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Container Media Group

MarketingOfficial website

Container Media Group is a programmatic advertising network that delivers ads via JavaScript tags and third party cookies for behavioural targeting and measurement.

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Overview

What does Container Media Group do?

What is Container Media Group

Container Media Group is a programmatic advertising and audience monetisation platform that helps publishers and advertisers connect through real time bidding. It deploys JavaScript ad tags that load creatives, set cookies to identify users, and exchange bid signals with demand side platforms. As with any RTB platform, the technology relies on persistent identifiers and is subject to both the GDPR and the ePrivacy Directive across the European Union.

Cookies and identifiers used

Container Media Group sets third party cookies that store a pseudonymous user identifier, frequency capping data, and audience membership flags. It also synchronises with partner DSPs through cookie matching pixels. Typical retention is between thirty days and thirteen months. None of these cookies are strictly necessary for the website to function, so prior consent is required.

Legal basis under the GDPR

The only valid legal basis is explicit consent under Article 6(1)(a) of the GDPR, combined with Article 5(3) of the ePrivacy Directive. Legitimate interest is not appropriate for behavioural advertising. You must obtain freely given, granular, informed consent before the tag is loaded and provide an equally easy way to withdraw it at any time.

International data transfers

Bid data, IP addresses, and cookie identifiers may be transmitted to demand side platforms in the United States or other third countries. Transfers rely on Standard Contractual Clauses and the EU, US Data Privacy Framework where the recipient is certified. As a controller you must document recipients in your privacy notice.

Consent management and TCF

Integrate a CMP that supports the IAB Europe TCF v2.2, pass the TC string to Container Media Group before any auction, respect Global Privacy Control signals and default to no consent when no string is available. Block all advertising tags until consent is captured.

Practical compliance steps

Block the script until consent, declare every vendor in your cookie policy, keep an up to date record of consent for the cookie lifetime, refresh consent at least every thirteen months per CNIL guidance, and review the partner list each quarter. Sign a DPA with Container Media Group and confirm whether they are TCF registered.

Compliance

Container Media Group and the GDPR

Container Media Group is classified as “Marketing”. On a site that targets European visitors, it must only load after the visitor consents, and it must be listed in your cookie policy.

Legal basis
Consent (GDPR Art. 6(1)(a) and ePrivacy Directive Art. 5(3))
Risk level
high
Applicable regulations
GDPR, ePrivacy Directive, IAB TCF v2.2

Impact assessment (DPIA)

A DPIA is recommended because Container Media Group enables behavioural advertising and shares data with multiple demand side platforms, triggering Art. 35(3)(b) of the GDPR.

Sample text for your banner

We use Container Media Group to display advertising. With your consent, it may set cookies and share data with our advertising partners to deliver relevant ads.
Cookies and trackers

What Container Media Group sets and contacts

Tracking method
JavaScript ad tag with third party cookies, pixel based measurement, and DSP integration
Server location
United States and Europe (cloud based)
Data transferred outside the EU
Container Media Group operates globally with US infrastructure. Data may be transferred under Standard Contractual Clauses and the EU, US Data Privacy Framework.

Cookies set (5)

NameTypeDurationPurpose
cmg_uidthird_party12 monthsPseudonymous user identifier for ad targeting
cmg_freqthird_party30 daysFrequency capping for advertising creatives
cmg_syncthird_party12 monthsCookie sync identifier shared with DSP partners
cmg_tcfthird_party13 monthsStores the TCF v2.2 consent string read before bidding
cmg_optoutthird_party5 yearsOpt out flag when user refuses advertising cookies

Third-party domains contacted (4)

  • containermediagroup.com
  • cdn.containermediagroup.com
  • sync.containermediagroup.com
  • bid.containermediagroup.com
Questions

Frequently asked questions about Container Media Group

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What cookies does Container Media Group set?

Third party cookies for a pseudonymous user ID, frequency capping, and DSP synchronisation. Durations range from session up to thirteen months. Exact names vary by integration; review your network tab to enumerate them.

Is consent required before loading Container Media Group?

Yes. All cookies set by Container Media Group are non essential. Prior consent is required under Art. 5(3) ePrivacy and Art. 6(1)(a) GDPR before the script may be loaded.

What is the legal basis for processing?

Explicit consent under GDPR Art. 6(1)(a). Legitimate interest is not acceptable for behavioural advertising and real time bidding.

Does Container Media Group transfer data to the US?

Yes. Bid data and identifiers may be sent to US based DSP partners. Transfers rely on SCCs and the EU, US Data Privacy Framework.

Do I need a DPIA?

A DPIA is recommended for any large scale behavioural advertising tool, including Container Media Group, due to profiling at scale.

How do I implement Container Media Group compliantly?

Pair it with a TCF v2.2 CMP, block the script until consent, pass the TC string on every request, document consent, and review partner lists quarterly.

Are there alternatives?

Yes: contextual advertising (Seedtag, Adnami), direct deals without persistent IDs, or first party only retargeting solutions.

How do I update my cookie policy?

List every Container Media Group domain and cookie, indicate purpose and duration, and link to their privacy policy and TCF vendor entry where applicable.

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