It's all too easy to create new virtual machines. And many can end up dormant for days, weeks, months, and when they're spun back to life, for whatever reason, they're likely to be cluttered with un-patched software and operating system vulnerabilities. Oh yeah, they probably won't have anti-virus or anti-spyware updates, either, when they're awoken from their digital coma. In short, they're likely not compliant, and a big risk.
That's where the Offline Virtual Machine Services Tool can help, by applying updates to dormant images. It's available here for download.