Incident Score: Analysis & Impact (CRUTEL1774405474)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of TELUS Digital'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 TELUS Digital 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 TELUS Digital breach identified under incident ID CRUTEL1774405474.
The analysis begins with a detailed overview of TELUS Digital's information like the linkedin page: https://www.linkedin.com/company/telus-digital, the number of followers: 999992, the industry type: IT Services and IT Consulting and the number of employees: 39811 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 701 and after the incident was 600 with a difference of -101 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 TELUS Digital and their customers.
Crunchyroll recently reported "Crunchyroll Investigates Alleged Data Breach Impacting 6.8 Million Users", a noteworthy cybersecurity incident.
Reports emerged that threat actors had stolen data belonging to approximately 6.8 million Crunchyroll users.
The disruption is felt across the environment, affecting Google Workspace Mail, Jiro Service Management and Slack, and exposing 6.8 million unique email addresses, usernames, login names, geographic locations, IP addresses, ticket contents, partial credit card details (expiration dates and last four digits), and a small number of full card numbers, with nearly 8 million support tickets (6.8 million unique email addresses) records at risk.
In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Access revoked after 24 hours, and stakeholders are being briefed through Public statement confirming investigation.
The case underscores how Active, with advisories going out to stakeholders covering Public statement confirming 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.
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: Cloud Accounts (T1078.004) with high confidence (90%), supported by evidence indicating compromised the Okta single sign-on (SSO) account of a Crunchyroll support agent and Supply Chain Compromise: Compromise Software Supply Chain (T1195.002) with moderate to high confidence (80%), supported by evidence indicating telus International, a business process outsourcing firm with access to Crunchyroll’s support tickets. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (80%), supported by evidence indicating attackers claimed to have deployed malware on the agent’s device. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with moderate to high confidence (80%), supported by evidence indicating stealing credentials that granted access to multiple platforms and OS Credential Dumping (T1003) with moderate to high confidence (70%), supported by evidence indicating malware on the agent’s device, stealing credentials. Under the Lateral Movement tactic, the analysis identified Valid Accounts: Cloud Accounts (T1078.004) with high confidence (90%), supported by evidence indicating access to multiple platforms, including Google Workspace Mail, Jiro Service Management, Slack. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating downloaded 8 million support tickets containing personal and partial financial data and Data from Information Repositories: Email Accounts (T1213.002) with moderate to high confidence (80%), supported by evidence indicating access to Google Workspace Mail. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating downloaded 8 million support tickets via Zendesk. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with lower confidence (30%), supported by evidence indicating no evidence of data encryption, but extortion demand suggests possible impact and Defacement: Internal Defacement (T1491.001) with lower confidence (40%), supported by evidence indicating extortion demand of $5 million sent to Crunchyroll. Under the Defense Evasion tactic, the analysis identified Hide Artifacts: Hidden Files and Directories (T1564.001) with moderate confidence (60%), supported by evidence indicating malware deployed on the agent’s device and Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (80%), supported by evidence indicating used compromised Okta SSO account to evade detection. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- TELUS Digital Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/telus-digital/incident/CRUTEL1774405474
- TELUS Digital CyberSecurity Rating page: https://www.rankiteo.com/company/telus-digital
- TELUS Digital Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/crutel1774405474-crunchyroll-telus-international-breach-july-2025/
- TELUS Digital CyberSecurity Score History: https://www.rankiteo.com/company/telus-digital/history
- TELUS Digital CyberSecurity Incident Source: https://www.cyberdaily.au/security/13381-6-8-million-crunchyroll-subscribers-allegedly-impacted-in-cyber-attack
- 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