Hyundai AutoEver America Breach Incident Score: Analysis & Impact (HYU2403224110825)

In this Rankiteo incident briefing, we review the Hyundai AutoEver America breach identified under incident ID HYU2403224110825.

The analysis begins with a detailed overview of Hyundai AutoEver America's information like the linkedin page: https://www.linkedin.com/company/hyundai-autoever-america, the number of followers: 75117, the industry type: IT Services and IT Consulting and the number of employees: 663 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 364 and after the incident was 270 with a difference of -94 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 Hyundai AutoEver America and their customers.

On 07 November 2025, Hyundai AutoEver America disclosed Data Breach issues under the banner "Hyundai AutoEver America Data Breach (2025)".

An unauthorized person gained access to Hyundai AutoEver America’s network and may have acquired records containing personally identifiable information (PII), including names in combination with drivers’ license numbers and Social Security numbers.

The disruption is felt across the environment, and exposing Personally Identifiable Information (PII), with nearly Millions records at risk.

In response, and stakeholders are being briefed through Public disclosure via Globe Newswire; legal firm (Lynch Carpenter, LLP) investigating claims and offering case reviews for affected individuals.

The case underscores how Ongoing (legal investigation by Lynch Carpenter, LLP), with advisories going out to stakeholders covering Affected individuals advised to contact Lynch Carpenter, LLP for case review via their website or provided contact details (Jerry Wells: (412) 322-9243, [email protected]).

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 Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating unauthorized person gained access to Hyundai AutoEver America’s network and Exploit Public-Facing Application (T1190) with moderate confidence (50%), supported by evidence indicating systemic vulnerabilities in Hyundai’s cybersecurity defenses. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating acquired records containing personally identifiable information (PII). Under the Exfiltration tactic, the analysis identified Exfiltration Over Alternative Protocol (T1048) with moderate to high confidence (80%), with evidence including exfiltrated personally identifiable information (PII) of millions, and data exfiltration such as Possible (unauthorized access to records). Under the Impact tactic, the analysis identified Data from Information Repositories (T1598) with high confidence (95%), with evidence including compromised data includes names combined with drivers’ license numbers and SSNs, and large-scale data leak with cascading consequences. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.