Microsoft has confirmed that it signed a driver containing malware, although it stressed the limited real-world security impact.
SOURCE: https://www.engadget.com/microsoft-signed-netfilter-malware-driver-164228266.html?src=rss_b2c
SOURCE: https://www.engadget.com/microsoft-signed-netfilter-malware-driver-164228266.html?src=rss_b2c