randomians

Should i be worried that someone named by "Mod" was on my server like will any moderators from Minehut come to my server and disappear or was t the act of my plugin bugging out I don't have evidence but all I know is that it gone on my server and quickly left and so I shut down my server I'm new to encountering these issues Plugins: Matrix anti-cheat Ultimate Moderation Staff+ Essentials Grief Prevention and i literally got jump scared