Prevent access to OG private posts except to privileged users and OG group members.
This module serves to ensure that OG private posts remain private to the Organic Group(s) to which they're posted, regardless of which other modules may be trying to grant access.
Organic Groups usually does a fine job of ensuring that group posts marked "private" will only be accessible by group members. But other access-control modules may still grant non-group-members with access to those nodes.
This module adds an additional check to the node access system, so that group posts marked "private" will be inaccessible (for view, edit, and delete operations) to anyone who is not a group member, even if other modules grant such access.