I was looking for DiskImageMounter.app, and when I found it, it was in the same directory as an app called ThermalTrap.app. My education caused me to take an interest in an app so-named. Search (Duckduckgo) let me to a page that suggests I have been "rooted." Since the app is apparently not mentioned in these forums, and I have no relationship with anyone on the site that says I've been "rooted," I thought to ask users of this site, some of whom I know I can trust. Is this a legitimate app, part of OS X, in which case I need not worry that it is located at /System/Library/CoreServices/ ? Or should I worry?