To summarize my question a bit more, I am looking for a way to find out when a third-party module is required, and what script it is required from. Do you guys have any ideas, and is there any service that does this? I am looking for this because of a backdooring issue.
Thank you and have a great day 
Use CTRL+SHIFT+F and enter “require” or “getfenv”
That’s not really what I’m looking for. I’m seeing if there is an event that Roblox fires whenever a third party module is required.
No. There is not a single event that does this.
I guess it’s disappointing, but thank you for your answer
Assuming the script isn’t obfuscated, you just have to find the asset ID of the module being required and stick it at the end of https://roblox.com/library/.
You could try using getfenv(2), it will return a table including the script instance of where the module was required from. But that only works if you can edit the module in some way.