So, Microsoft have released a handy utility that creates a bootable CD or USB with a virus scanner on it, and anybody is allowed to use it.
Since work forces us to run Symantec Endpoint (basically the corporate version of Norton), and previously forced us to run McAfee, I figured I'd run this CD and see what happened:
The second one is a
keylogger from 2010 and the third one is
spyware from 2009. Neither McAfee or Symantec ever noticed these.