Bell Ambulance hit by ransomware, exposing data of over 245,000 patients
Milwaukee-based Bell Ambulance reported a network intrusion, discovered on February 13, 2025, which was publicly reported on April 22, 2025.
Key points
- Network intrusion discovered on February 13, 2025.
- Publicly reported on April 22, 2025.
- Exposed data of over 245,000 patients.
Connected intelligence
Signal brief
Follow the organization, likely method and potential impact to explore connected Shadow Tier intelligence.
Organization
- Published
- Apr 22, 2025
- Updated
- Jun 26, 2026
- Confidence
- Medium
- Evidence
- 2 sources
Structured assessment
Signal analysis
This analysis groups the signal by industry, likely incident action and impacted security area. It helps compare this signal with other published signals without treating the labels as final determinations.
Threat source
Watch ransomware, endpoint compromise and business interruption exposure.
Business impact
- Impact area
- Availability
Mentioned entities
Quick context
Questions about this signal
What happened in this signal?
Milwaukee-based Bell Ambulance reported a network intrusion, discovered on February 13, 2025, which was publicly reported on April 22, 2025. Hackers gained access to files containing names, dates of birth, Social Security numbers, medical records, and financial data of over 245,000 individuals. The Medusa ransomware group claimed responsibility for the attack, stating it exfiltrated over 200GB of data.
When was this signal reported?
Shadow Tier lists Apr 22, 2025 as the signal date.
Which organization is connected to this signal?
Bellambulance is the organization connected to this public signal.
Explore BellambulanceWhich attack pattern is relevant?
This signal is connected to current ransomware incidents based on its reported incident context.
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