Originally Posted by psili

Don't know if it exists, but maybe for an added piece of mind:
- Take a recursive directory snapshot of known files you want / power your stuff.
- Every once in a while, take new snapshots and compare to the baseline.
- If there's a "new" file that looks amiss, research it.

Don't know if there's an automated solution that does that, and if so, unless it scans file contents, won't really help if someone's modified a pre-existing file.

Anyway. Just throwing my nonsense out there.