Most SQL injections try to gain access to the jos_users database table. Once hackers have access to this file they have all your username and passwords, including super admin. Using a more random name can prevent a majority of database attacks.

If you are security savvy, this is something that you have already done during the Joomla installation process. If you didn't, and you are using Joomla 1.5, you can use the DB admin component to do this. If you are using Joomla 1.6 and didn't make the changes during installation, the process can still be done, but it's much more complicated. Full details can be found in the .

In other versions of Joomla, including Joomla 1.7, random table names are used during installation to fend off these types of attacks.