Incident Score: Analysis & Impact (ATOSFR1787560233)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of SFR'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 SFR 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 SFR breach identified under incident ID ATOSFR1787560233.
The analysis begins with a detailed overview of SFR's information like the linkedin page: https://www.linkedin.com/company/sfr, the number of followers: 151421, the industry type: Telecommunications and the number of employees: 11376 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 776 and after the incident was 693 with a difference of -83 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 SFR and their customers.
On 02 July 2024, SFR disclosed Data Breach issues under the banner "SFR Data Breach Affecting 2.1 Million Fibre Customers in France".
French telecom operator SFR has disclosed a data breach exposing personal information of an estimated 2.1 million fibre customers.
The disruption is felt across the environment, affecting Internal tool for managing and analyzing fibre connections, and exposing Titles, full names, addresses, mobile numbers, contract IDs, technical fibre line details, with nearly 2.1 million records at risk.
In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Disabled compromised account, blocked associated IP addresses, and stakeholders are being briefed through Notified impacted customers, warned about potential scams.
The case underscores how Ongoing, with advisories going out to stakeholders covering Warned customers about potential phishing and social engineering attacks.
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 high confidence (90%), with evidence including traced the unauthorized access to an internal tool, and disabled compromised account and Trusted Relationship (T1199) with moderate to high confidence (70%), supported by evidence indicating internal tool used for managing and analyzing fibre connections. Under the Credential Access tactic, the analysis identified Valid Accounts (T1078) with high confidence (90%), with evidence including traced the unauthorized access to an internal tool, and disabled compromised account. Under the Discovery tactic, the analysis identified Account Discovery (T1087) with moderate to high confidence (80%), supported by evidence indicating internal tool used for managing and analyzing fibre connections and File and Directory Discovery (T1083) with moderate to high confidence (70%), supported by evidence indicating personal information of 2.1 million fibre customers exposed. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating titles, full names, addresses, mobile numbers, contract IDs compromised and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating internal tool used for managing and analyzing fibre connections. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating 2.1 million customer records stolen and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating no details on exfiltration method, but large-scale data theft occurred. Under the Impact tactic, the analysis identified Data Manipulation: Stored Data Manipulation (T1565.001) with lower confidence (40%), supported by evidence indicating potential for phishing, impersonation, or social engineering attacks. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- SFR Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/sfr/incident/ATOSFR1787560233
- SFR CyberSecurity Rating page: https://www.rankiteo.com/company/sfr
- SFR Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/atosfr1787560233-sfr-france-titres-breach-august-2026/
- SFR CyberSecurity Score History: https://www.rankiteo.com/company/sfr/history
- SFR CyberSecurity Incident Source: https://www.connexionfrance.com/news/more-than-21-million-customer-records-stolen-in-sfr-hack-are-you-at-risk/809132
- 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