Microsoft took over 50 domains used by threat actors known as Thallium, which the company says are operating from North Korea.
Microsoft patched CVE-2019-1458 in Windows, a privilege escalation bug that is being used in active attacks.
BlueKeep exploits have been seen installing a cryptominer, but Microsoft is warning customers that more damaging attacks could be coming.
The Russian attack group known as fancy Bear has been targeting anti-doping and sports organizations in advance of the 2020 Summer Olympics.
Microsoft's Secured-core PC initiative is a partnership with OEM partners (including HP and Dell), silicon vendors (such as Intel, AMD, and Qualcomm) to provide deeply integrated hardware, firmware and software that can withstand firmware-based attacks.