AP has a good article about yesterday’s “Patch Tuesday” updates from Microsoft. Microsoft releases almost all updates on one day each month — the 2nd Tuesday of the month.
This time, there were 6 crifical updates, including one for the “malicious software engine” that powers Windows Defender, including on Vista.
What kind of problem? The usual — a flaw that could let the attacker take over the whole computer! In the anti-malware program, no less…
If you haven’t done your Microsoft Updates, do them now. IF you’re still using Windows Updates, start Windows Updates manually, then click on the option on the right-hand side of the screen to upgrade to Microsoft Updates.
Microsoft Updates will update Windows, Word, Excel, Powerpoint and other Microsoft programs — all in one step. Windows Updates only handled Windows — you had to go to other places at microsoft.com to get the other updates.

[...] Vista’s Not Immune Microsoft released updates yesterday that included a security fix to prevent attackers gaining control over your Vista computer. Read more in my article Windows Security Updates Fix Vista Issue, too [...]