Privacy Policy - Twitter-Seite

Contact details of the individuals responsible

In its judgment in Case C-210/16 of June 5, 2018, the European Court of Justice (ECJ) ruled that the operator of a fan page and Facebook are jointly responsible for the processing of personal data. Analogously, it can be assumed that this is applicable to the operator of a Twitter page and Twitter. Thus, common persons responsible for the operation of this Twitter page are in the sense of the EU data protection basic regulation (DS-GVO) as well as other data protection regulations:

For persons living in the USA
Twitter, Inc. (in the following “Twitter)”
1355 Market Street, Suite 900
San Francisco, CA 94103


For persons living outside of the USA
Twitter International Company
One Cumberland Place, Fenian Street
Dublin 2 D02 AX07


Max-Planck-Gesellschaft zur Förderung der Wissenschaften e.V. (MPG)
Hofgartenstrasse 8
80539 Munich
Telephone: +49 (89) 2108-0
Contact form: 

Data Protection Manager's contact details
The Data Protection Manager at the entity responsible is
Heidi Schuster
Hofgartenstrasse 8
D-80539 Munich
Phone: +49 (89) 2108-1554
E-mail: datenschutz(at) 

Executive editor for the Twitter page of the Max Planck Institute for Chemical Energy Conversion
Esther Schlamann
Max Planck Institute for Chemical Energy Conversion
Stiftstrasse 34-36
45470 Mülheim an der Ruhr
E-mail: esther.schlamann(at)

Information about our Twitter page

We operate this page to share news from our institute with you as a visitor and user of this Twitter page and our website and to inform you about news. Further information about the Max Planck Institute for Chemical Energy Conversion can be found on our website at

As the operators of the Twitter page, we have no interest in the collection and further processing of your individual personal data for analysis or marketing purposes. Further information on our handling of personal data can be found in our data protection declaration on our website at

The operation of this Twitter page, including the processing of users' personal data, is based on our legitimate interests in a modern and supportive information and interaction opportunity for and with our users and visitors pursuant to Art. 6 para. 1 lit. f. DS-GVO.



Processing of Personal Data by Twitter

Information about which data is processed by Twitter and for which purposes can be found in Twitter's privacy policy:

Twitter uses cookies to store and further process this information, i.e. small text files that are stored on the various end devices of the users. If the user has a Twitter profile and is logged in to it, it is also stored and analyzed across devices.

Twitter's privacy policy and legal basis for processing the data can be found here:

Opt-out options can be set here:

Twitter Inc. supports the standard contact clause:

The transfer and further processing of users' personal data in third countries, e.g. the USA, and the associated possible risks for users cannot be ruled out by us as the site operator.

However, the data you enter on Twitter, in particular your username and the content published under your account, will be processed by us insofar as we retweet or reply to your tweets, if applicable, or also compose tweets from us that refer to your account. The data you freely publish and distribute on Twitter is thus included by us in our offer and made available to our followers.

Statistical data

Via "Analytics" of the Twitter page, statistical data of different categories are retrievable for us. These statistics are generated and provided by Twitter. As the operator of the site, we have no influence on the generation and presentation. We cannot turn off this function or prevent the generation and processing of the data.

The following anonymous information is provided to us by Twitter:

  • Followers: number of people who follow our Twitter account.
  • Tweet interactions: all clicks on a tweet (including hashtags, links, avatar, username and tweet extension), retweets, replies, follows and likes
  • Audience insights: aggregated insights on demographics (e.g., household income categories, education, occupation, marital status), lifestyle (e.g., interests), consumer behavior (e.g., buying styles, merchandise purchases), and mobile footprint

Due to the constant development of Twitter, the availability and processing of the data changes, so we refer to the already above-mentioned privacy policy of Twitter for further details on this.

We use this aggregated data to make the contributions and activities on our Twitter page more attractive to users.

Rights of individuals affected

As an individual whose personal data are gathered as part of the aforementioned services, you have, in principle, the following rights, to the extent that no legal exceptions are applicable in individual cases:

  • Right of access (Article 15 GDPR)
  • Right to rectification (Article 16 GDPR)
  • Right to erasure (Article 17 GDPR)
  • Right to restriction of processing (Article 18 GDPR)
  • Right to data portability (Article 20 GDPR)
  • Right to object (Article 21 GDPR)
  • Conditions for consent (Article 7 GDPR)
  • Right to lodge a complaint with a supervisory authority (Article 77 GDPR)
    For the MPG, this is the Bavarian Data Protection Authority (BayLDA), Postbox 1349, 91504 Ansbach. (, poststelle(at)
    For Twitter this is Ireland Ltd. The Data Protection Commission, Canal House, Station Road, Portarlington, Co. Laois, R32 AP23, Ireland (, info(at)

Since only Twitter has full access to the user data, we recommend that you contact Twitter directly if you wish to request information or ask other questions about your rights as a user (e.g. right of deletion). To do so, write a message to @TwitterSupport while logged in or visit the Help Center

If you need support or have any other questions, please contact us by e-mail at info(at)

If you no longer wish to receive the data processing described here, please remove the link between your user profile and our site by using the function "I no longer like this site".


Status of information: 01.03.2022