Cookeville Regional Medical Center 2025 Data Breach

Cookeville Regional Medical Center Hospital Breach (2025): Patient SSN & Home Address Exposed

Healthcare provider · Hospital and clinical services · Regional medical center · USA

Cookeville Regional Medical Center Hospital Breach (2025): Patient SSN & Home Address Exposed

Regional medical center providing hospital and specialty care.

Confirmed · ObscureIQ Intelligence
Breach Risk Index i
67/100
Lower riskHigher risk
High and current: recent, valuable data circulating on the dark web now.
Data Sensitivity i
Elevated
Exposed data raises the risk of fraud, targeting, and impersonation. Proactive steps are warranted.
21KRecords
2025Year

The Breach Risk Index (BRI) is a proprietary 0–100 score rating how dangerous a breach is right now, based on how recently the data has been circulating on the dark web and how valuable it is to attackers.

Crucial data exposed
SSNSocial Security Number
AddressPhysical address
Classification Tags
RhysidaRansomware / ExtortionHealthcareMedical2025

Breach Summary

Cookeville Regional Medical Center, a 309-bed hospital in Cookeville, Tennessee, suffered a ransomware attack between July 11 and July 14, 2025. The hospital discovered the incident on July 14 when the attack caused a technical outage of computer systems. The Rhysida ransomware-as-a-service group claimed responsibility on August 2, 2025 by listing CRMC on its dark-web leak site, demanding a 10 Bitcoin ransom worth approximately \$1.15 million at the time. After failing to find a buyer, Rhysida published the stolen data freely; the published archive reportedly comprised approximately 538 gigabytes across more than 372,000 files.\n\nThe publicly circulating dataset analysed by breach-tracking services included approximately 13,300 unique Social Security numbers, 20,500 street addresses, 8,500 phone numbers, and 7,700 email addresses. The CRMC formal disclosure to the Maine Attorney General put the total individuals affected at 337,917. Compromised fields per the official disclosure included names, dates of birth, addresses, Social Security numbers, driver's license numbers, financial account numbers, medical treatment information, medical record numbers, and health insurance policy information. Notification letters were mailed beginning April 14, 2026.\n\nFor affected patients, the practical risk profile combines severe identity-fraud exposure with hospital-specific risks. The combination of name, date of birth, address, Social Security number, and driver's license number is a strong base for synthetic identity fraud and fraudulent credit applications. Financial account number exposure raises direct payment-fraud risk. Inclusion in the dataset confirms a hospital-care relationship and may include sensitive treatment information that supports medical-themed scams. Affected patients should accept the Experian identity-theft protection offered by CRMC, freeze credit at all three U.S. bureaus, monitor financial accounts and health-insurance statements closely, and treat unsolicited contact referencing CRMC or any past hospital visit with caution.

Full threat analysis, exploitation vectors, and principal guidance below.

11 additional sections · verified field analysis · defensive doctrine

Querying breach corpus…
Cross-referencing exposed field types…
Resolving threat-actor attribution…
Compiling principal risk advisory…

21K records analyzed

About Cookeville Regional Medical Center

Cookeville Regional Medical Center (CRMC) is a 309-bed regional hospital based in Cookeville, Tennessee, serving the Upper Cumberland region across fourteen counties. The hospital provides emergency care, inpatient services, and a broad set of outpatient programs, with the surrounding system handling approximately 47,000 emergency room visits, 13,000 inpatient admissions, and nearly 200,000 outpatient visits annually. CRMC employs around 2,660 staff including 285 physicians. As a HIPAA-regulated regional hospital, CRMC maintains substantial volumes of protected health information including patient identity, insurance, billing, diagnostic, and treatment records across its hospital and outpatient operations.

Why They Hold Your Data

Regional medical centers collect patient identity, contact, insurance, billing, appointment, and clinical records across hospital and administrative workflows.

Recent Developments

CRMC discovered the ransomware attack on July 14, 2025 when unusual network activity caused a technical outage. The hospital reported the incident publicly on July 15, 2025, secured systems with assistance from outside cybersecurity experts, and notified law enforcement. The Rhysida ransomware-as-a-service group claimed responsibility on August 2, 2025 by listing CRMC on its dark-web leak site and demanding a ransom of 10 Bitcoin (worth approximately \$1.15 million at the time). Rhysida subsequently published the stolen data freely after failing to find a buyer. CRMC mailed breach notification letters to affected individuals on April 14, 2026, approximately nine months after detection. The hospital is offering twelve months of complimentary identity theft protection through Experian.

Data Points Exposed

4 verified field types
Email Address
Phone Number
Physical address High
Social Security Number Critical

Breach Impact

CRMC faces significant institutional exposure given the size of the affected population relative to its regional service area. Federal HIPAA notification obligations, an Office for Civil Rights review, multistate attorney-general filings, and active class-action litigation discussions are all underway. The CRMC incident ranks as the eighth-largest U.S. healthcare ransomware breach of 2025 by records compromised. Operationally, the ransomware attack caused a technical outage that disrupted scheduling and X-ray result delivery for several days, with reported delays for outpatient appointments and surgeries. The reputational impact is concentrated within the Upper Cumberland region of Tennessee, where CRMC is the dominant regional hospital and patient retention is unusually consequential.

Exploitation & Downstream Threats

• Identity theft and synthetic identity construction using government-issued IDs | • SIM swap attacks where phone numbers are present | • Targeted phishing campaigns using exposed email addresses | • Doxxing risk from physical address exposure

Principal Risk Advisory

What this means for a principal

A healthcare-linked breach: exposure ties a named individual to a provider relationship and, where clinical or insurance data is present, to conditions and treatment. For a high-profile principal this is targeting-grade, not merely identity-theft-grade: the combination lets an adversary locate, impersonate, or pressure the principal with little additional work.

What You Should Do

  1. Freeze credit at all three bureaus and monitor for new-account and tax-refund fraud.
  2. Treat the home address as exposed: review mail and package handling and physical-security routines, and brief household staff to verify unusual requests.
  3. Guard against SIM-swap and vishing: add a carrier port-out PIN and verify any 'support' calls independently.
  4. Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.

How ObscureIQ Can Help

  1. Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
  2. Exposure mapping and footprint neutralization: cross-reference against broker-available data and suppress still-removable elements, prioritizing address and phone, since this record re-seeds broker networks.
  3. ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).
R
Threat Actor: RhysidaConfidence: High
Ransomware-as-a-service group

Motivation: Financial extortion
A ransomware-as-a-service group using double extortion. CISA reporting notes targeting across education, manufacturing, IT, government, and healthcare.

Read the full threat-actor profile →

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