Joomla! takes security very seriously and is extremely proactive about fixing any issues that may arise. That doesn't mean that there isn't more you can do for your Joomla! website to protect it. Using SSL, you can enable a few features already built-in to Joomla! and protect from some easy exploits that may be taken against your site and users users. Better yet, SSL can be used for other features you may not even know about.