Multiple North Korean threat actors exploiting the TeamCity CVE-2023-42793 vulnerability

Since early October 2023, Microsoft has observed two North Korean nation-state threat actors – Diamond Sleet and Onyx Sleet – exploiting CVE-2023-42793, a remote-code execution vulnerability affecting multiple versions of JetBrains TeamCity server. TeamCity is a continuous integration/continuous...

Peach Sandstorm password spray campaigns enable intelligence collection at high-value targets

Since February 2023, Microsoft has observed password spray activity against thousands of organizations carried out by an actor we track as Peach Sandstorm HOLMIUM. Peach Sandstorm is an Iranian nation-state threat actor who has recently pursued organizations in the satellite, defense, and...