Desjardins Breach Incident Score: Analysis & Impact (DES1767941129)
The Rankiteo video explains how the company Desjardins has been impacted by a Breach on the date December 25, 2025.
Incident Summary
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Key Highlights From This Incident Analysis
- Timeline of Desjardins'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 Rankiteoโs incident engine converts technical details into a normalized incident score.
- How this cyber incident impacts Desjardins Rankiteo cyber scoring and cyber rating.
- Rankiteoโs MITRE ATT&CK correlation analysis for this incident, with associated confidence level.
Full Incident Analysis Transcript
In this Rankiteo incident briefing, we review the Desjardins breach identified under incident ID DES1767941129.
The analysis begins with a detailed overview of Desjardins's information like the linkedin page: https://www.linkedin.com/company/desjardins, the number of followers: 365039, the industry type: Banking and the number of employees: 43222 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 743 and after the incident was 677 with a difference of -66 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 Desjardins and their customers.
Lee Enterprises recently reported "Lee Enterprises Ransomware Attack and Data Breach", a noteworthy cybersecurity incident.
Lee Enterprises, a Davenport, Iowa-based media company, experienced a ransomware attack by the group Qilin, compromising the personal data of nearly 40,000 employees and subscribers.
The disruption is felt across the environment, and exposing Personal data of nearly 40,000 employees and subscribers, with nearly Nearly 40,000 records at risk.
Formal response steps have not been shared publicly yet.
The case underscores how Ongoing (Montana Attorney Generalโs investigation).
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.
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 on Lee Enterprises, a media company and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating personal data of nearly 40,000 employees and subscribers compromised. Under the Execution tactic, the analysis identified Exploitation for Client Execution (T1203) with moderate confidence (50%), supported by evidence indicating ransomware attack attributed to the Qilin ransomware group. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating personal data of nearly 40,000 employees and subscribers compromised. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating personal data...compromised via ransomware attack. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating data breach impacting nearly 40,000 employees and subscribers. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with high confidence (90%), supported by evidence indicating ransomware attack attributed to the Qilin ransomware group. Under the Defense Evasion tactic, the analysis identified Obfuscated Files or Information (T1027) with moderate confidence (60%), supported by evidence indicating ransomware attack by Qilin group, known for evasion tactics. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources
- Desjardins Rankiteo Cyber Incident Details: http://www.rankiteo.com/company/desjardins/incident/DES1767941129
- Desjardins CyberSecurity Rating page: https://www.rankiteo.com/company/desjardins
- Desjardins Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/des1767941129-desjardins-breach-december-2025/
- Desjardins CyberSecurity Score History: https://www.rankiteo.com/company/desjardins/history
- Desjardins CyberSecurity Incident Source: https://databreaches.net/2025/06/21/montana-attorney-general-launches-investigation-into-lee-enterprises-data-breach/
- Rankiteo A.I CyberSecurity Rating methodology: https://www.rankiteo.com/static/rankiteo_algo.pdf
- Rankiteo TPRM Scoring methodology: https://static.rankiteo.com/model/rankiteo_tprm_methodology.pdf






