Platform Cookie Policy

Last Updated: July 1, 2025

This Cookie Statement explains how Magnite and its affiliates (collectively “Magnite”, “we”, “us”, and “ours”) use cookies and similar technologies (“Tracking Technologies”) in the operation of its advertising technology platforms (collectively, the “Platform”) and your rights to control our use of Tracking Technologies.

What are cookies?

Cookies are small data files that are placed on your device when you visit a publisher client’s website or app that uses our Services. They allow us to collect information (like your IP address or other device identifiers) from your device.

What other similar technologies do we use?

Cookies are not the only way to recognize or track end users. We may use other similar technologies, including:

Tags and Pixels: These blocks of code track your navigation and browsing behavior on websites or apps using our technology. We use them to synchronize information that we collect with information independently collected by our customers and other third party advertising platforms and advertisers that are interested in providing you with ads.
Software Development Kits or “SDKs”: These are blocks of code similar to tags and pixels that are embedded into an app that allow us to track certain information relating to your use of apps using our technology.
Mobile device identifiers: We also use standard device identifiers, for example the “IDFA” advertising identifier used on Apple’s iOS devices and the “Google Advertising ID” advertising identifier used on Android devices, to track your use of mobile apps.
Statistical Identifiers: We use probabilistic methodologies of identifying devices based on linking several characteristics about a device/browser together that have a reasonable likelihood of being associated with that unique device.
Hashed email address: We may receive hashed email addresses to match audiences. Hashing is a standard process of converting a directly identifiable email address to an encrypted version that is consistent and pseudonymized but cannot be reversed.

Cookies or other similar technologies set by us and third parties through our Platform

We use a variety of cookies in connection with the Platform. Some cookies are required for technical reasons for our Platform to operate. Other cookies enable us to track and target the interests of end users (“end users” or “you”) of our publisher’s Digital Media Properties that use our technology. We may use cookies for advertising, analytics or measurement purposes.

Third parties may also set cookies on your device to serve advertising through our Platform, or for analytics or other purposes. These companies may use information about your visits to publisher’s Digital Media Properties using our technology in order to provide relevant advertisements about goods and services that you may be interested in.

We also use secure server-to-server connections with some of our partners and third parties to collect information using a mechanism called “cookie syncing” where we and our partners use a “match table” to append information collected based on different identifiers.

Please see below for the details of the types of cookies set by us and third parties using our Platform.

Types of cookies	Who sets these cookies
Essential website cookies: These cookies are strictly necessary to provide you with services available through our Platform, including your cookie choices.	Magnite Third party fraud prevention and detection providers: Human (f/k/a White Ops) Moat (Oracle) Pixalate DoubleVerify
Analytics and measurement cookies: These cookies collect information that is used either in aggregate form to help us understand how our Platform is being used and to provide us with key analytics.	Magnite Third party measurement and attribution providers: Comscore TVSquared Nielsen Lucid Happydemics AudienceProject Google Analytics
Advertising cookies: These cookies are used to make advertising messages more relevant to you. They perform functions like preventing the same ad from continuously reappearing, ensuring that ads are properly displayed for advertisers, and in some cases selecting advertisements that are based on your interests.	Magnite SpringServe Third party advertising platforms: (see below)

Essential website cookies: These cookies are strictly necessary to provide you with services available through our Platform, including your cookie choices.

Analytics and measurement cookies: These cookies collect information that is used either in aggregate form to help us understand how our Platform is being used and to provide us with key analytics.

Advertising cookies: These cookies are used to make advertising messages more relevant to you. They perform functions like preventing the same ad from continuously reappearing, ensuring that ads are properly displayed for advertisers, and in some cases selecting advertisements that are based on your interests.

Magnite Third party fraud prevention and detection providers:
Human (f/k/a White Ops)
Moat (Oracle)
Pixalate
DoubleVerify

Magnite Third party measurement and attribution providers:
Comscore
TVSquared
Nielsen
Lucid
Happydemics
AudienceProject
Google Analytics

Magnite
SpringServe
Third party advertising platforms: (see below)

Your Opt-Out Choices

You have the right to decide whether to accept or reject cookies. If you would like to opt out of cookies and other Tracking Technologies that may be set by our Platform for advertisements based on your interests, you may opt out by using the opt out tools on our website at our User Choice Portal.

You can also refuse or accept cookies from the Platform at any time by activating settings on your browser. Information about the procedure to follow in order to enable or disable cookies can be found on your Internet browser provider’s website via your help screen.

Please note that opt outs operate by placing a cookie on your device that is unique to the browser and device you use to opt out. They may not function properly if you have configured your browser to reject certain cookies. If you change browsers or devices, or delete the cookies on your device, you will need to opt out again. You also can set your browser to notify you when a cookie is being set and to block most cookies, including ours.

In some countries, our clients are required to ask for your consent before they use our Tracking Technologies. In those cases, we will not use such if they have told us that you do not consent to their use. However, if you have consented and now wish to change your mind, you can opt out using our opt-out tools above.

How often will you update this Cookie Statement?

We may update this Cookie Statement from time to time in order to reflect, for example, changes to the technologies we use or for other operational, legal or regulatory reasons. Please therefore re-visit this Cookie Statement regularly to stay informed about our use of Tracking Technologies.

The date at the top of this Cookie Statement indicates when it was last updated.

Where can I get further information?

For more information about our privacy practices, if you have questions, or if you would like to make a complaint, please contact Magnite’s Privacy Team by email at [email protected] or by post using the details provided below:

Magnite, Inc.
Attn: Privacy Team
6080 Center Drive 4th Floor, Los Angeles, CA 90045, USA

You can also contact Magnite’s Data Protection Officer at [email protected]

If you are based in the EU you can contact our EU Representative:

[email protected]
Lionheart Squared (Europe) Ltd (FAO – Magnite),
2 Pembroke House, Upper Pembroke Street 28-32,
Dublin, DO2 EK84, Republic of Ireland.