Hackers are trying to tarnish the U.S. Olympic team by releasing documents they claim show athletes including gymnast Simone Biles and tennis players Venus and Serena Williams used illegal substances during the Rio Games.
The medical files, allegedly from the World Anti-Doping Agency, were posted Tuesday on a site bearing the name of the hacking group Fancy Bears. Fancy Bear was also one of the hacking groups some security experts have blamed for the recent breach of the Democratic National Committee, which was carried out as far back as last year.
