Data privacy

The person (maintainer) responsible for the content of this website is: Manfred Lein, see the contact data in legal information.

The technical service related to the publication of this webpage, including the storage of the content and the public access to the webpage, is provided by the webhoster STRATO AG, Otto-Ostrowski-Straße 7, 10249 Berlin.

Certain personal data of users (log data) is processed and stored by the webhoster in order to provide a functioning website and for purposes of legitimate interest, including the optimization of the web services and defense against electronic attacks. The processing of log data is based on Article 6(1)(f) General Data Protection Regulation (GDPR). No such data is stored by the person responsible for the content of this website (maintainer) or passed on to any third parties. No personal data of users is passed from the maintainer to the webhoster.

The following information is included in the log data when a user accesses the website: accessed internet domain, client IP, request line (details of the request by the user), timestamp (day and time of access), status code (information about the success of the request), size of the response body (transferred data), referer (referer information sent by the client, i.e., webpage from which this site was accessed), user agent (information about browser and operating system used by the user on the client side), remote user (deprecated authentification information, typically not used in present-day webpages and therefore empty). Client IP addresses are stored for seven days in full ("non-anonymized") form. Afterwards this data is stored in anonymized form. Log data is stored for not longer than 6 months unless required otherwise by law.

When electronic communication (email) is directed to the email address specified on this website, this happens on a voluntary basis and the sender is responsible for the transmission of any personal data. Note that such emails (including email address and further data included in email headers) may be stored on the personal computers of the maintainer and on the servers of email providers, possibly in foreign countries. Emails may be stored for the duration needed to handle the communication, based on Article 6(1)(a) or 6(1)(f) GDPR.

This website does not make use of cookies or local storage variables on your device. To request cookies, you may send your postal address to the maintainer.

The "Publications" page uses session storage variables in order to let you browse more smoothly through the publication years. This means that your browser internally stores data reflecting your navigation through the page. This data is automatically deleted when you close the tab or exit the browser. No such data is stored permanently or transmitted through the internet. Session storage can be switched off by disabling javascript in your browser.

The search function on this website transmits your input to the DuckDuckGo search engine, see, which executes the search and shows the results, possibly including advertising. This means that by using the search function, you are taken away from this website and you agree to the terms and conditions of DuckDuckGo, see According to DuckDuckGo, no personal information is collected when you use the search engine and no cookies are used by default.

If your personal data is processed, you are a data subject in the context of the GDPR and you have the following rights towards the data controller if the legal requirements are met:

• Right of access to information according to Article 15 GDPR
• Right to rectification according to Article 16 GDPR
• Right to restrict processing according to Article 18 GDPR
• Right to erasure according to Article 17 GDPR
• Right to be informed according to Article 19 GDPR
• Right to data portability according to Article 20 GDPR
• Right to object according to Article 21 GDPR
• Right to revoke the data protection declaration of consent as per Article 7 (3) GDPR

Furthermore, you have the right to lodge a complaint with a supervisory authority: Without prejudice to any other administrative or judicial remedy, you have the right to lodge a complaint with a supervisory authority, in particular in the Member State where you reside, your place of work, or the place of the alleged infringement, if you believe that the processing of personal data concerning you infringes the GDPR.

Supervisory authority responsible for Niedersachsen:

Die Landesbeauftragte für den Datenschutz in Niedersachsen
Prinzenstr. 5
30159 Hannover
Tel. +49 511 120 - 4500
Fax +49 511 120 - 4599