Upon accepting a badge you can decide if the badge is to be made Public or Private. Private badges can only be seen by you and cannot be shared. Public badges are visible to others and can be shared, for instance on social and professional media. The Public/Private setting for a badge you have earned can be changed at any time in your Credly account, and you can also configure the privacy settings of your Credly profile. You are in complete control of the information you wish to make public.
It is also possible to reject a badge if you do not want a credential in the form of a badge.