Incident Score: Analysis & Impact (ADA1780612330)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Adams Health'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 Adams Health 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 Adams Health breach identified under incident ID ADA1780612330.
The analysis begins with a detailed overview of Adams Health's information like the linkedin page: https://www.linkedin.com/company/adams-health, the number of followers: 759, the industry type: Hospitals and Health Care and the number of employees: 180 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 742 and after the incident was 669 with a difference of -73 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 Adams Health and their customers.
On 11 May 2026, Adams Health Network disclosed Data Breach issues under the banner "Adams Health Network Data Breach Affecting 5,305 Patients".
Adams Health Network disclosed a data breach impacting 5,305 individuals in the U.S.
The disruption is felt across the environment, affecting Employee email account, and exposing Personally identifiable information (PII) and protected health information (PHI), with nearly 5305 records at risk.
In response, and stakeholders are being briefed through Notified affected patients and set up a dedicated call center.
The case underscores how Completed, and recommending next steps like Monitor healthcare accounts for suspicious activity and enroll in credit monitoring services, with advisories going out to stakeholders covering Affected patients notified and advised to monitor accounts for suspicious activity.
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 (95%), supported by evidence indicating incident stemmed from a phishing attack on December 22, 2025 and Phishing: Spearphishing Link (T1566.002) with high confidence (90%), supported by evidence indicating employee’s email account was compromised after interacting with a fraudulent link. Under the Execution tactic, the analysis identified User Execution (T1204) with high confidence (90%), supported by evidence indicating employee’s email account was compromised after interacting with a fraudulent link and User Execution: Malicious Link (T1204.001) with high confidence (90%), supported by evidence indicating employee interacted with a fraudulent link. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with moderate confidence (50%), supported by evidence indicating unauthorized access to an employee email account (implied) and Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (60%), supported by evidence indicating compromised account contained sensitive patient data (PII/PHI). Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (80%), supported by evidence indicating employee’s email account was compromised and accessed for ~3 months. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating compromised account contained names, SSNs, medical diagnoses, insurance details, Email Collection (T1114) with moderate to high confidence (80%), supported by evidence indicating employee email account was compromised and accessed, and Email Collection: Remote Email Collection (T1114.002) with moderate to high confidence (70%), supported by evidence indicating unauthorized access to email account for ~3 months. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating breach impacted 5,305 patients with PII/PHI exposed and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating unauthorized access to email account (cloud-based implied). Under the Defense Evasion tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (80%), supported by evidence indicating unauthorized access went undetected for nearly three months and Hide Artifacts (T1564) with moderate confidence (60%), supported by evidence indicating breach went undetected until March 12, 2026. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no evidence of data destruction, but PII/PHI was exposed and Data Manipulation: Transmitted Data Manipulation (T1565.002) with lower confidence (40%), supported by evidence indicating potential misuse of exposed PII/PHI for identity theft. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Adams Health Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/adams-health/incident/ADA1780612330
- Adams Health CyberSecurity Rating page: https://www.rankiteo.com/company/adams-health
- Adams Health Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/ada1780612330-adams-health-network-breach-december-2025/
- Adams Health CyberSecurity Score History: https://www.rankiteo.com/company/adams-health/history
- Adams Health CyberSecurity Incident Source: https://www.claimdepot.com/data-breach/adams-county-memorial-hospital-2026
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/Images/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf