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.

Microsoft is investigating whether a leak from its early alert system for cybersecurity companies allowed Chinese hackers to ...