November 16, 2021

Privacy Notice

This stackstream Privacy Notice applies to your use of stack-stream.com, site.stack-stream.com, and any other websites, applications, or services provided, owned, or operated by matched.io GmbH (with its affiliates, “matched.io”) that link to this Privacy Notice (collectively, the “stackstream”). matched.io values the privacy of users, publishers, members, and others who visit and use stackstream (collectively or individually, “you” or “users”) and wants you to be familiar with how we collect, use, and disclose personal information from and about you. This notice describes our privacy policy. By visiting stack-stream.com, site-stack-stream.com, setting up your stackstream account, or using stackstream, you are accepting the practices described in this Privacy Notice, to the extent permitted by law.

For purposes of data protection laws, matched.io GmbH located at Bei den Mühren 70, 20157 Hamburg, Germany, is the “data controller” of your information collected in connection with stackstream.

You may share personal information when using stackstream. One example is when you provide information about yourself as part of the stackstream account creation process. Another is when you take certain actions on stackstream that are public or intended to be public in nature, such as when you broadcast content, participate in a chat room, or post profile information. Given the social nature of stackstream, that information may be collected, used, or disclosed by others who are part of that social interaction. In addition, some features of stackstream are designed to provide others with information about user activity, such as identifying the user who created a particular stream. We encourage you to be mindful of this when considering your activity on stackstream.

Storage and access to cookies that are set in connection with stackstream are governed by this Privacy Notice, Section 11.

1. Personal Information Collected

a. Upon visiting stack-stream.com or site.stack-stream.com

When you visit matched.io, our web servers temporarily store each access in a log file. The following data is collected and stored until automated deletion:

  • IP address of the requesting computer
  • Date and time of access
  • Name and URL of the accessed file
  • Amount of data transferred
  • Message as to whether the retrieval was successful
  • Recognition data of the browser and operating system used
  • Website from which the access originates
  • Name of your internet access provider


b. Upon registering on stack-stream.com

We obtain information about you through the means discussed below when we provide the stackstream service. We need certain information in order to provide stackstream to you. If you do not provide us with that information, or ask us to delete it, you may not be able to use stackstream.

User-provided Information: You may provide a variety of information about yourself to us, such as your voice and image (in any content you upload), stackstream username, and email address when you register for stackstream; upload, view, or download certain content or products from stackstream; enter contests or sweepstakes; or otherwise use the features and functionality of stackstream.

Automatically Collected Information: When you access stackstream or open one of our emails, we automatically record and store certain information about your system by using cookies and other types of technologies. Cookies are small text files containing a string of alphanumeric characters that are sent to your browser. For information about what cookies are, how they work, how matched.io uses them, and how to remove them, please see section 11 of this Privacy Notice . Examples of such information we automatically collect include Internet Protocol address (“IP Address”), a unique user ID, device and browser types and identifiers, referring and exit page addresses, software and system type, and information about your usage of stackstream. Examples of how matched.io uses automatically collected information include to: (a) remember your information so that you will not have to re-enter it during your visit or the next time you access stackstream; (b) provide customized advertisements, content, and information; (c) monitor the effectiveness of marketing campaigns; (d) monitor and store aggregate site usage metrics such as total number of visitors and pages accessed; and (e) track your entries, submissions, and status in any other activities.

Information from Other Sources: We may obtain additional information from third parties and sources other than stackstream. For example, we may obtain additional information from advertisers or services you use, or social media networks (such as GitHub) for which you have approved our access. When you access stackstream through social media networks or when you connect stackstream to social media networks, you are authorizing matched.io to collect, store, and use such additional information and content in accordance with this Privacy Notice. We may also obtain information from third-party services regarding your use of such services, including about your use of the content you choose to broadcast through stackstream. We use this information to supplement the information we collect about you in order to provide more relevant, safer experiences for you with stackstream and improve stackstream, analytics, and advertising. If we combine or associate information from other sources with information that we collect through stackstream, we will treat the combined information in accordance with this Privacy Notice.

2. How Personal Information Is Used

matched.io uses such information to operate, maintain, enhance, provide, create, and develop all of the features, functionality, and services (new or existing) found on stackstream; provide security for our websites, products, software, or applications; manage relationships with matched.io  account holders; improve users’ experience with matched.io by providing content recommendations and by delivering content that we hope users will find relevant and interesting, including advertising and marketing messages; allow you to comment on content; prevent fraud and abuse; and understand the usage trends of our users.

