Home Agencies GroupM Files Complaint Against Ebiquity As Second ANA Report Looms

GroupM Files Complaint Against Ebiquity As Second ANA Report Looms

SHARE:

groupm-ebiquityThe fallout from the Association of National Advertisers’ report on media agency transparency has taken an unexpected twist.

WPP’s media buying unit, GroupM, is suing Ebiquity’s media auditing arm, FirmDecisions, claiming it violated an NDA and misused classified information that GroupM accidentally sent to FirmDecisions. Campaign first reported the story.

According to the complaint, GroupM erroneously sent “four or five” confidential documents to FirmDecisions:

“Despite a request for return of the Confidential Documents, FirmDecisions has failed or refused to return, or suitably account for, the Confidential Documents … and has failed or refused to provide any information about how the Confidential Documents came into its possession.”

GroupM isn’t fully buying FirmDecisions’ claim that it has deleted those documents, and is inferring in its complaint that because the documents haven’t been returned, they either have been or could be “disclosed to third parties, in breach of … the NDA.”

The agency group is especially wary of a FirmDecisions senior employee who claimed it was “best to keep [the confidential documents] up our sleeve to use when needed.”

FirmDecisions claims that it told each GroupM agency in every instance where confidential information was sent in error and proceeded to delete or return the documentation immediately.

The lawsuit comes just as Ebiquity is slated to follow up after the July Fourth holiday on the ANA transparency report, released earlier this month, with a set of guidelines for marketers on how to ensure transparent relationships with their agencies.

According to the ANA, GroupM’s lawsuit and Ebiquity’s pending report are unrelated. GroupM declined to comment.

The suit was filed on May 31 in the High Court of London. Four GroupM agencies (MediaCom, Maxus, Mindshare and MEC) are involved in the suit, as they have a more granular view on exactly which documents were sent to FirmDecisions, and GroupM says it will seek damages dependent on case findings.

FirmDecisions filed defense on Tuesday denying wrongdoing.

Tagged in:

Must Read

Upfronts Day One: Publishers Jostle For Position As Performance Drivers

And that’s a wrap on Day One of upfronts 2026! AdExchanger Senior Editors Alyssa Boyle and Victoria McNally traversed the island of Manhattan on Monday to scope out upfront presentations by NBCUniversal, Fox and Amazon.

Viant Sees A Growth Wave Coming, But First Marketers Must Really Ditch Walled Garden Ad Tech

Viant’s modest growth story took a backseat to a far louder claim: that fed-up advertisers are finally ready to ditch the rigged economics of Big Tech’s walled gardens.

Amazon’s Interactive CTV Ad Suite Now Includes Creative Optimization

Amazon Ads expects this year’s television upfronts to be an outcomes-focused affair. That may explain why the company preempted its Monday evening presentation by announcing the launch of a new ad product called Dynamic TV Creative.

Privacy! Commerce! Connected TV! Read all about it. Subscribe to AdExchanger Newsletters

Is Agentic Commerce An Oasis Or Mirage?

For companies like Shopify, Criteo and Instacart – and even for giants like Amazon and Walmart – figuring out if the agentic oasis is real or a mirage is their priority No. 1.

PubMatic’s Agentic AI Is Going Beyond Direct Deals

PubMatic has run more than 30 fully autonomous, end-to-end agentic campaigns through the SSP’s AgenticOS platform, in addition to more than 1,000 direct publisher deals.

The Trade Desk Has A Grand Vision, But Needs A New Breed Of CMO To Make It A Reality

TTD CEO Jeff Green laid out the DSP’s plan for winning in a new world of advertising that – AI aside – necessitates major changes in how marketers behave.