Incident Score: Analysis & Impact (COM1789483063)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Communauto'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 Communauto 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 Communauto breach identified under incident ID COM1789483063.
The analysis begins with a detailed overview of Communauto's information like the linkedin page: https://www.linkedin.com/company/communauto, the number of followers: 7082, the industry type: Consumer Services and the number of employees: 148 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 689 with a difference of -81 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 Communauto and their customers.
On 04 September 2023, Communauto disclosed Data Breach issues under the banner "Communauto Data Breach Due to Employee Misuse of Automated Script".
Montreal-based car-sharing company Communauto disclosed a potential data breach after an employee allegedly attempted to access and download customer records without authorization using an automated script.
The disruption is felt across the environment, and exposing Names, addresses, driver’s licence numbers, customer photographs, licence images, with nearly Several thousand records at risk.
In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Search warrant executed at employee’s residence, computer equipment seized, and stakeholders are being briefed through Email to affected customers.
The case underscores how Ongoing, with advisories going out to stakeholders covering Email notification to affected customers.
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 high confidence (90%), supported by evidence indicating employee allegedly attempted to access and download customer records. Under the Execution tactic, the analysis identified Command and Scripting Interpreter (T1059) with moderate to high confidence (80%), supported by evidence indicating unauthorized automated script was deployed by an employee. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate to high confidence (70%), supported by evidence indicating employee misuses automated script to access customer records. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating exposed data included names, addresses, driver’s licence numbers, photographs. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate confidence (60%), supported by evidence indicating employee attempted to access and download customer records and Exfiltration Over Web Service (T1567) with moderate confidence (50%), supported by evidence indicating no evidence of external data disclosure (ongoing investigation). Under the Defense Evasion tactic, the analysis identified Hide Artifacts (T1564) with moderate to high confidence (70%), supported by evidence indicating automated script deployed without authorization. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no evidence of external disclosure (ongoing investigation). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Communauto Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/communauto/incident/COM1789483063
- Communauto CyberSecurity Rating page: https://www.rankiteo.com/company/communauto
- Communauto Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/com1789483063-communauto-breach-september-2026/
- Communauto CyberSecurity Score History: https://www.rankiteo.com/company/communauto/history
- Communauto CyberSecurity Incident Source: https://www.cbc.ca/news/canada/montreal/communauto-data-breach-9.7344242
- 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