I wonder if anyone can help.
I have multiple errors coming from the same IP address in the log file for one of my sites. It looks like they are putting random letters and numbers after the page name such as page.php53182181, page.phpphpeab551bd etc.
Is there are reasonable explanation for this such as someone just messing around or should I be worried?
From what i understand this happens when a user and/or BOT visits trying to find a security hole in your files, i’ve had it happen on my site before but since all my files are 100% secure they were left dead in the water and banned from my server
Famous last words ? 
Sarcasm i hear, the CMS i use has a very proficient security backend so it bans anything that attempts to use a false string. Plus i use 100% secure servers and not once in the last 4 years has anything happened
Thank you for your help, SgtLegend. I have banned that IP address and will keep watching for errors.