The world governing body of track and field says it has become the victim of a cyberattack by a Russian hacking group linked to other incidents , including the hacking of the World Anti-Doping Agency and the U.S. Democratic Party . In an April 3 statement , the International Association of Athletics Federations ( IAAF ) attributed the attack to the Fancy Bear group . It said it believed the attack Attack.Databreach `` has compromised Attack.Databreach athletes ' Therapeutic Use Exemption ( TUE ) applications stored on IAAF servers '' during an unauthorized remote access Attack.Databreach to its network on February 21 . Fancy Bear began posting Attack.Databreach medical records of Olympians online last year , with U.S. and British athletes making up a large proportion of those targeted . Only selected records were released Attack.Databreach The IAAF said it contacted Context Information Security , a British security company , in January to undertake a technical investigation of its systems . The company says that investigation `` led to the discovery of a sophisticated intrusion . '' IAAF President Sebastian Coe said his organization will continue to do all it can to `` to remedy the situation and work with the world 's best organizations to create as safe an environment as we can . '' Fancy Bear gained widespread notoriety last year when cyber-researchers identified it and another group -- and they appeared to be linked to Russian intelligence services . They were also said to be behind the hack of the U.S. Democratic Party 's computer systems .