Russian Ransomware Group DeadLock Targets Madrid-Based Biopharmaceutical Company Diater in Double Extortion Attack

The Russian ransomware group DeadLock has listed Diater, a Madrid-based biopharmaceutical company founded in 1999, as a victim on the dark web, employing a double extortion tactic. The breach affects sensitive data, including 10 years of medical records belonging to patients and healthcare professionals managed by the company. No specific technical details, such as attack vectors or compromised systems, were disclosed in the report. The incident highlights the exposure of highly confidential health data, though the full extent of the impact remains unclear. The disclosure was reported by Miguel Gomez on August 1, 2026.