Cryptome.org, John Young's secret-leaking site that preceded Wikileaks by more than a decade, was hacked over the weekend: defaced, and all files deleted.
Young is nothing if not prepared and paranoid, so there were backups and the site has since been restored.
Wired spoke to the individuals claiming responsibility. They apparently sought and obtained info on the "Wikileaks Insider" who's been spilling internal Wikileaks dirt to Cryptome. The recent Cryptome intrustion may have exposed the identities of whistleblowers and other confidential sources.