Confidentiality concerns drive WPP to request sealing of Sony investigation details in a high-stakes legal battle. The company cites potential improper information sourcing and attorney-client privilege.
Media and publishing professionals tracking legal risks in client relationships are watching closely as WPP seeks to seal sensitive information in a major wrongful termination case. The company has filed court papers in New York State Supreme Court demanding that all references to a confidential Sony Pictures investigation be removed from public view in Richard Foster's amended complaint.
Richard Foster, a former GroupM executive, recently updated his lawsuit against WPP, alleging he was fired for exposing the company's handling of client rebates. In his amended filing, Foster described a previously undisclosed Sony Pictures probe that he claims supports his allegations. According to Foster, the Sony investigation found that in 2023, WPP returned about $110 million in rebates to clients in China but kept $350 million in discounts from sellers. Foster also alleged similar practices occurred in other countries.
WPP responded by arguing that the Sony investigation was confidential and that Foster's refusal to reveal his source suggests the information may have been obtained improperly. The company pointed to a nondisclosure agreement Foster signed, which prohibits sharing confidential employment-related information. WPP also requested that references to Foster's conversations with Nicola McCormick, WPP's general counsel, be sealed, citing attorney-client privilege. The company stated that only defendants can waive this privilege, not Foster, and accused him of violating it to disadvantage WPP in the proceedings.
Foster's complaint further alleges that some WPP executives agreed with his assessment that GroupM/WPP Media's rebate policies were illegal or unsustainable. WPP, however, dismissed Foster's whistleblower claims, characterizing the lawsuit as an attempt to secure a large payout. Foster is seeking $100 million in damages. WPP indicated it will address what it calls deficiencies in Foster's amended complaint in a forthcoming motion to dismiss. In the meantime, WPP insists that privileged and confidential information must be sealed to prevent harm to the company and its clients.
This legal dispute highlights the growing complexity of confidentiality and privilege in digital-era lawsuits, especially as sensitive information can surface in unexpected ways. Similar concerns about the intersection of legal filings and confidential data have been raised in other cases, such as when a Connecticut plaintiff embedded secret AI instructions in court documents, as reported in a recent investigation into hidden AI prompt injection in legal filings.
WPP, headquartered in London, is one of the world's largest advertising and communications groups. As of 2025, the company reported annual revenues exceeding $17 billion and employed more than 100,000 people globally. WPP's client roster includes major brands across technology, entertainment, and consumer sectors, making its legal and operational decisions closely watched by the media and marketing industries.