We use your email address to communicate with you, including to notify you of major stackstream updates, for customer service purposes, or to contact you regarding any content that you have posted to or downloaded from stackstream.

matched.io may periodically send promotional materials or notifications to you related to stackstream. If you want to stop receiving promotional materials, you can go to your account settings once you have logged in to stackstream or follow the unsubscribe instructions at the bottom of any email from us.

In certain cases, we have a legal obligation to collect and process your personal information (such as our obligation to share data with tax authorities).

We may also ask for your consent to process your personal information for a specific purpose that we communicate to you. When you consent to our processing your personal information for a specified purpose, you may withdraw your consent at any time and we will stop the processing of your data for that purpose.

For legal basis, see section 6.1.b DSGVO. The transmission is always encrypted via TLS (Transport Layer Security), also known as SSL.

stackstream uses cloud services to store our data. Any personal data may also be stored there. The service's privacy policy can be found at https://policies.google.com/privacy?hl=de. All data is stored on servers in Frankfurt, Germany. matched.io has carefully selected this service and has entered into a data processing clause with Google.

3. Disclosure of Personal Information

We share such information as described below:

We disclose such information to service providers working on our behalf, such as, to: provide website hosting, maintenance, and security services; fulfill orders; conduct data analysis and create reports; offer certain functionality; or assist matched.io in improving stackstream and creating new services and features. We require that these parties process such information in compliance with this Privacy Notice, we authorize them to use the information only for the purposes for which it is provided to them, and we require them to use reasonable confidentiality measures.

matched.io may make information available to our affiliates (meaning entities controlled by, controlling, or under common control with matched.io) that are either subject to this Privacy Notice or follow practices at least as protective as those described in this Privacy Notice.

matched.io may disclose user information if we believe in good faith that such disclosure is necessary to comply with German state and federal laws or other applicable laws around the world (for example, in the country of your residence).

matched.io also reserves the right to disclose information that we believe, in good faith, is appropriate or necessary to protect matched.io from potential liability or from fraudulent, abusive, or unlawful uses; investigate and defend ourselves against third-party claims, or allegations; protect the security or integrity of stackstream; or protect the rights, property, or safety of matched.io, our users, or others.

Other than as set out in this Privacy Notice, you will receive notice when personal information about you might be shared with third parties and you will have an opportunity to choose not to share the information.

4. Account Closure and Deletion

If you would like to close your account and delete your profile information on stack-stream.com go to https://stack-stream.com/account/settings. If you close your account, matched.io may retain certain information about you for the activities described in this Privacy Notice, or as permitted or required by applicable law.

5. Third Party Services and Websites

stackstream may link to third-party websites or services. The privacy practices of those third parties are not governed by this Privacy Notice. We encourage you to review the privacy policies of these third-party websites and services to understand their practices.

If you connect to a third-party service (such as GitHub, Google, or another third-party application) through stackstream or otherwise link your stackstream account with a third-party service, you are requesting and authorizing us to share or grant access to information on your behalf (such as your username, the fact that your connection originated from stackstream, and other relevant usage and diagnostic information) with such third party.

6. Advertisers and Analytics Providers

matched.io may use third-party Web analytics services in connection with stackstream. These service providers use a variety of tracking technologies such as cookies to analyze how users use stackstream. The information collected (described above in “Automatically Collected Information”) may be shared with or collected directly by these services and processed to evaluate your use of stackstream.

7. Data Security

matched.io uses a variety of managerial, technical, and physical measures to protect the integrity and security of your information. These measures may vary based on the sensitivity of your information. However, no security precautions or systems can be completely secure. We cannot ensure or warrant the security of any information you transmit to matched.io, and you do so at your own risk. We cannot guarantee that such information may not be accessed, disclosed, altered, or destroyed by breach of any of our physical, technical, or managerial safeguards.

8. Retention of Your Information

matched.io maintains data related to your usage of stackstream for as long as it is required in order to fulfill the relevant purposes described in this Privacy Notice, as may be required (or permitted) by law such as for tax and accounting purposes, or as otherwise communicated to you. Once you have asked us to close your account and delete your profile information, we will delete all information that we are not required or permitted to retain by law.

