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. 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.
Signal context
First seen: Apr 22, 2025
Last updated: Jun 26, 2026
Status: Public signal
Key points
- Network intrusion discovered on February 13, 2025.
- Publicly reported on April 22, 2025.
- Exposed data of over 245,000 patients.
Signal analysis
BetaThis 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.
Sector: Finance and Insurance
Likely country: Location not provided
Watch ransomware, endpoint compromise and business interruption exposure.
- Source type: outside the affected organization
Impact area: Availability
- 21 signals in the same sector
- 22 signals with the same likely impact area
- 1 signal linked to this organization/domain
External sources
Cyber News Roundup April 25th 2025 - Integrity360https://www.integrity360.com/en-us/resources/threat-intel-roundup/threat-intel-roundup-4-25-25Public source from integrity360.com.
April 2025: Major Cyber Attacks, Ransomware Attacks and Data Breacheshttps://www.cm-alliance.com/cybersecurity-blog/april-2025-major-cyber-attacks-ransomware-attacks-and-data-breachesPublic source from cm-alliance.com.
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