Russian computer hackers penetrated the World Anti-Doping Agency’s athlete database and publicly revealed private medical information about three of the United States’ most famous athletes.
The hackers published documents this week showing that Serena Williams, Venus Williams and Simone Biles received medical exemptions to use banned drugs.
The antidoping agency confirmed the authenticity of the documents in a statement Tuesday, attributing the hack to a Russian cyberespionage group called Tsar Team, also known as Fancy Bear.
“WADA deeply regrets this situation and is very conscious of the threat that it represents to athletes whose confidential information has been divulged through this criminal act,” Olivier Niggli, WADA’s director general, said Tuesday.