The unprecedented global cyberattack affected "more than 75,000 victims" in dozens of countries, French police said in a statement on Sunday, the day after the ransomware hit Russia's banks, British hospitals and European car factories among others.
"This is a provisional figure of the number of infected computers and could rise significantly over the coming days," Valerie Maldonado, deputy head of the French police's anti- Cybercrime Office told. Europol described Friday's cyberattack as "unprecedented".
The attacks used ransomware, which locks users' files unless they pay the attackers a designated sum in the virtual Bitcoin currency.
Images appeared on victims' screens demanding payment of $300 in Bitcoin, saying: "Ooops, your files have been encrypted!"