Incident Score: Analysis & Impact (TEL1772628030)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Telia'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 Telia 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 Telia breach identified under incident ID TEL1772628030.
The analysis begins with a detailed overview of Telia's information like the linkedin page: https://www.linkedin.com/company/teliacompany, the number of followers: 196024, the industry type: Telecommunications and the number of employees: 17620 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 794 and after the incident was 743 with a difference of -51 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 Telia and their customers.
Telia Norway recently reported "Telia Norway Data Breach with Customer Data Exposed on Dark Web", a noteworthy cybersecurity incident.
Telia Norway has acknowledged that a data breach disclosed by Norwegian regulator Nkom is more severe than initially assessed.
The disruption is felt across the environment, and exposing Names, contact details, IP addresses.
In response, and stakeholders are being briefed through Public apology, deployment of significant resources.
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 (60%), supported by evidence indicating telecommunications sector, where sensitive user data can become a prime target and Trusted Relationship (T1199) with moderate confidence (50%), supported by evidence indicating attack vector, or number of affected individuals remain undisclosed. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate confidence (50%), supported by evidence indicating sensitive user data can become a prime target for malicious actors. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating names, contact details, and IP addresses has been posted on the dark web and Data from Information Repositories (T1213) with moderate to high confidence (70%), supported by evidence indicating customer data including names, contact details, and IP addresses. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating data breach...Customer data...has been posted on the dark web and Exfiltration Over Web Service (T1567) with moderate to high confidence (70%), supported by evidence indicating data exfiltration such as Yes,data sold on dark web such as Yes. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (40%), supported by evidence indicating breach is more severe than initially assessed and Data Manipulation: Transmitted Data Manipulation (T1565.002) with moderate confidence (50%), supported by evidence indicating exposure of IP addresses raises concerns about potential follow-on attacks. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Telia Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/teliacompany/incident/TEL1772628030
- Telia CyberSecurity Rating page: https://www.rankiteo.com/company/teliacompany
- Telia Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/tel1772628030-telia-norway-breach-february-2026/
- Telia CyberSecurity Score History: https://www.rankiteo.com/company/teliacompany/history
- Telia CyberSecurity Incident Source: https://www.telecompaper.com/news/telia-norway-says-data-breach-bigger-issue-than-first-thought--1564216
- 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