Operation Payback began in September 2010 after piracy activists retaliated against distributed-denial-of-service attacks reportedly commissioned by Bollywood companies and carried out by Aiplex Software against torrent sites. The campaign then targeted the MPAA, RIAA, IFPI, British Phonographic Industry, copyright law firms, and other opponents of online piracy. Participants used a modified Low Orbit Ion Cannon, including an IRC-controlled “Hive Mind” mode, to coordinate large numbers of computers. The attacks temporarily took the MPAA and IFPI sites offline for roughly 30 hours; a September 27 attack on AFACT also unintentionally disrupted about 8,000 unrelated websites sharing its server.
After WikiLeaks’ December 2010 diplomatic-cable disclosures, Operation Payback expanded into political retaliation against Amazon, PayPal, Visa, MasterCard, PostFinance, and others that had suspended services or donations connected to WikiLeaks. A coordinated attack on December 8 temporarily brought down the Visa and MasterCard websites, while PayPal experienced a minor slowdown. WikiLeaks spokesman Kristinn Hrafnsson denied directing or endorsing the attacks. The FBI and other authorities pursued participants: five people were arrested in U.K. raids on January 27, 2011, 14 Operation Avenge Assange members were arrested in July 2011, and 13 alleged Operation Payback participants were indicted in Virginia in October 2013. Several later accepted misdemeanor plea deals and received jail or community-service penalties.