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Privacy Policy

Privacy Policy

Criteo takes your privacy very seriously. This privacy policy governs and details the main privacy principles we apply to the data we collect through our services.

To access our privacy policy governing our corporate website only please click here.

1 -About Criteo’s services 

Criteo specializes in creating personalized advertisements. We work with online partners to build advertisements for users who visit their website or mobile applications and with publishers to display personalized advertisements.

Our aim is to deliver advertisements by displaying products and/or personalized banners that you might be interested in, based on your recent browsing behavior. For example, if you visit and browse on Website/mobile application A, on a subsequent online visit to Website/mobile application B, you will see ads personalized by your browsing history on Website/mobile application A.

With our service, you should receive personalized ads that are more relevant for you than the standard advertising you would receive without Criteo. Click here for more information on Interest Based Advertising.

2 – Our technology 

Online web environment: (desktop, tablet, and smartphone browsers)

Criteo “tags” visitors to its partners’ websites with browser cookies. Users tagged by Criteo are given a technical identifier. At no point does Criteo collect identifying personal data such as your name or address. 

The browser cookies track the products viewed by the visitor and pages visited of the partner for whom Criteo is delivering ads. Pixel tags are used by Criteo to transfer browsing data from visitors of our partner's websites to Criteo's servers.

What are cookies? A cookie is a small text file stored on a user’s computer for record-keeping purposes. There are two types of cookies:

  • Session cookies are used to make it easier for you to navigate on websites. A session ID cookie expires when you close your browser.
  • Persistent cookies are used to run our technology as they enable us to track and target the interests of our users to enhance the experience on our partners’ websites. Persistent cookies remain on your hard drive for an extended period of time. You can remove persistent cookies by following the directions provided in your internet browser’s ‘help’ file.

What are pixel tags? A pixel tag (also commonly known as a web beacon) is an industry-standard, often-transparent graphic image usually no larger than a 1x1 pixel that is placed in a website.

Our partners’ advertisements are displayed on many websites, also known as “publishers.” These publishers may also place cookies on your browser. These cookies are there so that the publishers recognize that Criteo has a personalized advertisement available for your browser.

Other environments (Mobile applications) 

In environments that do not support cookies, like mobile applications, we may use other similar technologies for the same purpose of cookies. To serve our ads in mobile applications we collect identifiers, such as Google Advertising ID or Apple IDFA depending on the operating system of your mobile device. These identifiers consist in a string of technical and random characters singling out your device that Criteo stored by Criteo with a hash (non reversible encrypting method).

Linking environments: (browsers and mobile apps used) 

To serve you our personalized advertisements and provide a seamless online experience, we may link your identifiers on the different environments you are using (“ID syncing”). At no point we collect identifying personal data such as your name or address to operate the linking. We use exact linking methods by leveraging the technical data collected through our technology such as our advertising partner’s identifiers or email hash that they may pass to us. See data collection paragraph to learn more.

3 - Data collection and use

We do not know who you are. We collect and use technical data relating to your browsing navigation to display personalized advertisements.

We collect browsing information

In order to serve you advertisements that are the more relevant to your interests, we collect data related to your browsing activity through cookies or equivalent identifiers that record:

  • events related to your activity on our advertising partner’s website (such as the number of pages viewed, the products you viewed on that website, your searches made on the partner’s website)
  • information related to your device (device type, operating system, version)
  • and events related to the Criteo ad serving activity such as the number of ads displayed to you.