9. Children’s Privacy

IF YOU ARE UNDER 13 YEARS OF AGE, THEN PLEASE DO NOT USE OR ACCESS stackstream AT ANY TIME OR IN ANY MANNER.

Protecting the privacy of young children is especially important. For that reason, matched.io does not knowingly collect or maintain personal information from persons under 13 years-of-age. If matched.io learns that personal information of persons under 13 has been collected on or through stackstream, matched.io will take appropriate steps to delete this information.

If you are the parent or legal guardian of a child under 13 who has become a stackstream member, then please contact matched.io at privacy@stack-stream.com to have that child’s account terminated and personal information deleted.

For residents of the EEA and residents of Brazil where the processing of personal information is based on consent, matched.io will not knowingly engage in that processing for users under the age of consent established by applicable data protection law. If we learn that we are engaged in that processing with such users, we will halt such processing and will take reasonable measures to promptly remove applicable information from our records.

10. Merger or Sale

In the event that matched.io, or some or all assets related to stackstream are acquired by or merged with a third-party entity or in connection with a contemplated change of ownership transaction, we reserve the right, in any of these circumstances, to transfer or assign the information that we have collected from users as part of that merger, acquisition, sale, or other change of control event, including in the course of diligence.

11. Use of Cookies

In addition to the aforementioned data, cookies are stored on your computer when you use our website. Cookies are small text files that are stored on your hard drive by the browser you are using. Various data can be stored within the cookies. They allow you to make your personal settings on the website. "Session cookies" or "transient cookies" are cookies that are deleted after you leave an online application and close your browser. Persistent" cookies are cookies that remain stored even after you close your browser.

The use of stackstream without cookies is only possible to a limited extent. Most browsers are set to accept cookies automatically. In general, you can prevent cookies from being stored on your hard drive by selecting "do not accept cookies" in your browser settings. You can configure your browser settings according to your wishes, so that your browser asks you before setting cookies, for example, whether you agree. Once cookies have been set, you can delete them at any time.

Furthermore, you have the option to explicitly object to the use of preference, statistics and marketing cookies when visiting our website, including the use of Facebook Pixel and Google Analytics. These cookies will not be stored according to your selection and your associated information will not be passed on to the corresponding third-party provider.


12. International Data Transfers

Information collected by matched.io is stored and processed exclusively in Germany (for instance in our major data centers) or the European Union by one of our used Third Party Services. We may use the support of service providers from third countries. For this purpose, matched.io transmits the necessary data processing and usage information to third countries. Third countries have lower data protection requirements than the member states of the European Union. In order to ensure the protection of your personal data in this case as well, we conclude special commissioned data processing agreements with each of the carefully selected service providers. Transmitted for the purpose of mediation are all the data mentioned in this statement, which may also be personal.


We use the assistance of the following providers:

  • Tidio Poland Sp. z o.o. (Wojska Polskiego 81, 70-481 Szczecin)
  • Ably Realtime (Fora, 21-33 Great Eastern Street, London, UK, EC2A 3EJ)
  • Auth0, Inc. (3rd Floor Union House 182-194 Union Street London, UK, SE1 0LH)
  • Amazon Web Services EMEA SARL (38 Avenue John F. Kennedy, L-1855 Luxemburg)
  • Stream.io Inc. (Kleine-Gartmanplantsoen 21, Amsterdam, Noord-Holland 1017RP, NL)

13. Changes and Updates to This Privacy Notice

matched.io reserves the right to change, modify, add, or remove portions of this Privacy Notice at any time (for example to reflect updates to stackstream or to reflect changes in the law). Please check this Privacy Notice periodically for those changes. Your continued use of stackstream after the posting of changes constitutes your binding acceptance of such changes.

We will not materially change our policies and practices to make them less protective of personal information collected in the past under a prior version of the Privacy Notice without the consent of affected individuals

14. Contact Information

Please contact matched.io with any questions or comments about this Privacy Notice at Bei den Mühren 70, 20457 Hamburg, Germany or by email to hello@stack-stream.com. We will respond to your inquiry as quickly as possible.