I have Norton AntiVirus protection which I update and then
scan the disk every week besides getting the Virus
Definitions updated automatically during the week.

I also have Lavasoft Adaware software that I run
periodically to root out Spyware.

I don't think it's the canned/preprogrammed malware
(viruses/spyware) that's being addressed with Windows
Critical Updates. I think it's the threat of real-time
hackers that's being addressed to prevent them from
establishing live malicious access to your computer.
Isn't it?