This isn't Moodle-specific but it relates to the server I host Moodle on, and I'm hoping that the community will be able to point me in the right direction.
Some suspicious files have showed back up on my server after I deleted them about a month ago. When I deleted them I also brought some outdated software up to current, so I thought that would keep it from happening again, but apparently not.
How can I find out where this is coming from, in order to plug the hole? Is there a good scanning program for this that is also free or very affordable (startup on a shoestring here)? Or is there something I could be looking for in log files?
Thank you!