Microsoft is probing whether a leak from its Microsoft Active Protections Program (MAPP)—an early warning system for cybersecurity partners—may have enabled Chinese hackers to exploit unpatched ...

In a blog post on Tuesday, Microsoft said two allegedly Chinese hacking groups, dubbed "Linen Typhoon" and "Violet Typhoon," were exploiting the weaknesses, along with a third, also based in China.

Using widely available technology, well-known ethical hackers Chris Kubecka and Paula Popovici quickly accessed numerous ...