Windows 10's end-of-support date is October 14, 2025. That's the day that most Windows 10 PCs will receive their last security update and the date when most people should find a way to move to Windows 11 to ensure that they stay secure.
As it has done for other stubbornly popular versions of Windows, though, Microsoft is offering a reprieve for those who want or need to stay on Windows 10: three additional years of security updates, provided to those who can pay for the Extended Security Updates (ESU) program.
An error as small as a single flipped memory bit is all it takes to expose a private key.
The vulnerability occurs when there are errors during the signature generation that takes place when a client and server are establishing a connection. It affects only keys using the RSA cryptographic algorithm, which the researchers found in roughly a third of the SSH signatures they examined. That translates to roughly 1 billion signatures out of the 3.2 billion signatures examined. Of the roughly 1 billion RSA signatures, about one in a million exposed the private key of the host.