Comcast Breach Incident Score: Analysis & Impact (COM4832048112725)

In this Rankiteo incident briefing, we review the Comcast breach identified under incident ID COM4832048112725.

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: 706769, the industry type: Telecommunications and the number of employees: 60212 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 548 and after the incident was 485 with a difference of -63 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.

Comcast recently reported "Comcast Third-Party Vendor Data Breach (2024)", a noteworthy cybersecurity incident.

Comcast experienced a significant data breach in February 2024 due to inadequate cybersecurity measures by a third-party vendor handling customer data.

The disruption is felt across the environment, and exposing Names, Addresses and Account-related details, with nearly 275,000 records at risk, plus an estimated financial loss of $1.5 million (FCC fine).

Formal response steps have not been shared publicly yet.

The case underscores how Resolved (FCC settlement reached), teams are taking away lessons such as Protecting customer data requires constant vigilance and assessment of vendor security measures, Organizations must enforce stricter controls and audits of third-party vendors and Transparency and swift action in response to breaches are crucial for maintaining customer trust, and recommending next steps like Continuous monitoring of vendor security practices, Mandate periodic security audits for vendors with detailed reporting requirements and Define cybersecurity obligations and breach repercussions in vendor contracts.

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.

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 Trusted Relationship (T1199) with high confidence (95%), with evidence including breach stemmed from **inadequate security measures by the vendor**, and third-party vendor’s cybersecurity failures. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), with evidence including exposed **personal information of 275,000 customers** (names, addresses, account details), and data exfiltration such as **Yes**. Under the Exfiltration tactic, the analysis identified Exfiltration Over Alternative Protocol (T1048) with moderate to high confidence (85%), with evidence including data exfiltration such as **Yes**, and personal information of nearly 275,000 customers **exposed**. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with lower confidence (5%), supported by evidence indicating sensitivity of data such as **High** (no explicit encryption mentioned, but implied risk) and Resource Hijacking (T1496) with lower confidence (10%), supported by evidence indicating **reputational damage**, customers questioned Comcast’s data protection. Under the Defense Evasion tactic, the analysis identified Valid Accounts: Cloud Accounts (T1078.004) with moderate to high confidence (70%), supported by evidence indicating third-party vendor handling **customer data** (implied legitimate access abuse). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.