If I remember correctly, the mod doesn't show up because it's a coremod. Look in your latest.log file and check if there are any exceptions thrown like this: https://justpaste.it/1slyc
If you're still unsure, I recommend creating a server and adding ezProtector (https://github.com/DoNotSpamPls/eZProtector/releases) and checking if it detects your mods.
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Thank you for your reply.
I testet it on a forge server and the blacklistet mods didn't show up in the console. I will check eZProtector later.
Is it possible for a mod to check what mods are active or even worse, scan the "mods" directory for other mods? The server I'd like to use the bypasser has its own mod that provides auto-commands and such, but I don't know if it would be able to detect other mods like minimap