Anthem, Inc. Breach Incident Score: Analysis & Impact (ANT3992739112125)

In this Rankiteo incident briefing, we review the Anthem, Inc. breach identified under incident ID ANT3992739112125.

The analysis begins with a detailed overview of Anthem, Inc.'s information like the linkedin page: https://www.linkedin.com/company/elevance-health, the number of followers: 329245, the industry type: Hospitals and Health Care and the number of employees: 20202 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 828 and after the incident was 828 with a difference of 0 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, Inc. and their customers.

On 19 November 2025, Anthem, Inc. (Elevance Health, Inc.) disclosed Data Breach issues under the banner "Anthem, Inc. (Elevance Health) Data Breach".

Anthem, Inc.

The disruption is felt across the environment, and exposing Names, Addresses and Dates of Birth, with nearly 1,162+ (Massachusetts; total unknown) records at risk.

In response, while recovery efforts such as Offered free identity theft protection services to affected individuals continue, and stakeholders are being briefed through Disclosure to Massachusetts Attorney General; notifications to affected individuals.

The case underscores how Ongoing (scope of breach in other states undetermined), and recommending next steps like Sign up for free identity theft protection services if offered by Anthem, Monitor financial accounts for suspicious activity or unauthorized transactions and Place a fraud alert on credit reports via major credit bureaus, with advisories going out to stakeholders covering Data breach notifications sent to affected individuals, Encouragement to enroll in identity theft protection services and Guidance on monitoring accounts and placing fraud alerts.

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.

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 Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating data breach exposing PII/PHI implies unauthorized access via compromised credentials or insider misuse and Exploit Public-Facing Application (T1190) with moderate confidence (60%), supported by evidence indicating vulnerability exploited such as null but breach suggests possible web app exploitation (common in healthcare). Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (95%), supported by evidence indicating data compromised such as SSNs, medical records, driver’s licenses indicates targeted collection of sensitive files and Data from Network Shared Drive (T1039) with moderate to high confidence (80%), supported by evidence indicating protected Health Information (PHI) often stored on shared drives in healthcare orgs. 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 (85%), supported by evidence indicating data exfiltration such as Likely with no ransomware noted; implies covert exfil via HTTP/DNS/email. Under the Impact tactic, the analysis identified Phishing for Information: Spearphishing via Service (T1598.003) with high confidence (90%), supported by evidence indicating risks of targeted scams, unauthorized access to healthcare services suggests follow-on phishing with stolen PII and Malicious Identity Theft (T1659) with high confidence (95%), supported by evidence indicating identity theft risk such as High due to exposure of SSNs, medical records, and driver’s licenses. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with moderate to high confidence (75%), supported by evidence indicating healthcare sector often stores credentials in unsecured files; breach scope suggests lateral movement. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.