Mark Elliot Zuckerberg

Harvard students Cameron Winklevoss, Tyler Winklevoss, and Divya Narendra accused Zuckerberg of intentionally making them believe he would help them build a social network called HarvardConnection.com (later called ConnectU). They filed a lawsuit in 2004 but it was dismissed on a technicality on March 28, 2007. It was refiled soon thereafter in federal court in Boston. Facebook counter sued in regards to Social Butterfly, a project put out by The Winklevoss Chang Group, an alleged partnership between ConnectU and i2hub. On June 25, 2008, the case settled and Facebook agreed to transfer over 1.2 million common shares and pay $20 million in cash.
In November 2007, confidential court documents were posted on the website of 02138, a magazine that catered to Harvard alumni. They included Zuckerberg's social security number, his parents' home address, and his girlfriend's address. Facebook filed to have the documents removed, but the judge ruled in favor of 02138.
• Saverin lawsuit
A lawsuit filed by Eduardo Saverin against Facebook and Zuckerberg was settled out of court. Though terms of the settlement were sealed, the company affirmed Saverin's title as co-founder of Facebook. Saverin signed a non-disclosure contract after the settlement.