Lesson learned?
Apparently not. The real lessons are that you need to stop running as admin and you need to stop running attachments.
If the assertion is that these viruses launch themselves, without the end-user's consent, in an ordinary user account and still manage to end up with full privileges, then I'm all ears. I suspect, however, that this is more a case of "admin runs attachment, system owned, film at 11". (Reminds me of something else I read here today. Oh I remember, it was that Linus quote about the surprise discovery that running arbitrary code as root is a bad idea.)
Anyway, MS apparently just don't get it. They've spent the last ten years trying to hide the "administrator" account but consistently made the ordinary user account a member of the administrators group. Er, hullo? Does *anyone* in Redmond still understand the NT security model?


