The Guardian has reported that evidence gathered by special counsel Robert Mueller was acquired by Russians and leaked online in order "to discredit his inquiry into Moscow’s interference in US politics."
More than 1,000 files that Mueller’s office shared confidentially with attorneys for indicted Russian hackers were uploaded to a filesharing site.
A tweet from @HackingRedstone promoted the coup: “We’ve got access to the Special Counsel Mueller’s probe database as we hacked Russian server with info from the Russian troll case. You can view all the files Mueller had about the IRA and Russian collusion. Enjoy the reading!”
The tweet was posted last October, and on the same day, a reporter was offered leaked material via direct message.
The account that posted the material was registered from an IP address in Russia.
Mueller disclosed the leak during "his prosecution of Concord Management and Consulting, a Russian company that allegedly funded hacking operations by Russia’s notorious Internet Research Agency."