Incident Score: Analysis & Impact (CHA1768593593)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Chapman University'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 Chapman University 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 Chapman University breach identified under incident ID CHA1768593593.
The analysis begins with a detailed overview of Chapman University's information like the linkedin page: https://www.linkedin.com/company/chapman-university, the number of followers: 100720, the industry type: Higher Education and the number of employees: 4416 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 782 and after the incident was 709 with a difference of -73 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 Chapman University and their customers.
On 16 January 2026, Chapman University disclosed Data Breach issues under the banner "Chapman University Data Breach Exposes Sensitive Personal Information".
Chapman University reported a data breach to the California Attorney General after detecting a network security incident on January 31, 2025.
The disruption is felt across the environment, and exposing Sensitive personal identifiable information (PII).
In response, and stakeholders are being briefed through Notified affected individuals via mail on January 8, 2026, offering complimentary credit monitoring services.
The case underscores how Completed, with advisories going out to stakeholders covering Notified affected individuals via mail on January 8, 2026.
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 Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating unauthorized third party accessed its systems and Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating network security incident detected on January 31, 2025. Under the Credential Access tactic, the analysis identified Modify Authentication Process (T1556) with moderate confidence (50%), supported by evidence indicating unauthorized third party accessed its systems and OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating social Security numbers, government-issued IDs compromised. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating names, SSNs, financial details, medical info compromised and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating sensitive PII held by the institution exposed. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating unauthorized third party accessed its systems and Automated Exfiltration (T1020) with moderate confidence (60%), supported by evidence indicating data breach impacting sensitive PII. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (40%), supported by evidence indicating network security incident detected and Stored Data Manipulation (T1565.001) with moderate confidence (50%), supported by evidence indicating sensitive PII exposed, identity theft risk high. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Chapman University Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/chapman-university/incident/CHA1768593593
- Chapman University CyberSecurity Rating page: https://www.rankiteo.com/company/chapman-university
- Chapman University Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/cha1768593593-chapman-university-breach-january-2025/
- Chapman University CyberSecurity Score History: https://www.rankiteo.com/company/chapman-university/history
- Chapman University CyberSecurity Incident Source: https://straussborrelli.com/2026/01/16/chapman-associates-data-breach-investigation/
- 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