Plugin for whitelist OP permissions.

I´m looking for a plugin that I could use to secure my server, back in the day I was using one called Narguard that what it does is creating a file were I could write the names of the players that will have OP, if someone that was not in that list got OP someway, the server would automatically ban him.

I don´t know if there is something like that, I got hacked yesterday and I didn´t really lost anything, but they were giving some users OP and * permissions in luckperms, that´s something I want to avoid in the future.
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