There is an end user at my company whose machine has had multiple malware infections in a small amount of time.  Each time IT has reformatted the drive and, in one instance, given him an entirely new machine from the factory. We have scanned the user's data with multiple tools, and no malware is detected. Do you know of a good file/registry monitoring tool that can be automated to track items on a PC/laptop?  I know Microsoft has a filemon tool, but I believe that must be run manually.