9. Operation Didgeridie

Date: September 9, 2009
Victim: Austrailian government 

In 2007, Stephen Michael Conroy, the Minister for Broadband, Communications, and Digital Economy for Australia, went on a crusade to censor the Internet to block malicious content which included child pornography, but wound up encompassing any website that displayed sex, drugs, or violence. In protest, Anonymous used a denial of service attack to take the Prime Minister's website offline for about an hour.