Protected content not protected! :0

Hi there! I put WPMU DEV Dashboard as the plugin with problems because the Protected content plugin is not showing up in the choices.

Got this email this morning regarding the membership site. Sounds like we have a problem with the protected content plugin?

"Good morning. We wanted to let you know that through Google we found some articles that we believe are intended to be private on the SecurityDirectors.net website. In addition to a bunch of articles we also were able to pretty easily find the Membership Directory which we doubt was intended: http://securitydirectors.net/membership-directory/

The two main issues I see is anything you want private should have a special tag from your web designer called "no-index, no-follow" that will keep it from ending up on Google. The other issue is your 404 Page Not Found design has links to everything so anyone can type in gibberish after securitydirectors.net/ and find all sorts of private information:
http://securitydirectors.net/anythingtheywant"

Thanks!