July 1, 2025

Jasper Sleet: North Korean remote IT workers’ evolving tactics to infiltrate organizations

Since 2024, Microsoft Threat Intelligence has observed remote information technology (IT) workers deployed by North Korea leveraging AI to improve the scale and sophistication of their […]
May 22, 2025

Lumma Stealer: Breaking down the delivery techniques and capabilities of a prolific infostealer

Over the past year, Microsoft observed the persistent growth and operational sophistication of Lumma Stealer, an infostealer malware used by multiple financially motivated threat actors to […]