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Analyze » Stockton Cardiology Medical Group » STO1774305417

Incident Score: Analysis & Impact (STO1774305417)

The details regarding individual company incidents & reports gives you full view from every side.

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-67
Company Score Before Incident760 / 1000
Company Score After Incident693 / 1000
Company LinkView Stockton Cardiology Medical Group Profile
INCIDENT NUMBERSTO1774305417
Type of Cyber IncidentBreach
ATTACK VECTORSuspicious emails (likely phishing)
DATA EXPOSED645GB of data
INCIDENT DATE14/12/2025
STATUSOngoing

Key Highlights From The Incident Analysis

  • Timeline of Stockton Cardiology Medical Group's Breach and lateral movement inside company's environment.
  • Overview of affected data sets, including SSNs and PHI, and why they materially increase incident severity.
  • How Rankiteo’s incident engine converts technical details into a normalized incident score.
  • How this cyber incident impacts Stockton Cardiology Medical Group Rankiteo cyber scoring and cyber rating.
  • Rankiteo’s MITRE ATT&CK correlation analysis for this incident, with associated confidence level.

Full Incident Analysis Transcript

In this Rankiteo incident briefing, we review the Stockton Cardiology Medical Group breach identified under incident ID STO1774305417.

The analysis begins with a detailed overview of Stockton Cardiology Medical Group's information like the linkedin page: https://www.linkedin.com/company/stockton-cardiology-medical-group, the number of followers: 72, the industry type: Medical Practices and the number of employees: 53 employees

After the initial compromise, the video explains how Rankiteo's incident engine converts technical details into a normalized incident score. The incident score before the incident was 760 and after the incident was 693 with a difference of -67 which is could be a good indicator of the severity and impact of the incident.

In the next step of the video, we will analyze in more details the incident and the impact it had on Stockton Cardiology Medical Group and their customers.

On 17 January 2026, Stockton Cardiology Medical Group disclosed Data Breach issues under the banner "Stockton Cardiology Medical Group Data Breach".

Stockton Cardiology Medical Group suffered a significant data breach after detecting suspicious emails.

The disruption is felt across the environment, and exposing 645GB of data.

In response, moved swiftly to contain the threat with measures like Suspicious emails deleted, and stakeholders are being briefed through Reported to California Attorney General on 2026-03-20.

The case underscores how Ongoing, with advisories going out to stakeholders covering Affected individuals may be eligible for compensation due to potential damages such as identity monitoring costs, emotional distress, or financial losses.

Finally, we try to match the incident with the MITRE ATT&CK framework to see if there is any correlation between the incident and the MITRE ATT&CK framework.

The MITRE ATT&CK framework is a knowledge base of techniques and sub-techniques that are used to describe the tactics and procedures of cyber adversaries. It is a powerful tool for understanding the threat landscape and for developing effective defense strategies.

MITRE ATT&CK® Correlation Analysis

Rankiteo's analysis has identified several MITRE ATT&CK tactics and techniques associated with this incident, each with varying levels of confidence based on available evidence. Under the Initial Access tactic, the analysis identified Phishing (T1566) with high confidence (90%), supported by evidence indicating detecting suspicious emails on December 15, 2025 and Phishing: Spearphishing Attachment (T1566.001) with moderate to high confidence (70%), supported by evidence indicating suspicious emails (likely phishing). Under the Execution tactic, the analysis identified User Execution (T1204) with moderate to high confidence (70%), supported by evidence indicating suspicious emails were quickly deleted. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with moderate confidence (50%), supported by evidence indicating unauthorized access had occurred and Credentials from Password Stores (T1555) with moderate confidence (60%), supported by evidence indicating files potentially removed from the organization’s systems. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating 645GB of data, including healthcare records, personal and financial information and Data from Network Shared Drive (T1039) with moderate to high confidence (70%), supported by evidence indicating internal operational files exfiltrated. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating 645GB of data exfiltrated by GENESIS and Exfiltration Over Web Service (T1567) with moderate confidence (60%), supported by evidence indicating data publicly disclosed on the dark web. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (40%), supported by evidence indicating files potentially removed from the organization’s systems and Defacement (T1491) with moderate confidence (50%), supported by evidence indicating data publicly disclosed on the dark web by GENESIS. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Phishing (90%)
Phishing: Spearphishing Attachment (70%)
Execution
User Execution (70%)
Credential Access
Brute Force (50%)
Credentials from Password Stores (60%)
Collection
Data from Local System (90%)
Data from Network Shared Drive (70%)
Exfiltration
Exfiltration Over C2 Channel (90%)
Exfiltration Over Web Service (60%)
Impact
Data Destruction (40%)
Defacement (50%)

Sources & References