virtualbox.org

I've noticed that when I have my vbox/windows image open and my last used application, the OSX screen saver and log on does not get enabled. I can even close my laptop, then open it, and it does not require me to log back on - it simply brings me back to the vbox/windows app I was last in. I have a concern about this apparent security gap.

Any way to ensure that the OSX screensaver gets enabled or the log on option gets enabled properly?