After I learned about Vista’s security when it was yet to be released, I couldn’t but admit that MS was serious about the security, which was the most attractive aspect of Vista for me and, yes, MS haven’t spared their efforts on this side with Windows 7. Of course, as the most targeted OS, I think it’s their responsibility especially when they want their OS to be used in businesses as well, though. The toughest part for them is to keep the balance between usability and serious security, with which most of security software companies would agree.
While their loud marketing campaign may be going to silently remove some possible future choices from people but I don’t think they take the security issue lightly especially when they seriously think about keeping their share.