Incident Score: Analysis & Impact (COM1785580087)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Comcast'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 Comcast 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 Comcast breach identified under incident ID COM1785580087.
The analysis begins with a detailed overview of Comcast's information like the linkedin page: https://www.linkedin.com/company/comcast, the number of followers: 798248, the industry type: Telecommunications and the number of employees: 61635 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 542 and after the incident was 460 with a difference of -82 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 Comcast and their customers.
On 18 December 2023, Comcast Xfinity disclosed Data Breach issues under the banner "Comcast Xfinity Data Breach Settlement".
Comcast has agreed to a $117.5 million class action settlement to resolve claims stemming from a cybersecurity incident in October 2023 that exposed the personal data of millions of Xfinity customers.
The disruption is felt across the environment, and exposing Personal data of millions of Xfinity customers, with nearly Millions records at risk, plus an estimated financial loss of $117.5 million (settlement amount).
In response, and stakeholders are being briefed through Breach notification sent to affected customers on December 18, 2023.
The case underscores how Settled (pending final court approval), teams are taking away lessons such as Highlights the ongoing risks of large-scale data exposures and the financial repercussions for affected companies, with advisories going out to stakeholders covering Eligible customers can file claims for compensation by September 14, 2026. Identity theft protection and restoration services may be provided.
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 cybersecurity incident in October 2023 that exposed the personal data and Valid Accounts (T1078) with moderate confidence (50%), supported by evidence indicating personal data of millions of Xfinity customers. Under the Credential Access tactic, the analysis identified Unsecured Credentials (T1552) with moderate to high confidence (70%), supported by evidence indicating personal data of millions of Xfinity customers exposed and OS Credential Dumping (T1003) with moderate confidence (50%), supported by evidence indicating high sensitivity of compromised personal data. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating personal data of millions of Xfinity customers was exposed. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating data breach impacting millions of Xfinity customers and Transfer Data to Cloud Account (T1537) with moderate confidence (50%), supported by evidence indicating large-scale data exposure with high identity theft risk. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (40%), supported by evidence indicating cybersecurity incident in October 2023 and Data Manipulation: Transmitted Data Manipulation (T1565.002) with lower confidence (30%), supported by evidence indicating no details on malware’s origin or extent of breach. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Comcast Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/comcast/incident/COM1785580087
- Comcast CyberSecurity Rating page: https://www.rankiteo.com/company/comcast
- Comcast Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/com1785580087-xfinity-comcast-breach-october-2023/
- Comcast CyberSecurity Score History: https://www.rankiteo.com/company/comcast/history
- Comcast CyberSecurity Incident Source: https://uk.finance.yahoo.com/news/xfinity-data-breach-claim-10-224622525.html
- 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