Stockton Cardiology Medical Group 2025 Data Breach
Healthcare / Medical
Stockton Cardiology Medical Group 2026 Data Breach
A medical service in the healthcare sector.
Confirmed · ObscureIQ Intelligence
Breach Risk Index i
65/100
Lower riskHigher risk
High and current: recent, valuable data circulating on the dark web now.
Data Sensitivity i
StandardExposed data is largely lower-sensitivity. Standard identity-protection precautions are advised.
99KRecords
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
AddressPhysical address
Breach Summary
Stockton Cardiology Medical Group confirmed a data breach in early 2026 after a ransomware group claimed responsibility for stealing patient and business files. The incident stems from a phishing attack that began on December 15, 2025, which eventually allowed unauthorized access to the organization's network. Incident Timeline and Discovery December 15, 2025: Employees received suspicious phishing emails. Although some were deleted, an attacker successfully gained access to internal systems.
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…
99K records analyzed
About Stockton Cardiology Medical Group
Stockton Cardiology Medical Group is a medical service in the healthcare sector.
Why They Hold Your Data
Stockton Cardiology Medical Group is a medical service in the healthcare sector. Services like this typically hold email addresses, names, physical addresses through account registration and normal operations.
Recent Developments
The Stockton Cardiology Medical Group dataset circulated publicly; treat as part of the standing exposure landscape.
Data Points Exposed
5 verified field types
Date of Birth High
Email Address
Full Name
Phone Number
Physical address High
Breach Impact
The exposure created downstream fraud and phishing risk for those affected and drew scrutiny of Stockton Cardiology Medical Group's data protection.
Exploitation & Downstream Threats
• Identity verification bypass using name + date of birth combination | • 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
- Treat the home address as exposed: review mail and package handling and physical-security routines, and brief household staff to verify unusual requests.
- 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 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.
- ThreatWatch tuned to this incident's identifiers and misuse pattern (impersonation and targeting patterns, not generic credential monitoring).
G
Threat Actor: GenesisConfidence: Medium
Motivation: Financial extortion
An emerging ransomware group first observed late 2025 using double extortion, targeting small-to-mid US organizations in business services, healthcare, manufacturing, financial services and construction; 90+ claimed victims by mid-2026.
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