Incident Score: Analysis & Impact (ANT0192801112125)
The details regarding individual company incidents & reports gives you full view from every side.
Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Anthem Blue Cross and Blue Shield'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 Anthem Blue Cross and Blue Shield 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 Anthem Blue Cross and Blue Shield breach identified under incident ID ANT0192801112125.
The analysis begins with a detailed overview of Anthem Blue Cross and Blue Shield's information like the linkedin page: https://www.linkedin.com/company/anthembcbs, the number of followers: 170665, the industry type: Insurance and the number of employees: 10469 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 692 and after the incident was 624 with a difference of -68 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 Anthem Blue Cross and Blue Shield and their customers.
On 19 November 2025, Anthem, Inc. disclosed Data Breach issues under the banner "Anthem, Inc. Data Breach (2025)".
On Nov.
The disruption is felt across the environment, and exposing PII (Personally Identifiable Information) and PHI (Protected Health Information), with nearly 1,162 (in Massachusetts; total unknown) records at risk.
In response, and stakeholders are being briefed through Notification letters to impacted individuals (planned).
The case underscores how Ongoing, and recommending next steps like Monitor credit reports for affected individuals (complimentary credit monitoring services may be offered), Enhance cybersecurity measures for PII/PHI protection (e.g., encryption, access controls) and Conduct thorough post-incident analysis to identify root causes and prevent future breaches, with advisories going out to stakeholders covering Notification letters planned for impacted individuals; credit monitoring services may be offered.
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 Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (85%), supported by evidence indicating compromised data includes names, addresses, dates of birth, Social Security numbers, medical records, and driver’s license numbers. Under the Exfiltration tactic, the analysis identified Exfiltration Over Alternative Protocol: Exfiltration Over Unencrypted/Obfuscated Non-C2 Protocol (T1048.003) with moderate to high confidence (75%), supported by evidence indicating exposure of both PII and PHI elevates risks of identity theft, fraud, and blackmail (implies data was removed from the environment). Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (10%), supported by evidence indicating investigation is ongoing (no explicit evidence of destruction, but included due to breach severity) and Identity Theft (T1659) with high confidence (95%), with evidence including high-value targets for identity theft, financial fraud, and blackmail, and social Security numbers, driver’s license numbers exposed. Under the Initial Access tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating critical vulnerabilities in healthcare data security (suggests potential abuse of legitimate credentials or weak access controls) and Exploit Public-Facing Application (T1190) with moderate confidence (65%), supported by evidence indicating vulnerabilities in healthcare data security (common vector for breaches in healthcare). Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (60%), supported by evidence indicating vulnerabilities in healthcare data security (implies potential misconfigurations leading to credential exposure). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Anthem Blue Cross and Blue Shield Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/anthembcbs/incident/ANT0192801112125
- Anthem Blue Cross and Blue Shield CyberSecurity Rating page: https://www.rankiteo.com/company/anthembcbs
- Anthem Blue Cross and Blue Shield Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/ant0192801112125-anthem-inc-breach-may-2025/
- Anthem Blue Cross and Blue Shield CyberSecurity Score History: https://www.rankiteo.com/company/anthembcbs/history
- Anthem Blue Cross and Blue Shield CyberSecurity Incident Source: https://www.claimdepot.com/data-breach/anthem-2025
- 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