Incident Score: Analysis & Impact (WOR1770840127)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Sermo's Ransomware 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 Sermo 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 Sermo breach identified under incident ID WOR1770840127.
The analysis begins with a detailed overview of Sermo's information like the linkedin page: https://www.linkedin.com/company/worldone, the number of followers: 15141, the industry type: Software Development and the number of employees: 637 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 669 and after the incident was 523 with a difference of -146 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 Sermo and their customers.
On 09 February 2026, Sermo disclosed Ransomware issues under the banner "Sermo Data Breach Following Ransomware Attack".
Sermo, a healthcare-focused platform, disclosed a data breach after a ransomware attack disrupted operations at its Denmark-based data center.
The disruption is felt across the environment, and exposing Names and Social Security numbers.
In response, and stakeholders are being briefed through Notified affected individuals via mail on February 9, 2026, providing specifics on compromised data and offering complimentary credit monitoring services.
The case underscores how with advisories going out to stakeholders covering Notified affected individuals via mail on February 9, 2026, with details on compromised data and credit monitoring services.
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 operations at its Denmark-based data center and Valid Accounts (T1078) with moderate confidence (60%), supported by evidence indicating unauthorized third party may have accessed sensitive data. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating ransomware attack disrupted operations. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating accessed and exfiltrated sensitive personal data. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating names and Social Security numbers compromised. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (80%), supported by evidence indicating data exfiltration confirmed between March 19 and April 10, 2024. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate to high confidence (70%), supported by evidence indicating ransomware attack disrupted operations at data center. Under the Defense Evasion tactic, the analysis identified Indicator Removal: Clear Windows Event Logs (T1070.001) with moderate confidence (50%), supported by evidence indicating power outage initially misidentified as cause of disruption. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Sermo Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/worldone/incident/WOR1770840127
- Sermo CyberSecurity Rating page: https://www.rankiteo.com/company/worldone
- Sermo Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/wor1770840127-sermo-ransomware-february-2026/
- Sermo CyberSecurity Score History: https://www.rankiteo.com/company/worldone/history
- Sermo CyberSecurity Incident Source: https://straussborrelli.com/2026/02/10/sermo-data-breach-investigation/
- 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