On Tuesday it released documents known as Therapeutic Use Exemptions, or TUEs, which are issued by sports federations and national anti-doping organizations to allow athletes to take certain substances.
The leak of a TUE with information about Biles prompted her to disclose on Twitter that she has ADHD.
“I have ADHD and I have taken medicine for it since I was a kid,” Biles said. “Please know, I believe in clean sport, have always followed the rules, and will continue to do so as fair play is critical to sport and is very important to me.”
The International Olympic Committee (IOC), U.S. Anti-Doping Agency (USADA), International Tennis Federation (ITF) and USA Gymnastics all issued statements saying that athletes whose data had been released had done nothing wrong.
The IOC condemned the leak as an attempt to tarnish the reputation of clean athletes.
“The IOC can confirm, however, that the athletes mentioned did not violate any anti-doping rules during the Olympic Games Rio 2016,” the group said in a statement.
“In each of the situations, the athlete has done everything right in adhering to the global rules for obtaining permission to use a needed medication,” Travis Tygart, chief executive of USADA, said in a statement.
“The cyber-bullying of innocent athletes being engaged by these hackers is cowardly and despicable.”
ITF president David Haggerty said all TUEs handed out to tennis players were done so in accordance with WADA rules.
USA Gymnastics said that Biles was approved for a TUE exemption and had not broken any rules.
WADA’s chief, who apologised for the hack, said that it was “greatly compromising the effort by the global anti-doping community to re-establish trust in Russia”, following release of the McLaren Investigation Report.
The independent McLaren report charged that Russians had swapped positive doping samples for clean ones during the Sochi winter Games, with the support of the Russian secret service.
WADA revealed last month that Russian whistleblower Yulia Stepanova’s electronic account had been illegally accessed.
Stepanova, who is in hiding in North America, helped reveal the biggest state-backed doping programme in Russia and was forced to flee the country with her husband for fear of her life.
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