Incident Score: Analysis & Impact (THE1768961826)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of The Cigna 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 The Cigna 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 The Cigna Group breach identified under incident ID THE1768961826.
The analysis begins with a detailed overview of The Cigna Group's information like the linkedin page: https://www.linkedin.com/company/the-cigna-group, the number of followers: 175710, the industry type: Hospitals and Health Care and the number of employees: 21598 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 787 and after the incident was 731 with a difference of -56 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 The Cigna Group and their customers.
On 17 December 2024, The Cigna Group Inc. disclosed Data Breach issues under the banner "Cigna Faces Class Action Lawsuit Over Data Breach Exposing Patient Information".
A class action lawsuit filed against The Cigna Group Inc.
The disruption is felt across the environment, affecting Vendor network, and exposing Personally identifiable information (PII) and protected health information (PHI).
In response, and stakeholders are being briefed through Delayed notifications.
The case underscores how Ongoing.
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 Supply Chain Compromise (T1195) with high confidence (90%), supported by evidence indicating unauthorized actor accessed the network of one of Cigna’s vendors and Trusted Relationship (T1199) with moderate to high confidence (80%), supported by evidence indicating breach occurred via a vendors network. Under the Credential Access tactic, the analysis identified Steal Application Access Token (T1528) with moderate confidence (60%), supported by evidence indicating vendor network compromise may imply stolen credentials or tokens. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating names, healthcare IDs, dates of service, treatment costs, claims numbers and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating pII and PHI exposed via vendor network. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating data exfiltration confirmed; exposed on the dark web and Exfiltration Over Web Service (T1567) with moderate confidence (60%), supported by evidence indicating data surfaced on the dark web. Under the Impact tactic, the analysis identified Defacement (T1491) with lower confidence (40%), supported by evidence indicating brand reputation impact due to breach and Data Manipulation: Transmitted Data Manipulation (T1565.002) with moderate confidence (50%), supported by evidence indicating identity theft risks for affected patients. Under the Defense Evasion tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unauthorized access via vendor network implies valid accounts and Hide Artifacts: Hidden Users (T1564.002) with moderate confidence (50%), supported by evidence indicating delayed breach detection (November 2025). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- The Cigna Group Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/the-cigna-group/incident/THE1768961826
- The Cigna Group CyberSecurity Rating page: https://www.rankiteo.com/company/the-cigna-group
- The Cigna Group Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/the1768961826-the-cigna-group-inc-breach-october-2024/
- The Cigna Group CyberSecurity Score History: https://www.rankiteo.com/company/the-cigna-group/history
- The Cigna Group CyberSecurity Incident Source: https://topclassactions.com/lawsuit-settlements/lawsuit-news/cigna-sued-after-data-breach-exposes-health-and-claims-information-of-patients/
- 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