Security Guidance: Verify Unusual Internal Messages

Updates to Domainname API
Some updates to our domainname API will make it more flexible and make it easier and faster to get the complete dataset.
https://isc.sans.edu/diary/Updates%20to%20Domainname%20API/32452
Microsoft Teams Impersonation and Spoofing Vulnerabilities
Checkpoint released details about recently patched spoofing and impersonation vulnerabilities in Microsoft Teams
https://research.checkpoint.com/2025/microsoft-teams-impersonation-and-spoofing-vulnerabilities-exposed/
NViso Report: VSHELL
NViso published an amazingly detailed report describing the remote control implant VSHELL. The report includes details about the inner workings of the tool as well as detection ideas.
https://www.nviso.eu/blog/nviso-analyzes-vshell-post-exploitation-tool