random dude banned owner

[Karwendler]

so a random guy called _dudle_ or smth like that joined my server, after some time he dropped a book infront of me... my dumb self obviously picked it up and scroll to the second page, as soon as i did i ggot banned and the last thing i saw in the chat as ive been getting kicke out was the message that he made himself op aswell... help pls

[_Tarna_]

If the server was set to creative, players can give themselves items from their saved hotbar slots. And with books, you can do this thing where when someone with perms turns to a page, it makes the player execute a command. And they probably made you op them with it.