Incident Score: Analysis & Impact (LIB1779359744)
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 Liberty Mutual Insurance's Ransomware 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 Liberty Mutual Insurance 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 Liberty Mutual Insurance breach identified under incident ID LIB1779359744.
The analysis begins with a detailed overview of Liberty Mutual Insurance's information like the linkedin page: https://www.linkedin.com/company/liberty-mutual-insurance, the number of followers: 523511, the industry type: Insurance and the number of employees: 37904 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 779 and after the incident was 689 with a difference of -90 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 Liberty Mutual Insurance and their customers.
On 06 May 2024, Liberty Mutual Insurance Co. disclosed Ransomware issues under the banner "Liberty Mutual Faces Lawsuit Over Ransomware Attack Exposing Sensitive Customer Data".
A proposed class-action lawsuit accuses Liberty Mutual Insurance Co.
The disruption is felt across the environment, and exposing Personally identifiable information (PII), protected health data, Social Security numbers, financial records, medical information.
In response, and stakeholders are being briefed through No direct notification to affected customers.
The case underscores how with advisories going out to stakeholders covering No direct notification to affected customers.
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 Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating ransomware attack linked to the cybercriminal group Everest and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating failure to implement adequate cybersecurity measures. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating ransomware attack linked to the cybercriminal group Everest. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with moderate confidence (60%), supported by evidence indicating failure to implement adequate cybersecurity measures. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating exposed PII, SSNs, financial records, medical information and Data Staged: Local Data Staging (T1074.001) with moderate to high confidence (70%), supported by evidence indicating data exfiltration threatened to publish on dark web. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating everest ransomware group threatened to publish stolen records and Exfiltration Over Web Service: Exfiltration to Cloud Storage (T1567.002) with moderate confidence (60%), supported by evidence indicating data may already be circulating on the dark web. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate to high confidence (70%), supported by evidence indicating ransomware attack linked to Everest ransomware group and Defacement: Internal Defacement (T1491.001) with moderate confidence (50%), supported by evidence indicating posted Liberty Mutual’s name and logo on dark web leak site. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate confidence (60%), supported by evidence indicating ransomware attack; no details on encryption or evasion and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (50%), supported by evidence indicating failure to implement adequate cybersecurity measures. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Liberty Mutual Insurance Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/liberty-mutual-insurance/incident/LIB1779359744
- Liberty Mutual Insurance CyberSecurity Rating page: https://www.rankiteo.com/company/liberty-mutual-insurance
- Liberty Mutual Insurance Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/lib1779359744-liberty-mutual-insurance-co-ransomware-april-2026/
- Liberty Mutual Insurance CyberSecurity Score History: https://www.rankiteo.com/company/liberty-mutual-insurance/history
- Liberty Mutual Insurance CyberSecurity Incident Source: https://insurancenewsnet.com/innarticle/liberty-mutual-hit-with-lawsuit-over-everest-ransomware-data-leak
- 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