Incident Score: Analysis & Impact (COU1770296279)

In this Rankiteo incident briefing, we review the Coupang breach identified under incident ID COU1770296279.

The analysis begins with a detailed overview of Coupang's information like the linkedin page: https://www.linkedin.com/company/coupang, the number of followers: 242085, the industry type: Software Development and the number of employees: 8652 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 306 and after the incident was 126 with a difference of -180 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 and their customers.

On 05 February 2026, Coupang disclosed Data Breach issues under the banner "Coupang Suffers Second Major Data Breach in South Korea, Exposing 165,000 More Customers".

South Korea’s largest e-commerce retailer, Coupang, has disclosed a second significant data breach, exposing the personal information of an additional 165,000 customers.

The disruption is felt across the environment, and exposing Personal information (names, phone numbers, residential addresses), with nearly 165,000 records at risk.

Formal response steps have not been shared publicly yet.

The case underscores how Ongoing, and recommending next steps like Stronger cybersecurity measures, mandatory security reforms.

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.