Russian whistleblower Yuliya Stepanova has had the account that shows details of her location hacked, the World Anti-Doping Agency has confirmed.
Stepanova is in hiding after helping to expose Russian state-sponsored doping.
Wada, which had been alerted that its website had been hacked, found the 800m runner’s account had been accessed by someone other than the athlete.
“Wada is in contact with the relevant law enforcement authorities,” a statement said.
Wada’s Anti-Doping Administration & Management System (ADAMS) allows athletes to enter information about their whereabouts from anywhere in the world to help the agency co-ordinate testing.
“Through regular security monitoring of ADAMS, the agency noted that someone, other than Ms Stepanova, had accessed her account,” said the statement.
“A subsequent investigation allowed the agency to determine that no other athlete accounts on ADAMS have been accessed.”
Stepanova and her husband Vitaly, a former Russian anti-doping official, are currently living in a secret location following her evidence to Wada’s report into Russian doping.