Microsoft Threat Intelligence observed the persistent growth and operational sophistication of Lumma Stealer, an info-stealing malware used by multiple financially motivated threat actors to target various industries.

US, European, and Japanese authorities, along with tech companies including Microsoft and Cloudflare, say they’ve disrupted Lumma, an infostealer popular with criminal gangs.

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.