HELP! Private Members Names Showing Up With Activity in Google Search

HELP! This is really an issue for my Membership website.

I am using Business Portfolio Theme with Membership and BuddyPress plugins.

This is an extremely sensitive support site for women.

But, if you google the site name and any members name google shows an excerpt of their last activity, forums or their profile.

How can this happen with a private membership site with protected pages?

How can I stop this?