Incident Score: Analysis & Impact (BAS1776069084)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Basic-Fit'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 Basic-Fit 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 Basic-Fit breach identified under incident ID BAS1776069084.
The analysis begins with a detailed overview of Basic-Fit's information like the linkedin page: https://www.linkedin.com/company/basic-fit, the number of followers: 41343, the industry type: Wellness and Fitness Services and the number of employees: 4031 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 684 and after the incident was 487 with a difference of -197 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 Basic-Fit and their customers.
Basic-Fit recently reported "Basic-Fit Data Breach Exposes Member Details in the Netherlands and Beyond", a noteworthy cybersecurity incident.
Basic-Fit, a major European gym chain, has suffered a data breach exposing sensitive information of its members across the Netherlands and other regions.
The disruption is felt across the environment, and exposing Personal details.
Formal response steps have not been shared publicly yet.
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 major European gym chain...suffered a data breach and External Remote Services (T1133) with lower confidence (40%), supported by evidence indicating basic-Fit operates over 1,000 locations across Europe. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate confidence (60%), supported by evidence indicating personal details...compromised via potential vulnerabilities. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (70%), supported by evidence indicating sensitive information of its members...compromised and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating large-scale member databases remain prime targets. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate confidence (60%), supported by evidence indicating data breach exposing sensitive information and Transfer Data to Cloud Account (T1537) with lower confidence (40%), supported by evidence indicating exact scope of the exposed data remains under investigation. Under the Impact tactic, the analysis identified Data Manipulation: Stored Data Manipulation (T1565.001) with lower confidence (30%), supported by evidence indicating potential risks including identity theft. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Basic-Fit Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/basic-fit/incident/BAS1776069084
- Basic-Fit CyberSecurity Rating page: https://www.rankiteo.com/company/basic-fit
- Basic-Fit Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/bas1776069084-basic-fit-breach-april-2026/
- Basic-Fit CyberSecurity Score History: https://www.rankiteo.com/company/basic-fit/history
- Basic-Fit CyberSecurity Incident Source: https://www.tradingview.com/news/reuters.com,2026:newsml_L6N40W0CW:0-basic-fit-data-breach-exposes-details-of-gym-members-in-netherlands-elsewhere/
- 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