Privacy policy

1. Responsibilities and data protection officer

Data processing is the responsibility of the XFuels GmbH.
Postal address: Lindenthaler Hauptstrasse 145, 04158 Leipzig, Germany
General contact:
Contact data protection officer:

2. Information on the collection of personal data

2.1. General

The processing of personal data by XFuels GmbH is in accordance with the GDPR and the Federal Data Protection Act (BDSG). Personal data is only processed by us to the extent necessary. Which data is required and processed for which purpose and on what basis is largely determined by the type of service you use or the purpose for which it is required. Personal data are all data that can be related to you personally, e.g. name, address, e-mail addresses and user behavior. In the following we inform you about the collection of personal data when using our website.

2.2. Collection of personal data when visiting our website

When you use our website for informational purposes only, i.e. when you do not send us any other information, we only collect the personal data that your browser sends to our server. If you wish to view our website, we collect the data that is technically necessary for us to display our website and to ensure its stability and security. In detail, the following data is temporarily stored in a log file for each access/retrieval:
technical details of the browser used, anonymous IP address, date and time, page opened/name of the file downloaded, quantity of data transferred, and notification of whether viewing or download was successful.
XFuels GmbH is additionally obliged on the basis of Art. 6 para. 1 lit. e GDPR in conjunction with para. 5 BSI-law to store data to protect against attacks on the internet infrastructure of XFuels GmbH and the communication technology of the Federal Government beyond the time of your visit. This data is analyzed and, in the event of attacks on communications technology, is required to initiate legal and criminal prosecution. The data will be deleted as soon as they are no longer required for the fulfilment of the task. Data that is logged when you access XFuels GmbH website is only transferred to third parties if we are legally obliged to do so or if the transfer is necessary for legal or criminal prosecution in the event of attacks on the communication technology of the German Federal Government. We do not pass on information in other cases. A consolidation of this data with other data sources does not take place either.

2.3. Cookies

In addition to the data mentioned above, cookies are stored on your computer when you use our website. Cookies are small text files that are stored by the internet browser on the user’s terminal device. Cookies cannot execute programs or transfer viruses to your computer. They are used to make the internet offer as a whole more user-friendly and effective. Without cookies, for example if they have been deactivated in the browser, it is not possible to use our website in its entirety.
Temporary cookies (matomo): These so-called session cookies are used for user analysis (see point 2.4). They do not contain any personal data and expire after the end of the session or after the end of a user survey, which is usually conducted every two years.

2.4. Matomo analysis service (user analysis)

On its website, XFuels GmbH uses the web analysis service “matomo” ( to analyse usage data. Matomo uses cookies to enable a statistical analysis of the use of XFuels GmbH’s website by its visitors. Matomo cookies do not contain any information that would enable a user to be identified. Each time a user accesses XFuels GmbH website and each time a file is downloaded, data on this process is temporarily stored and processed in a log file. Prior to storage, each data record is made anonymous by changing the IP address. On the basis of Art. 6 para. 1 lit. e GDPR in accordance with para. 3 BDSG, XFuels GmbH evaluates usage information for statistical purposes as part of its public relations work and for the demand-oriented provision of information on the tasks to be performed by XFuels GmbH. The data generated with matomo is processed and stored by ourselves directly on the webhost of this website exclusively in Germany. Therefore no data is exchanged with or any other third party websites or services.
Further information on data protection at matomo can be found here:

Notes on opposition
If you do not agree to a completely anonymous storage and evaluation of this data from your visit, you can object to the storage and use of this data at any time by clicking on the mouse.
I object to the processing of my personal data with matomo on this website.

You may choose to prevent this website from aggregating and analyzing the actions you take here. Doing so will protect your privacy, but will also prevent the owner from learning from your actions and creating a better experience for you and other users.

