Hyundai AutoEver America Breach Incident Score: Analysis & Impact (HYU1892418111225)

In this Rankiteo incident briefing, we review the Hyundai AutoEver America breach identified under incident ID HYU1892418111225.

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 597 and after the incident was 521 with a difference of -76 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.

Hyundai AutoEver America (HAEA) recently reported "Hyundai AutoEver America (HAEA) Data Breach (2025)", a noteworthy cybersecurity incident.

Hackers accessed Hyundai AutoEver’s systems between February and March 2025, exposing personal data, including names, Social Security numbers, and driver’s license details.

The disruption is felt across the environment, affecting Hyundai AutoEver America (HAEA) software systems, and exposing names, Social Security numbers and driver’s license details, with nearly 2,000 records at risk.

In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Investigation launched to confirm containment, while recovery efforts such as two years of free credit monitoring for affected users and established hotline (855-720-3727) continue, and stakeholders are being briefed through letters to affected individuals, state filings (Maine, Massachusetts, California) and public advisory via media (e.g., Kelley Blue Book).

The case underscores how Ongoing (as of disclosure; scope assessment and containment confirmed), teams are taking away lessons such as The incident underscores the need for stronger cybersecurity measures in automotive software systems, particularly as vehicles collect increasing amounts of sensitive driver data. Proactive monitoring and faster detection are critical to mitigating risks, and recommending next steps like Automakers should enhance encryption and access controls for customer data, Implement real-time intrusion detection systems to reduce dwell time and Increase transparency with customers about data collection and protection practices, with advisories going out to stakeholders covering Customers advised to monitor financial accounts for unusual activity.

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 hackers infiltrated Hyundai AutoEver America’s (HAEA) systems... gaining unauthorized access for nine days and External Remote Services (T1133) with moderate confidence (60%), supported by evidence indicating unauthorized access to HAEA systems (no specific vector, but remote compromise implied by 9-day dwell). Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (50%), supported by evidence indicating potential vulnerabilities in HAEA’s software systems (implied poor credential storage/protection). Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (95%), supported by evidence indicating exposing personal data... names, Social Security numbers, and driver’s license details. Under the Exfiltration tactic, the analysis identified Exfiltration Over Alternative Protocol: Exfiltration Over Unencrypted/Obfuscated Non-C2 Protocol (T1048.003) with moderate to high confidence (70%), supported by evidence indicating data was accessed but not confirmed if exfiltrated (high-value PII targeted, 9-day dwell suggests likely exfiltration). Under the Defense Evasion tactic, the analysis identified Indicator Removal: File Deletion (T1070.004) with moderate confidence (60%), supported by evidence indicating undetected intrusion for nine days (suggests log tampering or cleanup) and Impair Defenses: Disable or Modify Tools (T1562.001) with moderate confidence (50%), supported by evidence indicating undetected intrusion for nine days (implies evasion of monitoring/alerting). Under the Impact tactic, the analysis identified Data from Cloud Storage (T1530) with moderate to high confidence (80%), supported by evidence indicating hAEA manages software systems for Hyundai/Kia/Genesis (cloud/centralized data likely targeted). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.