The accusations from Niggli come after the email address and Anti-Doping Administration & Management System (ADAMS) online whereabouts account of whistleblower Yuliya Stepanova, who helped reveal the extent of doping in her native Russia, were hacked.

It was concluded that someone was trying to get hold of her location after she and husband Vitaly Stepanov sought refuge away from Russia, where they have been ostracised and labelled as traitors.

WADA then took steps to block Stepanova’s account to prevent another similar hacking attempt after she had claimed she had feared for her life as a result of the incident.

“We are taking every measure possible [to protect ourselves],” Stepanova, an 800 metres runner who competed at the European Championships but was barred from taking part at Rio 2016, said following the attack.

“We are very worried about our safety because we have a small child.”

During the Olympics, which concluded with the Closing Ceremony on August 21, the International Weightlifting Federation website was hacked by Iranians after a controversial no lift decision spelled the end of the medal hopes of Behdad Salimikordasiabi.