Microsoft said Wednesday that it broke down the Lumma Stealer malware project with the help of law enforcement officials across the globe.

The tech giant said in a blog post that its digital crimes unit discovered over 394,000 Windows computers were infected by the Lumma malware worldwide between March 16 through May 16.

The Lumma malware was a favorite hacking tool used by bad actors, Microsoft said in the post. Hackers used the malware to steal passwords, credit cards, bank accounts and cryptocurrency wallets.

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