Data protection

Data protection icon
1. General

T-Systems International GmbH takes the protection of your personal data very seriously. We always inform you about personal data that we collect during your visit to our websites, how it is used and how you can influence the process. This data privacy information provides answers to the most important questions.

2. What data is collected and how is it used?

In the provision of our services
Technical features: When you visit our websites, the web server temporarily records the domain name or IP address of your computer, the client’s file request (file name and URL), the http response code and the website from which you are visiting us.
Cookies: We use cookies for certain services. These are small text files that are stored on your computer. They enable the system to tell if you repeatedly visit websites from the same computer.
Session cookies are cookies which are only stored on your computer for the duration of your Internet session and are required for transactions (e.g. to complete a purchase). They simply contain a transaction ID.
For certain services we use persistent cookies, which are used for monitoring and personalization of contents and are stored on your computer for future sessions. These cookies are valid up to six months.
You can set your browser to prevent these cookies being stored or to delete the cookies at the end of your Internet session. However, please remember that in this case you may not have access to the full range of functions offered by our websites. Information on the browser settings can be found at:
Other personal details such as your name, address, telephone number or e-mail address will not be collected unless you provide this information voluntarily.

3. Where is my data processed?

In general, your data is processed in Germany. Data is only processed outside Germany in individual cases and in line with legal provisions.
As part of operations or for reasons related to maintenance of the systems that we use to process your personal data, it may happen that the service is performed by an international team outside the EU, based on the "follow-the-sun" principle. If this is the case, we will comply with the legal requirements applicable to cross-border transmission of data and ensure that an appropriate data protection level is maintained.

4. How secure is my data?

We have taken extensive technical and operational precautions under German law to protect your data against unauthorized access and misuse.

5. Will my data be passed on to third parties, e.g., public authorities?

Yes, certain data has to be passed on; this is governed by strict contractual and legal regulations:
  • To external service providers for data processing:
    Service providers only come into contact with our customers’ personal data within the framework of what is known as commissioned data processing. This is explicitly provided for by law (§ 11 Federal Data Protection Act, Bundesdatenschutzgesetz – BDSG). In such cases, we also remain responsible for protecting your data. The provider follows our instructions at all times when working with your data. To ensure that this is the case, we have put strict contractual regulations in place and carry out technical/organizational measures and extra checks as necessary.
  • Based on legal requirements:
    In certain cases, we are legally obliged to pass on data if requested to do so by a state body. 
We do not pass on your data to third parties for any other purpose, unless you have given express permission for us to do so or this is permitted by law.

6. Will my usage habits be evaluated, e.g., for advertising purposes?

We or companies commissioned by us create usage profiles under pseudonyms to the extent permitted by law. These can be evaluated for advertising and market research or for designing websites in line with requirements. This information cannot be traced back to you directly. The profile data is not linked to any other information about your person. The following informs you about the processes used on our websites and how you can revoke consent at any time.
Website analysis with Webtrekk:
We use the services provided by Webtrekk GmbH to record statistical data regarding the usage of the websites and to optimize our services accordingly. Webtrekk GmbH is TÜV-certified for data privacy in respect of web controlling software. As part of your visit to our websites, information that your browser transfers is collected and analyzed. This information is collected by means of a measurement pixel, which is incorporated on each website. A signature is used for recognition purposes. This is made up of various automatically transferred pieces of information from your computer. Webtrekk also uses the following cookies:
  • Session cookie (for session identification, lifetime: one session)
  • Long-term cookie (to detect new/existing customer: 6 months)
  • Opt-out cookie (where users object to tracking: 60 months)
Webtrekk GmbH stores the IP address only in abbreviated (anonymized) form and only uses it for session identification, for geolocalization (down to city level) and to prevent attacks. The IP address is erased again immediately so that the recorded data is then anonymous.
You can object to data processing by Webtrekk at any time under the following link:
Hubspot Inc.
Contents on are hosted on HubSpot. Please find below all important information regarding the use of Cookies and about Data Privacy as well as on how HubSpot complies with GDPR.
Tag management with Tealium
Tealium IQ is a tag management system that allows measurement pixels from third-party providers to be loaded onto our websites (e.g. the Webtrekk measurement pixel). To optimize loading of the measurement pixels, Tealium collects certain non-personal data using a cookie. This cookie is only valid for 12 months. The following information is stored in the Tealium cookie:
  • Time stamp of the website visit
  • ID for the website call-up
  • ID for the visitor
  • ID for the session
If you wish to reject the Tealium cookies, you can disable these. Stipulate in your browser settings that cookies from the “” domain should be blocked.

7. What is conversion tracking and how is it used?

If you reached our websites via a Google ad, an affiliate ad or a Deutsche Telekom e-mail, a cookie is stored on your computer by Google AdWords or Teradata. This cookie becomes invalid after 30 days. No conclusions can be drawn about you as a person.
We use the information collected with the aid of the conversion cookie to create statistics about our conversion rate. This means that we find out how many users came to our websites via a Google ad, an affiliate ad or a Deutsche Telekom e-mail, and acquire a product within 30 days.
If you do not wish to participate in the tracking process, you can disable cookies for conversion tracking by specifying in your browser settings that cookies from the relevant domain are to be blocked:
  • Google Adwords:
  • Teradata:

8. Online chat service

On our websites you have the opportunity to use our online chat service free of charge and in real time. To this end, the chat service operator LivePerson Netherlands B.V. uses cookies that analyze the website usage. LivePerson Netherlands B.V. creates usage profiles under pseudonyms to the extent permitted by law. This information cannot be traced back to you directly. The profile data is not linked to any other information about your person. You can object to the creation of usage profiles at any time. We use the services provided by LivePerson Netherlands B.V. to record statistical data regarding the usage of this application and to optimize our services accordingly.
To opt out of the online chat service, a cookie entitled “LPOptOut” is set by the domain and The cookie is set for the aforementioned domain, for each browser and computer. If you therefore, for instance, visit our websites from home and work or with different browsers, you would have to set the cookie separately from each computer and browser.
You can object to data processing at any time under the following link:

9. Can I obtain information about my saved data?

You may request, free of charge, information on the scope, origin and recipients of the stored data as well as the purpose of storage.

10. Can I have data corrected?

You may request that incorrect data be corrected at any time.

11. Where can I find further information regarding data protection at Deutsche Telekom?

Further information, including information on data privacy in special products, is available at and 

12. Who should I contact if I have any queries regarding data protection at Deutsche Telekom?

If you have any queries, please contact our Customer department or the Group Data Privacy Officer at Deutsche Telekom AG, Dr. Claus D. Ulmer, Friedrich-Ebert-Allee 140, 53113 Bonn, Germany,