling' extremist accounts or flooding their hashtags with images of anime or ducks. Today, the template serves as a symbol of decentralized collective action and the power of digital counter-narratives.