Incident Score: Analysis & Impact (CIT1776883843)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Citizens'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 Citizens 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 Citizens breach identified under incident ID CIT1776883843.
The analysis begins with a detailed overview of Citizens's information like the linkedin page: https://www.linkedin.com/company/citizens-bank, the number of followers: 185825, the industry type: Banking and the number of employees: 22844 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 748 and after the incident was 601 with a difference of -147 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 Citizens and their customers.
On 21 April 2024, Citizens Financial Group disclosed Data Breach, Ransomware issues under the banner "Citizens Financial Group Third-Party Data Breach Amid Ransomware Claims".
Citizens Financial Group confirmed a data security incident involving a third-party vendor, with most exposed data being masked test records.
The disruption is felt across the environment, affecting Third-party vendor systems, and exposing Masked test records, limited customer information (names, addresses, account-related information), with nearly Millions (claimed by ransomware group, unverified) records at risk.
In response, and stakeholders are being briefed through Notifying impacted individuals, public statement.
The case underscores how Ongoing, with advisories going out to stakeholders covering Notifying impacted individuals.
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 data security incident involving a third-party vendor and Compromise Software Supply Chain (T1195.002) with moderate to high confidence (80%), supported by evidence indicating third-party vendor compromise. Under the Credential Access tactic, the analysis identified Steal Application Access Token (T1528) with moderate confidence (60%), supported by evidence indicating limited customer information (names, addresses, account-related information). Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating personal details such as names, addresses, and account-related information and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating masked test records, limited customer information compromised. 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 alleged possession of millions of records and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating ransomware group shared sample data (common extortion tactic). Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with lower confidence (40%), supported by evidence indicating incident coincides with ransomware claims (Everest ransomware group) and Defacement (T1491) with lower confidence (30%), supported by evidence indicating ransomware group listed Citizens as a victim (public extortion). Under the Command and Control tactic, the analysis identified Application Layer Protocol (T1071) with moderate confidence (60%), supported by evidence indicating ransomware group set a deadline for negotiations (extortion tactic). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Citizens Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/citizens-bank/incident/CIT1776883843
- Citizens CyberSecurity Rating page: https://www.rankiteo.com/company/citizens-bank
- Citizens Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/cit1776883843-citizens-financial-group-ransomware-april-2026/
- Citizens CyberSecurity Score History: https://www.rankiteo.com/company/citizens-bank/history
- Citizens CyberSecurity Incident Source: https://www.investmentnews.com/practice-management/data-breach-citizens-flags-limited-customer-impact-after-vendor-data-incident-amid-ransomware-claims/266250
- 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