Membership Plugin

Strangely there was no choice for the "Membership Premium" plugin which is what I need help with, so I picked the first of the related plugins that were there for the purposes of the required field.

I found a significant "hole" in the membership plugin. It does not protect the RSS feed, so anyone who knows a little about these things can easily side step the membership aspect and have complete and free access to all of the content by simply going into Google Reader and adding a subscription manually by using the full URL with "/feed" at the end. I have tried deleting some of the feed files and my site crashes

Anyone know of any way to protect the RSS feeds?