We also collect technical user identifiers from our advertising partners for the purpose of linking the different browsers and mobile apps you use and serve you relevant ads based on your behaviour across environments (“ID syncing”). For that purpose we process and store

  • Technical IDs of our advertising partners, and/or a hashed version of your CRM ID or of your email address – the hashing method used is the MD5 which is a non-reversible encrypting method. MD5 of your email correspond to a series of characters that does not permit your identification. For eg : a hash of name@mail.com would be 95ad3e9a65078288849e0ce56cf032c4 
  • Mobile advertising IDs (such as Apple IDFA or Google AAID) which are specific technical data created by mobile manufacturers to allow personalization and customer analytics in a secure and non-identifying way for users

Finally, we can collect technical identifiers from third parties for the purpose of improving our ID syncing and be sure to offer you a seamless online experience. These trusted partners commit to only share ID corresponding to deterministic linking made between cookies and/or mobile identifiers and to provide an efficient choice mechanism to end users (opt-out). For eg : the linking information sourced from our partners could be Cookie ID ABC = Apple IDFA 123 = MD5 hashed value)

We do not collect any identifying information

We do not know who you are. We do not know your address, your place of work, your date of birth, your email address, your phone number. We do not use or store your IP address for targeting purposes*.

We do not collect hardware-based identifiers such as UDID, Mac Address.

We do not collect sensitive information (such as religion, political opinion, health…).

We collect this information in order to increase the relevancy of the ads being displayed to you.

The data we collect is also used for reporting purposes, and to give our clients and partners more information about the performance of their advertising campaigns, and to improve performance over time.

We do not create segments to specifically target children under 13 years old.

We do not process any information which could be used by Criteo, directly or indirectly, with the help of a third party or otherwise, to determine the personal identity of users.

We share information collected with our subsidiaries or affiliated companies. We share aggregated data with our partners, i.e. data that does not permit identification of a partner, or permit you to be identified. We share non-aggregated data only upon approval of our partners and in compliance with our commercial agreements.

We partner with Ad exchanges platforms to buy ad placements through auctions. Before the auction we link our ID with the ad exchange platform and then participate to the auction by sending the bid price and the banner code to display.

*In compliance with the best industry standards, we use IP addresses: 

  • For fraud detection purposes (and not for targeting purposes) to help alert us to situations which could not have been caused by human behavior, such as a massive amount of clicking in a limited period of time; or
  • To extract geographical information.

4 - Your options to disable the display of Criteo advertisements

Please note: that each environment is separate. If you do not want to receive Criteo ads whatever device, browser or environment used you must disable our services for both the online web and mobile app environments.

Online web environment: (desktop, tablet, and smartphone browsers)

Please note: that this procedure will only block ads that are displayed by Criteo. If you chose to opt out linked browsers, please note :

  • that your opt-out on these linked browsers will be effective as soon as we see you again on these browsers if this happens within 6 weeks ;
  • and that you may nonetheless continue to have cookies on other unlinked browsers and see ads displayed by Criteo on these browsers.

You can also opt out of Criteo’s service by visiting the followings links. Please note that these platforms allow you to opt out of interest-based advertising delivered by registered members on the current browser you are using.

For US:

For EU:

You may also want to use browser settings to modify your preferences. At Criteo our goal is to offer a harmonized online experience whatever browser you use. Most browsers accept our cookies by default but in certain cases, like Safari, our cookies are blocked by default by the browser settings (and potentially without your knowledge). In these situations we will inform you before we drop our cookies so that you can tell us either that you want to experience our ads, or opt-out of our services by using the Criteo opt-out. In cases where you interact with our service and want to experience our personalized ads your browser settings may nonetheless be configured to block certain third party cookies. In this situation, the most efficient way to disable our ads in for these browsers is by using our Opt-out.

As described above, we elected to provide mechanisms of choice through our proprietary opt out and through industry platforms and do not respond to web browser do not track signals.

Other environments (Mobile applications) 

Please note: to opt-out from advertising served by Criteo in mobile applications, you must be browsing in applications.

If you no longer want to be exposed to Criteo personalized banners in the mobile application environment, you can opt out simply by clicking on the opt-out button accessible through the ad choices icons integrated in all our banners.  (see complementary options for iOS and Android here under)

Please note that this procedure will only block ads that are displayed by Criteo. If you want to disable more services, please refer to your operating system settings, or follow instructions below. Your  opt-out will be stored server side linked to your device ID. 

