Joomla 1.5 user group questions

Does it affect the way joomla authenticate users if I add a custom user groups in the Joomla 1.5.15 and does it make it less secure?

I'm planning to add a custom group using the table jos_core_acl_aro_groups as described at http://docs.joomla.org/Custom_user_groups.

But someone told me that if I add a new user group and the group_id is greater than 25 (this is the ID of the Super Administrator), that new group will have the same access as the super admin in the default joomla core files without c开发者_StackOverflowhanging anything just the additional user group. Is this true?

Don't you have a local instsall of Joomla to try this?

Anyways, it's not true because it can't be, why should the group_id define the access rights? That would be a terrible ACL implementation. But please try it, before you actually use it live.

In Joomla 1.5 you can make user groups but they will have one of the existing role patterns. In Joomla 1.6 (alpha) there will be full flexibility in defining your groups, roles and granular ownership settings for each article, module, etc.

There are several extension you can find at: http://extensions.joomla.org/extensions/access-a-security

Which enhance the core ACL functions. Give them a look and you'll probably find the solution without hacking the core files.