Posted: August 7, 2015; Effective: September 1, 2015

This Cookie and Other Similar Technologies Policy describes the different types of cookies and similar technologies that may be applied by the technology platform (the “Platform”) owned and operated by PubMatic, Inc. and its affiliates (collectively, “PubMatic”). We may change this Cookie and Other Similar Technologies Policy at any time. Please review the “LAST REVISED” legend at the top of this page to see when this Cookie and Other Similar Technologies Policy was last revised. Any changes in this Cookie and Other Similar Technologies Policy will become effective when we make the revised Cookie and Other Similar Technologies Policy available on or through the PubMatic website, unless otherwise specified.

If you have any further queries, please contact us by email at privacy@pubmatic.com, or write to us at the following address:

PubMatic, Inc.
c/o Privacy
305 Main Street, First Floor
Redwood City, California 94063, USA

For a detailed privacy statement that applies to PubMatic’s technology platform, see our Privacy Policy.

For information about cookies that may be applied through the PubMatic.com or PubMatic.jp websites, see our Website Cookie Policy.

WHAT IS A COOKIE?

Cookies are a standard feature of websites that allow us to store small amounts of data on your computer about your visit to our publisher clients’ websites that use the Platform. You can choose whether to accept cookies by changing the settings on your browser. In relation to the use of cookies by our partners and clients, note that we do not have access or control over these cookies.

WHAT COOKIES DO WE USE?

We use a variety of cookies on the PubMatic Platform. We also may use web logs, pixel tags, or web beacons, which are pieces of code that may be used to read and place cookies on a web browser, to collect information about how you interact with websites or advertisements.

The tables below detail the most frequently used cookies by PubMatic on its Platform and explain their use.

Preference Cookies

Preference cookies collect and store information about your choices and preferences, such as your preference to opt out of other cookies that may be applied by the Platform.

Cookie Names
Purpose
optout This cookie records a user’s PubMatic opt out preference.

Advertising and Analytics Cookies

We partner with website publishers to deliver advertising that we believe may interest you based on your activity on our publishers’ websites and other websites over time. We set and access cookies on your computer or other device to perform this service and may also use web logs, pixel tags, or web beacons. These cookies and other technologies are used to deliver advertisements that are more relevant to you and your interests. They are also used to limit the number of times you see an advertisement as well as to help measure the effectiveness of the advertising campaign.

Cookie Names
Purpose
KADUSERCOOKIE We use this cookie to uniquely identify each browser or device from which an individual user visits our partners’ websites.
KCCH This cookie ensures that a PubMatic user ID is already set and that PubMatic’s code is running properly.
PUBRETARGET We use this cookie to indicate if a user can be considered for various re-targeting ad campaigns running on the Platform. For example, we may use it to determine whether to show you an advertisement that relates to a product or service that you previously viewed on an advertiser’s website.
KTPCACOOKIE We use this cookie to check if third-party cookies are enabled on the user’s browser.
COKENBLD This cookie sets a flag to “true” if cookies are enabled on the user’s browser.
PUBMDCID This cookie stores an ID for the applicable PubMatic data center that is used to display an advertisement in the user’s browser.
KRTBCOOKIE_[DSPID] We use this cookie to correlate our user IDs with those of our partners (such as demand side platform clients or other advertising technology companies). We pass the information stored by the partner in this cookie to the partner when it is considering whether to purchase advertisements. This enables the partner to make better decisions about whether to display an advertisement to you.
SyncRTB and DPSync These cookies maintain a list of our partner’s pixel IDs, which may be used to read and place cookies on a web browser, that have been synced with PubMatic IDs. This enables us to identify the partners with whom we have already synced our cookies and to ensure that we do not unnecessarily sync cookies again within a certain period of time.
USCC This cookie enables PubMatic to sync user IDs properly in situations where multiple advertisements might appear on the same webpage.
DPPIX_ON and SYNCUPPIX_ON These cookies enable PubMatic to properly sync cookie IDs with our partners by ensuring that our partners do not override each other during the sync process.
PUBUIDSYNCUPFQ This cookie indicates the last time that we synced IDs with our partner.
camfreq_ This cookie is set for each campaign and indicates the number of times (e.g., frequency) that a particular advertisement may have been shown on the applicable publisher site.
pubfreq_ This cookie is set for each advertising network and indicates the number of times (e.g., frequency) that a particular advertisement may have been shown on the applicable publisher site.
pubtime_ This cookie stores the period of time after which ad frequency counters reset.
PMFREQ_ON This cookie ensures the proper functioning of the camfreq and pubfreq cookies, described above, in situations where one cookie may override the other.
DPFQ This cookie stores information regarding the number of times that a partner’s pixel is loaded by a user’s browser. This enables us to cap the number of times that a pixel is used to record a user’s visit to a website within a specific period of time.
pi This cookie enables us to determine which set of pixels needs to be executed on the browser.
repi This cookie is a short-lived cookie that is used to determine if repixeling is in progress.

WHAT OTHER SIMILAR TECHNOLOGIES DO WE USE?

PubMatic uses other technologies, such as statistical IDs, for similar purposes as cookies. In connection with statistical IDs, we may collect and use certain characteristics of your device to help us identify it over time. We use statistical IDs to identify and probabilistically recognize the same device at a later point in time for purposes of sending advertising or content to that device in mobile apps.

HOW DO I MANAGE COOKIES & OTHER SIMILAR TECHNOLOGIES?

If you would like to opt out of cookies that may be applied by the Platform and similar technologies, such as statistical IDs, you may choose to do so by visiting the PubMatic Opt Out page.

In addition, you may 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. You may wish to refer to http://www.allaboutcookies.org/manage-cookies/index.html and www.youronlinechoices.eu for information on commonly used browsers. Please be aware that if cookies are disabled, some website features may not operate as intended.