Incident Score: Analysis & Impact (TSM1774419953)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of TSMC'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 TSMC 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 TSMC breach identified under incident ID TSM1774419953.
The analysis begins with a detailed overview of TSMC's information like the linkedin page: https://www.linkedin.com/company/tsmc, the number of followers: 794125, the industry type: Semiconductor Manufacturing and the number of employees: 24423 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 700 and after the incident was 811 with a difference of 111 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 TSMC and their customers.
Taiwan Semiconductor Manufacturing Company (TSMC) recently reported "TSMC Data Breach and Alleged Industrial Espionage", a noteworthy cybersecurity incident.
Taiwan’s Ministry of Justice has proposed amendments to the National Security Act following a high-profile data breach involving Taiwan Semiconductor Manufacturing Company (TSMC).
The disruption is felt across the environment, and exposing Sensitive company data related to sub-2nm chip technology.
Formal response steps have not been shared publicly yet.
The case underscores how Ongoing, teams are taking away lessons such as Need for stronger legal protections against industrial espionage and insider threats in critical technology sectors, and recommending next steps like Enhance penalties and enforcement mechanisms for unauthorized data transfers; improve insider threat detection and prevention, with advisories going out to stakeholders covering Proposed legal reforms to strengthen technology protection and national security.
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 Phishing: Spearphishing Attachment (T1566.001) with lower confidence (30%), supported by evidence indicating insider threat involving former SVP and Valid Accounts (T1078) with high confidence (90%), supported by evidence indicating former TSMC senior vice president allegedly took sensitive data. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (60%), supported by evidence indicating sensitive company data related to sub-2nm chip technology compromised. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating former SVP allegedly took sensitive company data related to sub-2nm chip technology and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating proprietary chip technology (sub-2nm) compromised. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate confidence (50%), supported by evidence indicating alleged unauthorized transfer to Intel and Exfiltration Over Physical Medium (T1052) with moderate to high confidence (70%), supported by evidence indicating insider threat involving physical access to sensitive data. Under the Impact tactic, the analysis identified Defacement: Internal Defacement (T1491.001) with lower confidence (40%), supported by evidence indicating potential reputational damage due to industrial espionage concerns and Search Victim-Owned Websites (T1594) with lower confidence (30%), supported by evidence indicating industrial espionage and technology theft concerns. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- TSMC Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/tsmc/incident/TSM1774419953
- TSMC CyberSecurity Rating page: https://www.rankiteo.com/company/tsmc
- TSMC Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/tsm1774419953-taiwan-semiconductor-manufacturing-company-breach-january-2025/
- TSMC CyberSecurity Score History: https://www.rankiteo.com/company/tsmc/history
- TSMC CyberSecurity Incident Source: https://www.digitimes.com/news/a20260325PD221/tsmc-data-security-legal-taiwan.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