Hackers took certain files from subsidiary's network, some contained information related to suppliers, clients and employees

Synopsis

In October 2025, Dentsu, a global advertising and public relations firm, disclosed a "security incident" affecting its U.S.-based subsidiary, Merkle. The incident involved unauthorized access to Merkle's network, leading to the exfiltration of certain...

Companies

  • Dentsu International

We've done the analysis so you can make the decisions

Search our repository of 8,564 high-quality, objective, peer-reviewed case studies, impacting 8,576 companies and resulting in $49,333,562,270 in net costs

  • Sophisticated search & querying
  • Financial data extracted
  • Key data points captured
Want to try before you buy? You can sample one of our case studies for free here