Incident Score: Analysis & Impact (KGR1767786033)

In this Rankiteo incident briefing, we review the Keio University Global Research Institute (KGRI) breach identified under incident ID KGR1767786033.

The analysis begins with a detailed overview of Keio University Global Research Institute (KGRI)'s information like the linkedin page: https://www.linkedin.com/company/kgri, the number of followers: 196, the industry type: Higher Education and the number of employees: 15 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 770 and after the incident was 666 with a difference of -104 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 Keio University Global Research Institute (KGRI) and their customers.

On 23 December 2025, Keio University Shonan Fujisawa Campus (SFC) disclosed Data Breach issues under the banner "Unauthorized Access and Data Compromise at Keio University SFC-CNS Email Service".

Unauthorized access from outside the university led to the compromise of user email addresses and passwords associated with the Shonan Fujisawa Campus (SFC) SFC-CNS email service.

The disruption is felt across the environment, affecting SFC-CNS email service, spam quarantine server, directory server, and exposing Email addresses, password hashes, plaintext email passwords, Wi-Fi passwords, full names, ID numbers, forwarding email addresses, and spam quarantine emails, with nearly 6,447 accounts (directory server) + 222,508 emails (quarantine server) records at risk.

In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Blocked entry point, mandatory password resets, and began remediation that includes Investigation into the zero-day vulnerability, enhanced monitoring, and stakeholders are being briefed through Public disclosure, advisories to affected users.

The case underscores how Ongoing, and recommending next steps like Change compromised passwords for other services, exercise caution with suspicious emails, and monitor for secondary harm, with advisories going out to stakeholders covering Advisories issued to affected users regarding password resets and phishing risks.

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.