Microsoft accidentally posted a "test" upgrade for Windows 7 which seems to have a lot more malware in it than ordinary Windows. There is no way to tell just what it does.

Everyone makes mistakes, and I don't think this mistake constitutes a reason to condemn Microsoft in particular. (There are plenty of such reasons in things that Microsoft intentionally does, from making nonfree software to many malware functionalities.)

However, this does show that forced automatic unblockable updates, such as imposed in Windows 10, is not the security solution that people take it for.