Platform Privacy Statement and Cookie Policy

We are Tunnl. We are based at Beechavenue 182 1119 PX Schiphol-Rijk. You can contact us at You can contact our Data Protection Officer at or via the switchboard at +31 020 760 2040. In this Platform Privacy Policy we describe how we use cookies and process data, including personal data, when you visit a site of one our publisher website.

We are committed to a lawful, fair and transparent processing of personal data, adhering to the EU General Data Protection Regulation (GDPR).
If you have any questions about our use of personal data when you visit our website or get in touch with us via our website, please take a look at our Website Privacy Policy.

1. How does Tunnl use cookies
Cookies to be able to sell and show ads

The websites of most of our clients are accessible free of charge. They use advertising income to cover for their cost, so ads are for them a necessary and vital source of income.

Our clients use the technology of Tunnl to sell their advertising inventory. Through our platform they are able to sell it to numerous buyers. Our platform makes use of functional and non-functional cookies. For making use of non-functional cookies, we need your approval. When you visit a website from a company that makes use of our platform the website will ask your permission (opt-in) to do this.

Our platform works as an auction that connects the buyers with our clients. In order to start the auction, Tunnl sends a so called bid-request to numerous buyers with a floor price which is the lowest proposal price that we can accept from the buyers. In response, the buyer will send a success or reject bid-response. Highest bid wins the action and gets a right to be showned on the web site.

Below we describe what cookies Tunnl uses to establish a bid request with calculation of floor price, and how long they are used.

Cookies used by Tunnl to sell and show ads

NamePlaced ByReasonHow long
uidTunnlHelps to identify individual user with a unique number giving90 days
oppTunnlTracks numbers of add request done by the user within last 90 days90 days

2. How does Tunnl use personal data
Data used by Tunnl to sell and show ads
Tunnl collects and processes the following types of (personal) data:

• General data about the browser used for instance, whether it is Chrome or Firefox, and what version.
• Whether you visit the website with a desktop/laptop or tablet/smartphone.
• The version and language of the operating system used.
• Upon access, the approximate geographical location of the visitor based on the IP address, at the country or region level.
• The IP address used (the address of the Internet connection).
• Unique user number to identify the number of add requests done within last 90 days.

Purposes that we use the data for
Tunnl uses the data it collects for the purpose of enabling the automated floor price to get the highest bid from buyers.

Our legal basis for the processing
We base our processing on consent of the data subject.

Where do we obtain the data from
We collect our data via the above cookies.

How long and where do we store data
We store data for up to 90 days. If we interact with a cookies stored on your device, this period starts again.

Who we share data with
We share the above data with a large number of buyers, such as advertisers, brands, media agencies, and other intermediaries, although not all buyers receive the same data. The list of buyers changes on a continuing basis, and for this reason we cannot include a comprehensive list here.

Transfer of your personal data
If you are an EU resident, you should also know that we intend to transfer your personal data from your home country to countries and organization that do not offer an adequate level of protection for your personal data. When we transfer this data, we will do so only when we have put in place appropriate safeguards (a copy of which you can get by writing to our DPO), or have obtained explicit consent from you for such transfer.

3. Your rights to your data
Access rights
You have the right to request access to your personal data that we process. You also have the right to:

• Rectify incorrect personal data or erase it in certain circumstances.
• Restrict or object to the processing of your personal data.
• Receive your data so that you can use it elsewhere (data portability).

If you wish to exercise any of the above rights, please contact us at We will provide you with instructions about what information (cookie) we need so that we are able to find the data in question. If you ask us to delete your data, then we reserve the right to store the data we need to meet our legal and internal audit requirements. You also have the right to lodge a complaint with a supervisory authority.

Revoke consent for Tunnl cookies and data processing
You also the right to withdraw your consent at any time but we would like to point out that this does not affect the lawfulness of the processing before the date that you withdrew your consent. To revoke your consent, please click here.

Opt-out of all cookies
If you want to opt-out of cookies more generally, you can change your browser settings so that you receive a warning before cookies are placed. You can also adapt the settings so that your browser refuses all cookies or refuses only cookies from third parties. You can also remove cookies that have already been placed. Note that you need to change separate settings for every browser and computer you use. Please also be aware that refusing cookies does not mean that you will no longer see any ads.

Whitelist of Advertising Technology Providers
Whilst we are working with our trade partners and affiliates to implement new industry standards and frameworks, such as the IAB transparency and Consent Framework. We have in the interim put in place static vendor lists with some of our partners. Data Subjects and End Users should note that at present when you provide consent toTunnl or consent to the use of our cookies, this consent is applied to our present static vendor list, if you wish to review this list please click here.

Version information
This policy was last updated 25th May 2018.