Think about it. World class competition. Young person talking to friends about something off color or just young and stupid. Leak it. Mental edge and concentration gone. And that is the least harmful thing I can think of.
Diplomats are protected by the Vienna Convention -- although in practise, I assume many take significant precautions. They must protect against ordinary loss and theft anyway.
A successful or otherwise interestingly profiled athlete in Olympics will have recurring contacts with sports (and lifestyle) beat journalists. They in turn will have contact with their peers working their respective beats.
So with just two degrees of separation from an athlete, you have a high chance to get direct access to political reporters and their contacts. Add device-to-device no-interaction exploits and you're well set at harvesting a whole lot of material.