He predicted that attacks at Paris 2024 could be eight to ten times greater than those experienced in Tokyo.

"The war in Ukraine is accompanied by a cyberwar," Marie-Rose told Agence France Presse.

"The Olympics are one of the most attacked events in the world, it is the biggest nightmare for a head of technology,

"We are particularly afraid of state attacks."

An Integration Testing Laboratory (ITL) has opened at the headquarters of Paris 2024 cyber partners Atos Technology in Madrid.

It is designed to help protect all Olympic systems including the giant database in which results, data on competitors and other information is stored.

A staff of 60 are currently employed to begin testing on 150 applications critical to the Olympic and Paralympic Games.

It is expected that about 250,000 hours of tests will be carried out.

"With respect to intensity and discipline, the upcoming test operations resemble the training schedule of an elite sportsperson," Marie-Rose, a 1988 Olympic 4x100 metres relay bronze medallist, insisted. 

"Paris 2024 has every confidence in Atos' experience as a leader of such campaigns, not to mention the robustness of its technological capabilities."

From July, the tests will incorporate data from Paris 2024 Olympic and Paralympic qualifying events.

"At the Tokyo Games, we had 450 million attacks and 4.4 billion threats, or 800 per second," Atos chief integration officer for Paris 2024 Christophe Thivet said.

"But there was no impact on the Games, in the event of threats, we were able to block all flows before impact,”

For Paris 2024, the networks will handle all accreditations and portals for volunteers for the Games.

They will also supply the applications for voting during International Olympic Committee (IOC) meetings and for elections to the IOC Athletes' Commission.

Monitors have already noticed an increase in "phishing" as potential hackers try to find weaknesses in the systems.

The most serious instance of hacking at a recent Games came at the 2018 Winter Olympics in Pyeongchang.

The malware was dubbed "Olympic Destroyer," and systems were disrupted during the broadcast of the Opening Ceremony.

It later emerged that the culprits were members of the Russian military forces cyber unit who had attempted to disguise themselves as Chinese and North Korean hackers.

Members of the force were later charged by the United States Justice Department.