Lumma Stealer operation hit 400,000 computers worldwide before coordinated takedown shut down Russian cybercrime kingpin.

Earlier this month, a coordinated disruption action targeting the Lumma malware-as-a-service (MaaS) information stealer operation seized thousands of domains, part of its infrastructure backbone worldwide.

The Lumma infostealer has become a popular way for hackers to steal sensitive data like banking information and cryptocurrency wallets.

A global cybercrime tool used to steal passwords and drain bank accounts was shut down in a major takedown led by Microsoft and federal authorities.The tool called Lumma Stealer had infected more than 394,