For this purpose, a so-called opt-out cookie is stored on the end device, which prevents the collection of user data when visiting this website. In order for the opt-out to be effective, the cookie must be stored on every terminal device used. Since the cookie is stored in the respective browser (internet program), the cookie must be stored in each browser if several browsers are used on one end device (e.g. internet explorer, chrome, mozilla firefox). It should also be noted that if all cookies are deleted, the objection cookie is also deleted and must then be stored again.

3. Processing of personal data in the context of contacting us

It is possible to contact us via the e-mail addresses we provide. In this case, the user’s personal data transmitted with the e-mail (e.g.: name, first name, address), at least however the e-mail address, as well as the information contained in the e-mail (any personal data you may have transmitted) will be stored exclusively for the purpose of contacting and processing your request. The legal basis for the processing of the data processed in the course of sending an e-mail is Art. 6 para. 1 lit. e GDPR.

4. Processing of personal data in the context of using social networks

On our website, we might offer you the opportunity to visit our presence in social networks and platforms such as LinkedIn or twitter. We use this online presences in order to communicate with the users active there and to inform them about our projects and related services. If you click on the respective logo, a link will take you to the respective page. When you visit our platform, your personal data is not only collected, used and stored by us, but also by the operators of the respective social network. This happens even if you yourself do not have a profile on the respective social network. The individual data processing procedures and their scope differ depending on the operator of the respective social network and these are not necessarily comprehensible to us. XFuels GmbH has no influence on the collection of data and its further use by the social networks. To what extent, where and for how long the data is stored, to what extent the networks comply with existing deletion obligations, what evaluations and links are made with the data and to whom the data is passed on, is not comprehensively apparent to us. When calling up one of our appearances in social media, the terms of use and the data protection declarations of the respective operators apply.
The privacy policy for the social network LinkedIn, operated by LikedIn Corporation, 2029 Stierlin Court Mountain View, CA 94043, USA, can be found at
The privacy policy for the Twitter social network, operated by Twitter Inc., 1355 Market Street, Suite 900, San Francisco, CA 94103, USA, can be viewed at

5. Transfer of your data to third parties

XFuels GmbH will not pass on your personal data to third parties unless we are legally obliged to do so by law.

6. Data transmissions abroad

XFuels GmbH does not transfer personal data to third countries. If you use third-party social media, the data protection regulations of the respective providers apply.

7. Duration of data storage

Your data will not be stored for longer than is necessary for the purpose for which it is processed or as required by law.

8. IT security of your data

The protection of your personal data is an important concern for us. Therefore, technical and organizational security measures ensure that your data is protected against accidental and intentional manipulation, deletion and unauthorized access. These measures are updated in line with technical developments and constantly adjusted to the risks.

9. Reference to users’ rights

You have the right, to receive information about your data stored by us (Art. 15 GDPR), to request correction of your data stored with us (Art. 16 GDPR), to request deletion of your data stored with us (Art. 17 GDPR), to request restriction of the processing of your data stored with us (Art. 18 GDPR), to object to the storage of your data if your personal data are processed on the basis of Art. 6 para. 1 sentence 1 lit. f and e GDPR (Art. 21 GDPR), and to receive the data concerning you in a common, machine-readable format from the person in charge, in order to have them forwarded to another person in charge, if necessary (Right to data transferability, Art. 20 GDPR).
You also have the right to lodge a complaint with the competent data protection supervisory authority pursuant to Art. 19 GDPR. The competent authority is the Federal Commissioner for Data Protection and Freedom of Information (BfDI).
If you have any questions or complaints about this website, you can contact the Data Protection Commissioner at the contact address given above.

10. Objection or revocation against the processing of your data

10.1. Opposition

If XFuels GmbH processes your personal data for the performance of a task in the public interest (Art. 6 para. 1 letter e GDPR), you have the right to object to this processing in accordance with Art. 21 GDPR for reasons arising from your particular situation.

10.2. Revocation

If personal data is processed on the basis of your consent (Article 6 paragraph 1 letter a GDPR), you can revoke this consent at any time for the corresponding purpose. The legality of the processing based on your consent remains unaffected until receipt of your revocation.

Status: 14.01.2022