Incident Score: Analysis & Impact (SHISHI1766750345)
The details regarding individual company incidents & reports gives you full view from every side.
Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Shinsegae'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 Shinsegae 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 Shinsegae breach identified under incident ID SHISHI1766750345.
The analysis begins with a detailed overview of Shinsegae's information like the linkedin page: https://www.linkedin.com/company/shinsegae, the number of followers: 0, the industry type: Retail and the number of employees: 799 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 782 and after the incident was 698 with a difference of -84 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 Shinsegae and their customers.
On 26 December 2023, Shinsegae I&C Inc. disclosed Data Breach issues under the banner "Shinsegae I&C Data Breach".
Shinsegae I&C Inc., the IT arm of retail giant Shinsegae Group, reported a data breach involving the personal data of about 80,000 employees and subcontractors.
The disruption is felt across the environment, affecting Internal intranet system, and exposing Personal data of employees and subcontractors, with nearly 80,000 records at risk.
In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Emergency inspection and protective measures, and stakeholders are being briefed through Press notice.
The case underscores how Ongoing, with advisories going out to stakeholders covering No customer information was compromised.
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 User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating malware infection was likely responsible and Exploit Public-Facing Application (T1190) with lower confidence (40%), supported by evidence indicating compromised via its internal intranet system. Under the Execution tactic, the analysis identified User Execution: Malicious File (T1204.002) with moderate to high confidence (70%), supported by evidence indicating malware infection was likely responsible. Under the Credential Access tactic, the analysis identified OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating corporate ID numbers, names, departments compromised. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating personal data...was compromised via its internal intranet system. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (70%), supported by evidence indicating data breach impacting approximately 80,000 employees. Under the Impact tactic, the analysis identified Data Destruction (T1485) with lower confidence (30%), supported by evidence indicating malware infection was likely responsible. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Shinsegae Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/shinsegae/incident/SHISHI1766750345
- Shinsegae CyberSecurity Rating page: https://www.rankiteo.com/company/shinsegae
- Shinsegae Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/shishi1766750345-breach-december-2025/
- Shinsegae CyberSecurity Score History: https://www.rankiteo.com/company/shinsegae/history
- Shinsegae CyberSecurity Incident Source: https://en.yna.co.kr/view/AEN20251226009600320
- 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