SAINT-DENIS, France (AP) — Just like the Olympic athletes, the cyberwarriors that will be crucial for the success of the Paris Games are deep into training for the big event.

They have turned to friendly hackers to probe their cyberdefenses, like boxers who use sparring partners to ready them for a championship fight. They have studied and analyzed the strengths, tactics and weaknesses of their opponents. Those could be anyone from teenage showoffs and ransomware gangs to Russian military hackers with a track record of malicious cyberattacks.

But unlike the 10,500 Olympians who will converge on France’s capital in July, the cybersecurity engineers behind the Games are hoping to stay out of the spotlight. For them, the equivalent of a medal will be getting through the Olympics – and Paralympics – without a major incident. It would mean that their layers of digital defenses stand up to attempts to paralyze computer and information systems vital for the Games.