Incident Score: Analysis & Impact (NINWEB1781720981)
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Rankiteo Score Impact Analysis
Key Highlights From The Incident Analysis
- Timeline of Nintendo's Ransomware 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 Nintendo 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 Nintendo breach identified under incident ID NINWEB1781720981.
The analysis begins with a detailed overview of Nintendo's information like the linkedin page: https://www.linkedin.com/company/nintendo, the number of followers: 860804, the industry type: Computer Games and the number of employees: 7543 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 694 and after the incident was 619 with a difference of -75 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 Nintendo and their customers.
On 15 June 2024, Nintendo of America disclosed Ransomware issues under the banner "Nintendo Hit by Ransomware Attack Targeting Employee Data via Third-Party Vendor".
Nintendo recently fell victim to a cyberattack by the hacking group *ShadowByt3$*, which threatened to leak stolen employee data unless a $2 million ransom was paid within two days.
The disruption is felt across the environment, affecting TinyPulse HR platform, and exposing 859 MB of sensitive data (names, surveys, bank statements, tax forms, internal documents).
In response, and stakeholders are being briefed through Public statement on June 15.
The case underscores how Ongoing, with advisories going out to stakeholders covering Statement clarifying no customer data 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 Supply Chain Compromise: Compromise Software Supply Chain (T1195.002) with high confidence (90%), supported by evidence indicating breach originated through TinyPulse, a third-party HR platform. Under the Credential Access tactic, the analysis identified Steal Application Access Token (T1528) with moderate to high confidence (70%), supported by evidence indicating tinyPulse HR platform used for employee feedback and performance analytics and OS Credential Dumping (T1003) with moderate confidence (60%), supported by evidence indicating bank statements, tax forms, and other internal documents exfiltrated. Under the Collection tactic, the analysis identified Data from Local System (T1005) with moderate to high confidence (80%), supported by evidence indicating 859 MB of sensitive data...including names, surveys, bank statements, tax forms and Data from Information Repositories (T1213) with moderate to high confidence (80%), supported by evidence indicating tinyPulse HR platform used for employee feedback and performance analytics. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with high confidence (90%), supported by evidence indicating attackers claimed to have exfiltrated 859 MB of sensitive data and Exfiltration Over Web Service (T1567) with moderate to high confidence (70%), supported by evidence indicating threatened to leak stolen employee data unless ransom was paid. Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with moderate confidence (50%), supported by evidence indicating type such as Ransomware, demanded $2M ransom to prevent data leak and Defacement: External Defacement (T1491.002) with moderate confidence (60%), supported by evidence indicating triple extortion tactic targeting TinyPulse directly. Under the Defense Evasion tactic, the analysis identified Valid Accounts (T1078) with moderate to high confidence (80%), supported by evidence indicating accessed via TinyPulse HR platform (third-party vendor). These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.
Sources & References
- Nintendo Rankiteo Cyber Incident Details: https://www.rankiteo.com/company/nintendo/incident/NINWEB1781720981
- Nintendo CyberSecurity Rating page: https://www.rankiteo.com/company/nintendo
- Nintendo Rankiteo Cyber Incident Blog Article: https://blog.rankiteo.com/ninweb1781720981-nintendo-tinypulse-ransomware-june-2026/
- Nintendo CyberSecurity Score History: https://www.rankiteo.com/company/nintendo/history
- Nintendo CyberSecurity Incident Source: https://www.aol.com/articles/nintendo-third-party-program-hit-164042883.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