Incident Score: Analysis & Impact (COU1789987154)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Coupang 酷澎'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 Coupang 酷澎 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 Coupang 酷澎 breach identified under incident ID COU1789987154.
The analysis begins with a detailed overview of Coupang 酷澎's information like the linkedin page: https://www.linkedin.com/company/coupangtaiwan, the number of followers: 104, the industry type: Software Development and the number of employees: 10 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 752 and after the incident was 628 with a difference of -124 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 Coupang 酷澎 and their customers.
Coupang Taiwan recently reported "Coupang Data Breach Affecting 200,000 Taiwanese Customers", a noteworthy cybersecurity incident.
Taiwan’s government fined South Korean e-commerce giant Coupang 1.5 million New Taiwan dollars (approximately $48,000) for a data breach that exposed the personal information of 200,000 Taiwanese customers.
The disruption is felt across the environment, and exposing Names, email addresses, phone numbers, delivery addresses, order records, with nearly 200,000 records at risk, plus an estimated financial loss of 1.5 million New Taiwan dollars (~$48,000 in fines).
In response, and began remediation that includes Compensated affected customers with vouchers worth 45,900 won (~$35) each.
The case underscores how Completed, with advisories going out to stakeholders covering Compensation vouchers issued to affected customers.
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 Unsecured Credentials: Credentials In Files (T1552.001) with moderate confidence (50%), supported by evidence indicating former employee had stored data from a single account. Under the Credential Access tactic, the analysis identified Credentials from Password Stores (T1555) with lower confidence (40%), supported by evidence indicating former employee stored data from a single account. Under the Collection tactic, the analysis identified Data from Local System (T1005) with high confidence (90%), supported by evidence indicating names, email addresses, phone numbers, delivery addresses, order records and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating unauthorized access to customer data. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate confidence (60%), supported by evidence indicating data breach affecting 200,000 Taiwanese customers and Exfiltration Over Physical Medium (T1052) with moderate confidence (50%), supported by evidence indicating former employee stored data (implied physical/local storage). Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating no evidence of destruction, but data was exposed. Under the Defense Evasion tactic, the analysis identified Hide Artifacts: Hidden Files and Directories (T1564.001) with moderate confidence (50%), supported by evidence indicating former employee stored data (potential concealment). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Coupang 酷澎 Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/coupangtaiwan/incident/COU1789987154
- Coupang 酷澎 CyberSecurity Rating page: https://www.rankiteo.com/company/coupangtaiwan
- Coupang 酷澎 Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/cou1789987154-coupang-breach-august-2026/
- Coupang 酷澎 CyberSecurity Score History: https://www.rankiteo.com/company/coupangtaiwan/history
- Coupang 酷澎 CyberSecurity Incident Source: https://en.sedaily.com/finance/2026/09/21/taiwan-fines-coupang-47000-over-data-breach-hitting-200000
- 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