Thread:Project:Support desk/How to insert some template to article which can be deleted only by administrator/reply (6)

I do not know of security holes like XSS or data leackage or such. However, if with security hole you also mean that it really is absolurely imposible to modify the texts inside protect tags, then I am not so sure. As said, it's only a hack, the last version is years old; there may be ways to get around this kind of protection.