Privacy Policy


Data collection

We collect data during the initiation, conclusion, processing and rescission of a purchase contract. This data is collected, stored and processed by us.

Your visit to our websites is documented. The IP address currently used by your end device, date and time, browser type and the operating system of your PC, as well as the pages viewed by you, are recorded. A personal reference to individuals is generally not possible and also not intended.

Data use and transfer

The personal data which you share with us, for example when sending a request or query by e-mail (such as your name and address or your e-mail address), is only for correspondence with you and only for the purpose for which you made this data available to us.

We assure you that we do not forward your personal data to third parties, unless we are legally bound to do so or you have given us your prior consent. If we use service providers for the implementation and processing of processes, the contractual relationships are regulated according to the provisions of the Federal Data Protection Act.

Consent and revocation

If you have shared personal data with us, you can request to have this data deleted again at any time. Data for invoicing and accounting purposes is not affected by a termination/revocation or a deletion.

Storage period

Personal data entered on our website is stored until the purpose for which it was provided to us has been fulfilled. If retention periods according to commercial or tax law must be observed, the storage period for certain data can be up to 10 years.


Subscribing to the newsletter means your forename, surname and e-mail address are used with your consent for our own advertising purposes. The consent to receive a newsletter via e-mail can be revoked at any time. Each newsletter contains a link with which you can revoke your consent. With your subscription you granted the following consent:

[ ] I would like to subscribe to the newsletter. You can unsubscribe to the newsletter at any time.

Use of cookies


In order to encourage people to visit our website and enable the use of certain functions, we use so-called cookies on different pages. Cookies are small text files which are stored on your end device. Some of the cookies used by us are deleted again at the end of the browser session, i.e. after closing your browser (so-called session cookies). Other cookies remain on your end device and allow us or other partner companies to recognise your browser the next time you visit (persistent cookies).

We use these cookies to analyse the access to our website. We also forward information about your usage of our website to our partners for analysis purposes.

You may also set your browser to notify you before you receive a cookie so that you can decide then if you wish to accept a cookie or accept cookies for certain situations or generally exclude cookies. The non-acceptance of cookies may restrict the function of our website.

Please also observe the following notices regarding the use of Google Analytics (view details about data usage by Google online at: and other web analysis tools.

Google Analytics

This website uses Google Analytics, a web analysis service of Google Inc., 1600 Amphitheatre Parkway, Mountain View, CA 94043, USA ("Google").

Google Analytics uses so-called "cookies", text files which are stored on your computer and enable an analysis of the usage of the website by you. The information generated by the cookie about your usage of this website (including your IP address) is transferred to and stored on a Google server in the USA. Google shall use the stored information to evaluate your usage of the website in order to compile reports about the website activities for the website operators and to provide other services associated with the website usage and Internet usage.

Google shall also transfer this information to third parties if necessary, if this is required by law or if third parties process this data on behalf of Google. In no event will Google associate your IP address with other data from Google. You can adjust your browser software settings to prevent the installation of cookies; however, please note that in this case you may not be able to make full use of all functions of this website. By using this website you agree that the data about you collected by Google may be processed as described above and for the aforementioned purpose.

You can object to the collection of data at any time and with effect for the future by using the deactivation add-on for browsers provided by Google Analytics under

You can also prevent the collection of data by Google Analytics by clicking on the following > link <. An opt-out cookie is set which prevents the future collection of your data when you visit this website:

deactivate Google Analytics

Please note that this website uses Google Analytics with the "_anonymizeIp()" function. With this function IP addresses are only stored in anonymous form, a direct personal reference in connection with the stored data is thus excluded.

We also use Google Analytics to evaluate data for statistical purposes and place ads that are relevant for you.

More information on terms of use and data protection can be found online at or

Social media buttons


Functions of the bookmarking service AddThis are embedded in our website. We use the c’t "Shariff" button from Heise. This is only a link and not a so-called "Social Plugin". If you do not use the AddThis button, then no information is transferred to AddThis and no cookie is set on your computer by AddThis. As soon as you click on the c’t Shariff button, the bookmark overview page of AddThis opens in a new window. Only then is data transferred to AddThis. Pages within AddThis are operated exclusively by AddThis LLC, Inc. 8000 Westpark Drive, Suite 625, McLean, VA 2210, USA (AddThis). More information on data collection and processing by AddThis can be found online at:

Facebook, YouTube, LinkedIn

The other buttons (Facebook, YouTube, LinkedIn) are merely graphics which link to our social media profiles, they are also not so-called "Social Plugins". If you do not use the buttons, then no information is sent to the respective providers and no cookies are set on your computer by these service providers. As soon as you click on one of the buttons, you are forwarded to our social media profile with the respective provider; only then is data transferred to this provider.

Pages within Facebook are operated exclusively by Facebook Inc., 1601 S. California Ave, Palo Alto, CA 94304, USA, within YouTube exclusively by YouTube LLC, 901 Cherry Ave., San Bruno, CA 94066, USA, and within LinkedIn exclusively by LinkedIn Corporation, 2029 Stierlin Court, Mountain View, CA 94043, USA.

More information on data collection and processing by the providers can be found online:

for Facebook at:

for YouTube at:

for LinkedIn at:

Your rights, information request

If you no longer wish to have your personal data stored or this data is no longer accurate or correct, we shall upon your request to this effect proceed to delete or block your data or make the necessary corrections (to the extent possible under the applicable law). Upon request we will send you information free of charge about all personal data we have stored about you.

Should you have any questions regarding the collection, processing or use of your personal data, or in the case of requests for information, correction, blocking or deletion of data, please send an e-mail to

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