Threat actors exploit SharePoint flaws to access internal systems, steal sensitive data, and carry out surveillance, impersonation, and extortion.

Microsoft is investigating whether a leak from its Microsoft Active Protections Program (MAPP) enabled Chinese state‑linked hackers to exploit a critical SharePoint server vulnerability before its pat

A cyber-espionage campaign centered on vulnerable versions of Microsoft's server software now involves the deployment of ransomware, Microsoft said in a late Wednesday blog post.