The whistleblower website WikiLeaks came under attack late Tuesday after reportedly releasing thousands of secret diplomatic cables containing the names of confidential sources and agents. The group tweeted: “WikiLeaks.org is presently under attack,” after the organization’s website crashed. An hour later the site and the cables posted there were inaccessible. Last week, the German newspaper Der Freitag reported potentially dangerous cables released by WikiLeaks have been floating around the internet for months because of a rift between WikiLeaks founder Julian Assange and his former trusted lieutenant, Daniel Domscheit-Berg. The documents allegedly include the names of suspected agents in Israel, Jordan, Iran and Afghanistan.