Internet hacking savants under the name "Anonynous (Anon)" disabled multiple government and corporate websites including the Department of Justice, the FBI, Universal Music and more Thursday in retaliation to the FBI shutting down MegaUpload.com, a file sharing website accused of hosting pirated materials.

Hacking group Anonymous said Thursday it knocked out the websites of the FBI, U.S. Department of Justice, the Recording Industry of America, Motion Picture Association of America and Universal Music as retribution for anti-piracy efforts by the government and private industry.

In the past, Anonymous has gone after opponents of Occupy Wall Street and WikiLeaks, but starting with the new year, the group has focused on executives who support the legislation known as SOPA, or the Stop Online Piracy Act.