Microsoft

Malicious AI Assistant Extensions Harvest LLM Chat Histories

Malicious AI browser extensions collected LLM chat histories and browsing data from platforms such as ChatGPT and DeepSeek. With nearly 900,000 installs and activity across more than 20,000 enterprise ...
Microsoft

Signed malware impersonating workplace apps deploys RMM backdoors

Signed malware backed by a stolen EV certificate deployed legitimate RMM tools to gain persistent access inside enterprise ...
Security Boulevard

Microsoft’s February Security Update of High-Risk Vulnerability Notice for Multiple Products

Overview On February 11, 2026, NSFOCUS CERT monitored Microsoft’s release of its February security update patches, addressing 59 security issues across widely used products such as Windows, Azure, ...