The World Anti-Doping Agency (WADA) said on Wednesday that another batch of athlete data has been leaked by the same Russian cyber espionage group that published confidential medical data earlier this week.
This time, WADA said the hackers released data of 25 athletes from the United States, Germany, Britain, Czech Republic, Denmark, Poland, Romania, and Russia.
The hacking group, known as APT28 and Fancy Bear by U.S. cyber-security researchers, was also blamed by WADA on Tuesday for posting data about U.S. athletes Simone Biles, Elena Delle Donne, and Serena and Venus Williams.
"WADA is very mindful that this criminal attack, which to date has recklessly exposed personal data of 29 athletes, will be very distressing for the athletes that have been targeted; and cause apprehension for all athletes that were involved in the Rio 2016 Olympic Games," WADA Director General Olivier Niggli said in a statement.
WADA said it believed the hackers gained access to its anti-doping administration and management system (ADAMS) via an IOC-created account for the Rio Games.
According to WADA, the account includes confidential medical data such as Therapeutic Use Exemptions, which are issued by sports federations and national anti-doping organizations to allow athletes to take certain substances.
WADA said it is reaching out to the national anti-doping organizations and international federations whose athletes are impacted by the latest data release to provide support.
WADA also repeated its belief the attacks are being carried out as retaliation for the agency's investigations that exposed state-sponsored doping in Russia.
