Microsoft Visual Studio is a tool tracked across 3 threat clusters and 5 intelligence report mentions on ThreatCluster. First observed November 4, 2025; most recent activity December 2, 2025.
In July 2025, Microsoft discovered a new backdoor named SesameOp that exploits the OpenAI Assistants API for command-and-control operations. This malware allows attackers to remotely access and manage compromised…
The Open VSX registry faced a supply chain attack after access tokens were leaked, allowing threat actors to publish malicious extensions. The GlassWorm malware campaign has returned with new extensions targeting…
Microsoft's Detection and Response Team (DART) discovered a new backdoor malware named SesameOp, which utilizes the OpenAI Assistants API for command-and-control (C2) communications. This malware allows attackers to…