Operation Payback began in September 2010 after piracy activists retaliated against distributed-denial-of-service attacks reportedly commissioned by Bollywood companies from Aiplex Software against torrent sites. Using the Anonymous moniker, organizers redirected attacks toward the MPAA, IFPI, RIAA, British Phonographic Industry, anti-piracy law firms, and other copyright organizations. The attacks took the MPAA and IFPI websites offline for a combined 30 hours; by October 7, 2010, reported downtime across targets had reached 537.55 hours. Participants coordinated through IRC and imageboards, deploying a modified Low Orbit Ion Cannon with an IRC-controlled “Hive Mind” mode that made volunteer computers operate like a remotely directed botnet.
The operation escalated after companies including PayPal, Visa, MasterCard, Amazon, and PostFinance suspended or restricted services connected to WikiLeaks in December 2010. On December 8, coordinated attacks disrupted the Visa and MasterCard websites, while attacks against PayPal caused a minor slowdown. The campaign also produced collateral damage: a September 27 attack on Australia’s AFACT reportedly brought down 8,000 other sites sharing its server, and a breach of ACS:Law exposed a 350MB backup containing unencrypted records on thousands of people accused of copyright infringement. The FBI later executed 40 search warrants, and 13 alleged participants were indicted in federal court in October 2013; several ultimately received plea deals reducing felony charges to a misdemeanor and received jail or other penalties.