Data Privacy Statement

1. Data Storage and Use

Every time you access the service of the Identity Leak Checker on the Internet the following data is stored in a protocol file (Apache CLF-Format) to allow the investigation of past attack attempts:

  • Name of the accessed file
  • Date and time of access
  • Volume of data transferred
  • Notification as to whether file retrieval was successful
  • IP address
  • Web address previously accessed (Referrer URL)
  • Information about the operating system
  • Browser
  • Host name

The client IP address and queried email address is stored by us temporarily in a concealed form (hash) in order to detect automated queries.

2. Right of access, deletion and data blocking

(1) Because the source of the Identity Leak Checker’s data set does not allow specific assignment to an individual (§3 para. 1 BDSG), we cannot provide any information about the data set according to §34 BDSG. We do make it possible for the owner of an e-mail address contained in our data set to block or delete this address as an information source (database queries and sending e-mail).

(2) For further questions that do not pertain to paragraph 1, please contact the data protection officer at Hasso Plattner Institute. To do this, submit your request in writing to:

Hasso-Plattner-Institut für Digital Engineering gGmbH
Data Protection Officer
Prof.-Dr.-Helmert-Str. 2-3
D-14482 Potsdam

or alternatively by e-mail to: datenschutz(at)