URL hacking in symfony admin generator

In symfony's admin generator, I can choose, for instance, to disable the delete 开发者_如何学JAVAand edit actions in generator.yml

Could a user change the URL and still access those functions, or should I also disable them in security.yml ?

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Obviosly, if you disable them in config, they will not work in any way unless you enable them again. Fabien is not stupid ;)