Analyzing Solorigate, the compromised DLL file that started a sophisticated cyberattack, and how Microsoft Defender helps protect customers – Microsoft Security

We, along with the security industry and our partners, continue to investigate the extent of the Solorigate attack. While investigations are underway, we want to provide the defender community with intel to understand the scope and impact, remediation guidance, and detections and protections we have built as a result.

Source: Microsoft 365 Defender