Dentsu Group Inc.

10/28/2025 | Press release | Distributed by Public on 10/27/2025 23:02

Cyber Incident Statement—International Markets

We detected unusual activity affecting part of Merkle's network. Upon discovery, we acted swiftly by initiating our incident response protocols, which included proactively taking certain systems offline and implementing measures to contain the issue.

Our teams are actively investigating the incident and we have already brought our systems back online. To assist in our investigation and response, third-party cyber incident experts with experience in similar situations have been engaged and law enforcement has been notified.

The activity doesn't impact network systems in Japan. Currently, financial impact to the business is not known.

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Contact:NEW YORK Jeremy Miller: +1 917-710-1285, [email protected] LONDON Matt Cross: +44 7446 798 723 [email protected] Jumpei Kojima: [email protected]

Dentsu Group Inc. published this content on October 28, 2025, and is solely responsible for the information contained herein. Distributed via Public Technologies (PUBT), unedited and unaltered, on October 28, 2025 at 05:02 UTC. If you believe the information included in the content is inaccurate or outdated and requires editing or removal, please contact us at [email protected]