How do I prevent usres from seeing the group content

Today the only limitation for non-members users is to participate in discussions, but they can see all the content in the group.
Is there a way to show the group icon (in the "Featured groups" for example), but do not show the whole content.

(I want useres know the group is but without exposed to the content)

Is there a way to do so?

Thank you
Yoram