Modern PCs that shipped with Windows 10 or Windows 11 have a feature called Secure Boot enabled by default. It keeps your system secure, but you may need to disable Secure Boot to run certain versions of Linux and older versions of Windows. Here’s how to see if Secure Boot is enabled on your PC.
Microsoft has confirmed that two recently reported zero-day vulnerabilities in Microsoft Exchange Server 2013, 2016, and 2019 are being exploited in the wild.