Dentsu Discloses Data Breach at Merkle Unit

Japanese advertising conglomerate Dentsu has confirmed a cybersecurity breach at its U.S.-based subsidiary Merkle, exposing sensitive information belonging to employees and clients. Dentsu discloses data breach details following an internal investigation that identified unauthorized access to company systems. The company has not confirmed the number of affected individuals or the nature of the compromised data.

Merkle, a data-driven performance marketing firm, is working with cybersecurity experts to assess the full impact and strengthen its defenses. Law enforcement agencies have been notified, and steps are underway to notify impacted parties as required. Dentsu discloses data breach impacts as part of its broader commitment to transparency and client trust.

The company has not revealed whether any ransomware or malicious demands were involved. Dentsu stated that it continues to monitor the situation closely and will provide updates as more information becomes available.

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