I had an interesting question posed to me the other day: How would you know if your PC was affected by the IE7 flaw?
My first answer was: Hmm.. It is very possible that you won't know.
Then I did some digging.. The answers I found were:
But the best answer was the most obvious one: Have your AV signatures up to date there is a possibility it will catch this (depending on who your AV vendor is).
I hope this helps someone,
Dave.