Breachesby GlyphMerkle
Disclosed Oct 28, 2025Confirmed
Dentsu subsidiary Merkle breach exposes staff and client data
Dentsu disclosed that abnormal network activity at its US-based subsidiary Merkle led to exposure of staff and client data and forced some systems offline.
What is known
| People affected | Not stated in the sources we have |
|---|---|
| Disclosed | Oct 28, 2025 |
| Attack | Hacking |
| Data exposed | EmploymentOther |
| Sector | Media · US |
| Status | Confirmed |
Sources
Notices filed
History of this record
First recordedby seedSource
First seen 2026-09-25 (Research), confirmed by Research. Record counts are as reported. Not legal advice.