The article is misleading, you can see the interview video here : https://www.journaldugeek.com/2020/05/21/xavier-niel-un-espion-au-service-des-renseignements-f

The article is misleading, you can see the interview video here : https://www.journaldugeek.com/2020/05/21/xavier-niel-un-espion-au-service-des-renseignements-francais/ https://www.journaldugeek.com/2020/05/21/xavier-niel-un-espi... (french) He says that he was not working for them, but instead after getting caught hacking a few things, he was noticed by the secret service, and after that he was informing them what he was finding. He says he was doing that for fun, and didnt pursue by working for them, because he is not a spy but an entrepreneur (and quite successful actually)