Incident Score: Analysis & Impact (WES1767778416)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of WestJet's Cyber Attack 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 WestJet 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 WestJet breach identified under incident ID WES1767778416.
The analysis begins with a detailed overview of WestJet's information like the linkedin page: https://www.linkedin.com/company/westjet, the number of followers: 250874, the industry type: Airlines and Aviation and the number of employees: 8745 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 443 and after the incident was 424 with a difference of -19 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 WestJet and their customers.
WestJet recently reported "WestJet Cybersecurity Incident", a noteworthy cybersecurity incident.
WestJet, Canada’s second-largest airline, is investigating a cyberattack that has disrupted access to some internal systems and the WestJet app, restricting access for several users.
The disruption is felt across the environment, affecting internal systems and WestJet app.
In response, teams activated the incident response plan.
The case underscores how Ongoing.
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 Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating disrupted access to some internal systems and its mobile app and Trusted Relationship (T1199) with lower confidence (40%), supported by evidence indicating broader trend of cyber threats targeting critical infrastructure. Under the Impact tactic, the analysis identified Service Stop (T1489) with moderate to high confidence (80%), supported by evidence indicating disrupted access to some internal systems and the WestJet app and Defacement (T1491) with lower confidence (30%), supported by evidence indicating restricted access for several users (operational impact). Under the Persistence tactic, the analysis identified Valid Accounts (T1078) with lower confidence (40%), supported by evidence indicating internal systems and app access disrupted (implied account misuse). Under the Defense Evasion tactic, the analysis identified Disabling Security Tools (T1089) with moderate confidence (50%), supported by evidence indicating specialized teams activated to investigate and mitigate. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with lower confidence (40%), supported by evidence indicating attack threatening the organizations existence (implied data theft). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- WestJet Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/westjet/incident/WES1767778416
- WestJet CyberSecurity Rating page: https://www.rankiteo.com/company/westjet
- WestJet Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/wes1767778416-cyber-attack-december-2025/
- WestJet CyberSecurity Score History: https://www.rankiteo.com/company/westjet/history
- WestJet CyberSecurity Incident Source: https://databreaches.net/2025/06/14/westjet-investigates-cyberattack-disrupting-internal-systems/
- 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