Incident Score: Analysis & Impact (HAR3314333112525)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Harvard Alumni Association'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 Harvard Alumni Association 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 Harvard Alumni Association breach identified under incident ID HAR3314333112525.
The analysis begins with a detailed overview of Harvard Alumni Association's information like the linkedin page: https://www.linkedin.com/company/harvard-alumni-assoc, the number of followers: 23190, the industry type: Higher Education and the number of employees: 97 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 698 and after the incident was 636 with a difference of -62 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 Harvard Alumni Association and their customers.
On 24 November 2025, Harvard University disclosed Data Breach, Vishing Attack and Ransomware (Cl0p) issues under the banner "Harvard reports vishing breach exposing alumni and donor contact data".
Harvard University revealed that its Alumni Affairs and Development systems suffered a vishing breach, exposing emails, phone numbers, addresses, donation data, and biographical information of alumni, donors, faculty, staff, and students.
The disruption is felt across the environment, affecting Alumni Affairs and Development systems and Small administrative unit (Oracle EBS campaign), and exposing Emails, Phone numbers and Home/business addresses.
In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Removed attacker’s access and Prevented further unauthorized access, and stakeholders are being briefed through Data breach notifications sent to affected individuals (2025-11-22), Advisories to stay vigilant for suspicious communications and Guidance to verify unusual requests via trusted sources.
The case underscores how Ongoing (with external cybersecurity experts), and recommending next steps like Stay vigilant for suspicious communications (calls, texts, emails), Pause before engaging with unexpected requests for personal data and Verify unusual requests via trusted, independent sources, with advisories going out to stakeholders covering Notifications sent to affected individuals (2025-11-22).
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 Phishing: Voice Phishing (T1598.002) with high confidence (95%), with evidence including vishing breach targeting Alumni Affairs and Development systems, and phone-based phishing (vishing) attack and Exploit Public-Facing Application (T1190) with high confidence (90%), supported by evidence indicating exploitation of patched Oracle E-Business Suite vulnerability (Cl0p ransomware). Under the Credential Access tactic, the analysis identified Steal Web Session Cookie (T1539) with moderate to high confidence (70%), supported by evidence indicating removed attacker’s access implies session/credential compromise via vishing and Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (80%), supported by evidence indicating revoked unauthorized access to Alumni Affairs systems (likely via stolen credentials). Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (95%), supported by evidence indicating exposing emails, phone numbers, addresses, donation data, and biographical information. 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%), with evidence including data exfiltration such as true (vishing breach), and cl0p claimed to have leaked 1.3 TB of data. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate to high confidence (70%), supported by evidence indicating cl0p ransomware group (though no encryption confirmed in vishing incident) and Data from Cloud Storage (T1530) with moderate to high confidence (80%), supported by evidence indicating 1.3 TB (claimed by Cl0p on their leak site) (exfiltrated data). Under the Defense Evasion tactic, the analysis identified Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (80%), supported by evidence indicating revoked unauthorized access suggests use of legitimate credentials to evade detection. Under the Reconnaissance tactic, the analysis identified Phishing for Information (T1598) with high confidence (90%), supported by evidence indicating vishing breach likely involved pre-attack reconnaissance to target alumni/donor systems. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Harvard Alumni Association Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/harvard-alumni-assoc/incident/HAR3314333112525
- Harvard Alumni Association CyberSecurity Rating page: https://www.rankiteo.com/company/harvard-alumni-assoc
- Harvard Alumni Association Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/har3314333112525-harvard-university-breach-october-2025/
- Harvard Alumni Association CyberSecurity Score History: https://www.rankiteo.com/company/harvard-alumni-assoc/history
- Harvard Alumni Association CyberSecurity Incident Source: https://securityaffairs.com/185034/security/harvard-reports-vishing-breach-exposing-alumni-and-donor-contact-data.html
- 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