Android Users (version 2.3 and above)

To use the “opt-out of interest-based advertising” option, follow the instructions provided by Google here: Google Play Help. If you don’t have the Google Play Services installed on your device, you won’t receive Criteo services. 

Please note that this is a device setting and will disable interest-based ads from all providers, and not just for Criteo

iOS users (version 6 and above)

To use the “Limit Ad-Tracking” option, follow the instructions provided by Apple here: Apple Support Center

Please note that this is a device setting and will disable interest-based ads from all providers, and not just for Criteo

Other Platforms

Criteo services only work with iOS (version 6 and above), so we do not provide  interest-based ads on other platforms.

5 - Criteo commitments and adherence

Criteo supports initiatives of greater transparency and control for users and in particular has been an early adopter to the following initiatives: 

 undefined   The Digital Advertising Alliance

Criteo adheres to the Digital Advertising Alliance Self-Regulatory Principles for Online Behavioral Advertising. Criteo subscribes to the DAA opt-out platform which offers the consumer a choice page to opt out from advertising services, and general information related to privacy.

 undefined   The Network Advertising Initiative

Criteo adheres to the Network Advertising Initiative Standards (NAI Code of ConductMobile Application Code). NAI offers an online web opt-out platform to allow consumers to express their choices and provides general information related to privacy and Interest Based Advertising.

 undefined The IAB Europe

Criteo belongs to the IAB Europe and conforms to the OBA Framework. The IAB Europe offers consumers an online web opt-out platform and provides general information to consumers about privacy tools.

  undefined EDAA

Criteo is also a member of the European Digital Advertising Alliance (“EDAA”) and is in compliance the EDAA’s Self-Regulatory Principles. Criteo received independant data protection EDAA certification.

EDAA was founded by a European industry coalition representing advertisers, the advertising agency sector, the direct marketing sector, the advertising network sector and the media sector.

EDAA offers consumers an online web opt-out platform and provides general information to consumers about privacy tools.

AdChoices | Choix de pub DAAC

Criteo is also a member of the Digital Advertising Alliance of Canada (“DAAC”) and is in compliance the DAAC’s Self-Regulatory Principles. 

 Transfers of data outside EU

When it comes to data protection and privacy, we impose an high level of requirements to all our partners across the world. Thus, should the relationship with one of our partners involve cross-border data flows outside the European Union, our partner shall formally undertake to comply with the best data protection standards by adhering without any restrictions or limitations to theStandard Contractual Clauses adopted by the European Commission.

 undefined TRUSTe

Criteo has been awarded TRUSTe's Privacy Seal signifying that this privacy policy and practices have been reviewed by TRUSTe for compliance with TRUSTe's program requirements including transparency, accountability and choice regarding the collection and use of your information.

TRUSTe's program covers the collection and use of information by Criteo from third party desktop websites via their services.

6 - Data security and retention

The security of your information is fundamental to Criteo. We have implemented industry-standard security measures, which include the use of firewalls and encryption.

We retain the technical data that we collect for up to 13 months from the date of collection. Our cookies expire 13 months after they are last updated.

In the case of fraud detection, IP address may be retained for a maximum of 6 months for the purpose of investigating potentially fraudulent activity. The IP address is processed by teams separate to those responsible for the Criteo algorithm.

7 - Contact

For any questions on this privacy policy, you can contact:

By email cil@criteo.com, or,

By mail: CIL-CRITEO – 32 Rue Blanche -75009 Paris- France

If you are not satisfied with our response you can contact TRUSTe here.

8 - Changes to our privacy policy

Please note that we may update or change this privacy policy. If we revise our privacy policy, we will post those changes to this privacy statement, and to other places we deem appropriate, so that you are aware of what information we collect, how we use it, and under what circumstances, if any we disclose it. If we make any material changes we will notify you by means of a notice on this site prior to the change becoming effective. Please click here for the latest version of the privacy policy.

Last updated: September 23, 2015