The "hacktivist" network known as Anonymous has stepped into the fray in the battle among legacy media companies, Internet firms, and politicians over the federal Stop Online Piracy Act (SOPA).
The controversial proposed legislation would make it more difficult for websites to display pirated content, but many tech companies -- including Google, Facebook, Twitter, Zynga, and others -- argue that it is overkill, and would unfairly restrict information-sharing.