Incident Score: Analysis & Impact (EAS1788013618)
The details regarding individual company incidents & reports gives you full view from every side.
Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Eastlink'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 Eastlink 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 Eastlink breach identified under incident ID EAS1788013618.
The analysis begins with a detailed overview of Eastlink's information like the linkedin page: https://www.linkedin.com/company/eastlink, the number of followers: 15572, the industry type: Telecommunications and the number of employees: 1388 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 759 and after the incident was 694 with a difference of -65 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 Eastlink and their customers.
Eastlink recently reported "Eastlink Potential Data Breach Affecting Personal Information", a noteworthy cybersecurity incident.
Eastlink, a telecommunications provider, has notified customers of a potential data breach that may have exposed sensitive personal information, including names, contact details, account numbers, and PINs.
The disruption is felt across the environment, affecting Website and mobile app platforms, and exposing Customer names, contact details, account numbers, and PINs.
In response, moved swiftly to contain the threat with measures like Shut down affected platforms on website and mobile app, and stakeholders are being briefed through Customer notifications and public disclosure.
The case underscores how Ongoing, with advisories going out to stakeholders covering Notification sent to current and former 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 moderate to high confidence (80%), supported by evidence indicating unauthorized access to accounts occurred between late Wednesday and early Thursday and Exploit Public-Facing Application (T1190) with moderate confidence (60%), supported by evidence indicating affected platforms on its website and mobile app were shut down. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate to high confidence (70%), supported by evidence indicating account numbers, and PINs may have been exposed. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating customer names, contact details, account numbers, and PINs compromised. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating potential data breach that may have exposed sensitive personal information. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating shut down affected platforms on its website and mobile app. Under the Defense Evasion tactic, the analysis identified Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (60%), supported by evidence indicating shut down affected platforms on website and mobile app. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Eastlink Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/eastlink/incident/EAS1788013618
- Eastlink CyberSecurity Rating page: https://www.rankiteo.com/company/eastlink
- Eastlink Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/eas1788013618-eastlink-breach-august-2026/
- Eastlink CyberSecurity Score History: https://www.rankiteo.com/company/eastlink/history
- Eastlink CyberSecurity Incident Source: https://www.cbc.ca/news/canada/nova-scotia/eastlink-data-breach-august-2026-9.7325413
- 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