Rafael Nadal, Mo Farah and Justin Rose are among the latest Olympians whose confidential medical records were leaked by a Russian cyber espionage group on Monday.
The World Anti-Doping Agency last week revealed it has been hacked by the group known as Fancy Bears, who obtained illegal access to the organisation's database.
Details of athletes granted therapeutic use exemptions, enabling competitors to use medications for legitimate reasons, have been listed by the hackers on the group's website.
Fourteen-time grand slam champion Nadal, Farah, who defended his 5000m and 10,000m titles on the track in Rio last month, and Olympic golf champion Rose are three of the high profile athletes to have had medical data disclosed online.
Rower Helen Glover, a two-time Olympic champion, 800m silver medal winner Francine Niyonsaba, swimmers Laszlo Cseh and Connor Jaeger, as well as fencing gold medal winner Gauthier Grumier are also among the latest batch of 26 athletes to have been targeted by the hackers.
Serena and Venus Williams were listed in the first leak of confidential records along with gymnastics sensation Simone Biles.
There is no evidence of any wrongdoing by the athletes involved.