Incident Score: Analysis & Impact (MOB1766181598)
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 Mobius Solutions Ltd'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 Mobius Solutions Ltd 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 Mobius Solutions Ltd breach identified under incident ID MOB1766181598.
The analysis begins with a detailed overview of Mobius Solutions Ltd's information like the linkedin page: https://www.linkedin.com/company/mobius-solutions-ltd, the number of followers: 0, the industry type: Market Research and the number of employees: 2 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 786 and after the incident was 678 with a difference of -108 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 Mobius Solutions Ltd and their customers.
On 19 December 2025, DEEZER disclosed Data Breach issues under the banner "MOBIUS SOLUTIONS LTD fined €1 million for GDPR violations related to DEEZER data breach".
On 11 December 2025, the CNIL imposed a fine on MOBIUS SOLUTIONS LTD, the processor behind a data breach affecting users of DEEZER.
The disruption is felt across the environment, and exposing Yes, with nearly 46,000,000 records at risk, plus an estimated financial loss of €1,000,000 (fine).
Formal response steps have not been shared publicly yet.
The case underscores how Completed (CNIL investigation concluded in 2025), teams are taking away lessons such as Processors must strictly adhere to GDPR obligations, including data deletion at the end of contractual relationships, compliance with controller instructions, and maintenance of processing records. Unauthorized data retention and misuse can lead to significant fines and reputational damage, and recommending next steps like Ensure all data is deleted at the end of contractual relationships with data controllers, Obtain explicit instructions from data controllers before using their data for any purpose and Maintain an up-to-date record of processing activities as required by GDPR Article 30, with advisories going out to stakeholders covering CNIL decision made public to highlight GDPR compliance risks for processors.
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 moderate to high confidence (70%), supported by evidence indicating mOBIUS SOLUTIONS LTD retained DEEZER user data post-contract termination. Under the Credential Access tactic, the analysis identified Steal Web Session Cookie (T1539) with moderate confidence (50%), supported by evidence indicating unauthorized use of DEEZER data for advertising platform improvements and Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (60%), supported by evidence indicating data stored in non-production environment alongside other clients data. Under the Exfiltration tactic, the analysis identified Transfer Data to Cloud Account (T1537) with moderate to high confidence (80%), supported by evidence indicating 46 million users data posted on the dark web and Exfiltration Over Alternative Protocol: Exfiltration Over Unencrypted/Obfuscated Non-C2 Protocol (T1048.003) with moderate to high confidence (70%), supported by evidence indicating data breach traced to unauthorized data retention and misuse. Under the Defense Evasion tactic, the analysis identified Hide Artifacts: Hidden Files and Directories (T1564.001) with moderate confidence (60%), supported by evidence indicating data stored in non-production environment with other clients data and Indicator Removal: File Deletion (T1070.004) with moderate confidence (50%), supported by evidence indicating failure to maintain processing records (GDPR Article 30). Under the Collection tactic, the analysis identified Data from Cloud Storage Object (T1213.003) with moderate to high confidence (80%), supported by evidence indicating unauthorized copying of DEEZERs data for internal use. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Mobius Solutions Ltd Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/mobius-solutions-ltd/incident/MOB1766181598
- Mobius Solutions Ltd CyberSecurity Rating page: https://www.rankiteo.com/company/mobius-solutions-ltd
- Mobius Solutions Ltd Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/mob1766181598-breach-december-2025/
- Mobius Solutions Ltd CyberSecurity Score History: https://www.rankiteo.com/company/mobius-solutions-ltd/history
- Mobius Solutions Ltd CyberSecurity Incident Source: https://www.cnil.fr/en/data-breach-mobius-solutions-ltd-fined-eu1-million
- 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