Acadian Ambulance Data Breach
Status: Confirmed
Breach Intelligence Summary
Entity: Acadian Ambulance · Actor: Unknown · Source: DataBreach.com / ObscureIQ intelligence
Attack: Ransomware via Network intrusion / ransomware deployment
Timeline: Breach (Jun, 2024) · Reported (May, 2025) · Leak (5/8/25)
Exposure: 2.5M+ records · Social Security Number, Email, Phone Number, Name
Status: Confirmed · Risk: High (Identity theft + Phishing / SIM swap)
Summary
Acadian Ambulance Breach: Patient Data Exposed in Ransomware Attack In June 2024 Acadian Ambulance Service a major medical transportation provider detected suspicious activity within its computer network signaling the start of a significant data breach. Attackers gained unauthorized access to Acadian’s systems between June 19 and June 21 2024. During this window the threat actors exfiltrated files and folders containing sensitive patient information. The notorious Daixin Team a ransomware group known for targeting the healthcare sector claimed responsibility for the attack. They alleged to have stolen 10 million unique records and demanded a $7 million ransom which Acadian reportedly refused to pay offering a significantly smaller counterpayment of $173 000. The compromised database reportedly held a vast amount of patient-related data including names addresses Social Security numbers dates of birth and detailed medical information collected during the patient intake process. The breach was discovered internally by Acadian on or around June 21 2024 when they became aware of the suspicious activity. Acadian Ambulance Service Inc. founded in 1971 is a Louisiana-based medical care and transportation service. It operates a large fleet of ambulances and provides emergency and non-emergency transport air services and at-home medical care across Louisiana Texas Mississippi and Tennessee serving millions of residents. , Breach Unveiled
June 19-21 2024: Unauthorized actors access Acadian Ambulance’s network and exfiltrate data. June 21 2024: Acadian Ambulance detects suspicious activity on its network. June 22 2024: Ransom negotiations reportedly begin between Daixin Team and Acadian. July 2024 (early): Reports surface that Acadian Ambulance has been targeted in a cyberattack. July 23 2024: The Daixin Team lists Acadian Ambulance on its data leak site claiming to possess data on 10 million individuals and demanding a $7 million ransom. August 20 2024: Acadian Ambulance reports the breach to the U.S. Department of Health and Human Services (HHS) Office for Civil Rights stating that nearly 2.9 million individuals’ protected health information was involved. November 2024: Acadian Ambulance begins sending notification letters to affected individuals. January 2025 (late): Attorneys for Acadian Ambulance file to dismiss a consolidated class-action lawsuit related to the breach. May 2025: A federal magistrate judge states a ruling on the dismissal request will come at a later date.
Acadian’s Response and Remediation Following the detection of the breach Acadian Ambulance stated it immediately took steps to secure its systems and initiated an investigation with the help of third-party cybersecurity specialists. The company publicly acknowledged the “network security incident” and confirmed that the attackers accessed a server containing protected health information. Acadian reported that its swift response including shutting down affected systems and activating backups prevented a negative impact on patient care and ambulance dispatching. The investigation aimed to determine the full scope of the incident and identify the individuals whose information may have been compromised. Acadian Ambulance began notifying affected individuals in November 2024 offering complimentary credit monitoring and identity theft protection services through CyEx. The company also reported the event to federal law enforcement and relevant regulatory authorities. As part of its ongoing commitment to data privacy Acadian stated it is reviewing and updating its policies procedures and processes to reduce the risk of similar future incidents. Despite these measures Acadian is facing a consolidated class-action lawsuit which it is currently seeking to dismiss arguing that plaintiffs have not proven actual harm from the data leak. The investigation into the full extent and impact of this recent data breach is ongoing.
About Acadian Ambulance
Acadian Ambulance is the organization affected by this breach. User data may have been generated through account creation, service usage, or business operations.
If you have interacted with Acadian Ambulance in any capacity, your data may be included in this breach.
Threat Actor: Unknown
The threat actor responsible for this breach has not been publicly identified or confirmed at this time.
- Network intrusion / ransomware deployment
Breach Exploitation Status
High
Status
Detected
Possible
Detected
Possible
Unknown
Indefinite (critical identifiers)
SSNs and government IDs never expire. This data can be used for identity theft years or decades after exposure.
Data Points Exposed
Dark Web Verification
Status: Confirmed
- Dataset containing approximately 2.5M+ records has been identified in breach intelligence sources.
- The data is indexed and searchable across breach notification platforms.
Impact
This breach carries high risk due to the nature of exposed data fields and the scale of affected records.
- Targeted phishing referencing Acadian Ambulance accounts or services
- Identity theft using exposed Social Security Numbers
- SIM-swap attempts where phone numbers are present
- Data broker enrichment and resale
Recommendations for Impacted Individuals
If you believe your information may be included:
Non-clients may request a breach impact review.
Acadian Ambulance account updates
Password reset requests
Verify directly through official channels.
Email compromise is often the first pivot point.
Frequently Asked Questions
In Jun, 2024, Acadian Ambulance experienced a data breach that resulted in the exposure of approximately 2.5M+ records containing personal information.
The exposed data includes Social Security Number, Email, Phone Number, Name.
Approximately 2.5M+ records were affected based on current breach intelligence.
Yes. This breach is treated as confirmed based on data observed in breach intelligence platforms.
Data circulation has been detected across breach-sharing channels. Downstream exploitation risk exists based on the nature of the exposed fields.
Rotate passwords associated with Acadian Ambulance, enable multi-factor authentication on email and financial accounts, and monitor for suspicious activity.
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Corporate Accountability
Organizations that collect personal data have a duty to implement reasonable safeguards and to notify affected individuals when breaches occur.
Scope assessments may evolve as investigations continue. Users should not rely solely on early estimates when making risk decisions.
ObscureIQ Advisory
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- A public-facing individual
- A high-profile executive
- A customer of Acadian Ambulance
- Or simply concerned about credential reuse
We can confirm whether your information is circulating and evaluate downstream threat vectors.