Lewis Drug 2026 Data Breach
Healthcare / Pharmacy & Retail / Consumer
Lewis Drug 2026 Data Breach: Pharmacy Customer PHI Exposed via AiLock Ransomware
Regional pharmacy and retail chain across South Dakota, Iowa and Minnesota.
Confirmed · ObscureIQ Intelligence
Breach Risk Index i
100/100
Lower riskHigher risk
High and current: recent, valuable data circulating on the dark web now.
Data Sensitivity i
ElevatedExposed data raises the risk of fraud, targeting, and impersonation. Proactive steps are warranted.
23k rowsRecords
2026Year
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
PHI / MedicalMedical Diagnosis
Breach Summary
On March 3, 2026 the AiLock ransomware group claimed a breach of Lewis Drug, stating it obtained about 110 GB of data. Exposed data included customer names, Social Security numbers, dates of birth, contact information and confidential medical information; class litigation followed.
Full threat analysis, exploitation vectors, and principal guidance below.
10 additional sections · verified field analysis · defensive doctrine
Querying breach corpus…
Cross-referencing exposed field types…
Resolving threat-actor attribution…
Compiling principal risk advisory…
23k rows records analyzed
About Lewis Drug
Lewis Drug is a regional pharmacy and retail chain operating dozens of stores across South Dakota, Iowa and Minnesota, providing prescription, clinical and retail services.
Why They Hold Your Data
A pharmacy chain holds customer identity and contact data, dates of birth, SSNs, and prescription and other confidential medical information (PHI).
Recent Developments
Lewis Drug continues to operate. It faced lawsuits after the AiLock ransomware group claimed a March 2026 breach.
Data Points Exposed
3 verified field types
Full Name
Medical Diagnosis Critical
Social Security Number Critical
Breach Impact
As a pharmacy handling PHI, the breach carries HIPAA notification and litigation exposure across its multi-state customer base.
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
- Freeze credit at all three bureaus and monitor for new-account and tax-refund fraud.
- Watch for medical-benefit fraud and health-themed phishing that references real provider relationships.
- Do not use unofficial 'am I affected' lookups; several are themselves harvesting operations.
How ObscureIQ Can Help
- Corpus confirmation: determine whether and where the principal (plus household and staff) appear in this dataset and which specific fields are exposed for them.
- Exposure mapping: cross-reference the exposed identifiers against broker-available data to size and prioritize the principal's wider footprint.
- ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).
A
Threat Actor: AiLockConfidence: Medium
Motivation: Financial extortion
A RaaS group first identified March 2025 using double extortion; threatens to report breaches to regulators or hand data to competitors if unpaid, giving victims a 72-hour to 5-day window.
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