Answer
If you’re a paying Premium member you’ll be able to see who’s visited your profile under the "Visitors to your profile" tab in "My Premium". It includes the following information:
- Who visited your profile.
- How visitors became aware of your profile.
- Lots of other details about your profile visitors.
If you see an external visitor, a non XING member visited your profile page. In this case we can not show personal data of that person. If you don't want such visitors please got to your XING settings and deactive the option "Make my profile publicly visible.".