On a website I have, I do a nightly CRON job to see which of my files have been modified and then back them up to a different server. Yesterday, I saw that a bunch of my .htacess files were "modified". I put modified in quotes because they were definitely re-saved as per the modification date. However, upon inspecting them, none of them were actually changed. Is there any reason for this behavior on the end of my hosting provider for example? Or, is this an indication that my site may have been compromised?

Thank you for your input!