Another Nulled Question

Hi guys,

Sorry if this has already been asked but what are the con's to using a Nulled version of IP.Board?Obviouslyits free and you can dowhat ever you like with itbut are there any security risks involved by using them and is it possible to rectify these.Are passes by going to notice its Nulled in anyway? and will a nulled version give people more freedom to exploit the whole site in general.

Thanks in advance