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Analyze » Coupang » COU1767152366

Incident Score: Analysis & Impact (COU1767152366)

The details regarding individual company incidents & reports gives you full view from every side.

Rankiteo Score Impact Analysis

Rankiteo Incident Impact-49
Company Score Before Incident483 / 1000
Company Score After Incident434 / 1000
Company LinkView Coupang Profile
INCIDENT NUMBERCOU1767152366
Type of Cyber IncidentBreach
ATTACK VECTORNA
DATA EXPOSEDYes
INCIDENT DATE31/12/2024
STATUSpublished

Key Highlights From The Incident Analysis

  • Timeline of Coupang'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 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 breach identified under incident ID COU1767152366.

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 483 and after the incident was 434 with a difference of -49 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 31 December 2025, Coupang disclosed Data Breach issues under the banner "South Korea’s Wave of Data Breaches in 2025".

South Korea’s wave of data breaches in 2025 laid bare how easily basic controls can fail even at the country’s biggest platforms, and how little reassurance certification offered once those failures surfaced.

The disruption is felt across the environment, and exposing Yes.

Formal response steps have not been shared publicly yet.

The case underscores how teams are taking away lessons such as Basic controls can fail even at major platforms, and certifications may not prevent breaches. Enforcement and prevention reforms are needed to change corporate behavior, and recommending next steps like Prepare for regulatory changes, enhance data protection measures, and improve incident response plans.

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 Valid Accounts (T1078) with moderate to high confidence (70%), supported by evidence indicating failure of basic controls even at major platforms and Exploit Public-Facing Application (T1190) with moderate confidence (60%), supported by evidence indicating breaches struck services used by tens of millions. Under the Exfiltration tactic, the analysis identified Automated Exfiltration (T1020) with moderate to high confidence (80%), supported by evidence indicating data breaches exposed personal data of tens of millions and Exfiltration Over Alternative Protocol (T1048) with moderate to high confidence (70%), supported by evidence indicating compromising the personal data of users. Under the Credential Access tactic, the analysis identified Brute Force (T1110) with moderate confidence (50%), supported by evidence indicating failure of basic controls and certification reassurance. Under the Defense Evasion tactic, the analysis identified Disabling Security Tools (T1089) with moderate confidence (60%), supported by evidence indicating basic controls can fail even at major platforms. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.

Initial Access
Valid Accounts (70%)
Exploit Public-Facing Application (60%)
Exfiltration
Automated Exfiltration (80%)
Exfiltration Over Alternative Protocol (70%)
Credential Access
Brute Force (50%)
Defense Evasion
Disabling Security Tools (60%)

Sources & References