Coinbase Breach Incident Score: Analysis & Impact (COI1766971079)

In this Rankiteo incident briefing, we review the Coinbase breach identified under incident ID COI1766971079.

The analysis begins with a detailed overview of Coinbase's information like the linkedin page: https://www.linkedin.com/company/coinbase, the number of followers: 1329070, the industry type: Financial Services and the number of employees: 7242 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 354 and after the incident was 235 with a difference of -119 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 Coinbase and their customers.

Coinbase recently reported "Coinbase Data Breach Involving Insider Threat", a noteworthy cybersecurity incident.

A former customer service employee at Coinbase allegedly leaked confidential information for personal gain, leading to phishing attacks and the theft of $16 million.

The disruption is felt across the environment, and exposing Sensitive customer data (1% of customer base), with nearly ~400,000 (1% of customer base) records at risk, plus an estimated financial loss of $16 million (stolen), $400 million (potential impact).

In response, teams activated the incident response plan, moved swiftly to contain the threat with measures like Tightened internal security protocols, Enhanced monitoring, and began remediation that includes Stricter internal controls (MFA, audits, AI anomaly detection), User notifications, and stakeholders are being briefed through User notifications, Public disclosure.

The case underscores how Ongoing (U.S. Department of Justice investigation), teams are taking away lessons such as Insider threats and human error remain critical vulnerabilities. Proactive user education, stricter internal controls, and industry-wide information sharing are essential to mitigating risks, and recommending next steps like Implement multi-factor authentication for all staff, Conduct frequent security audits and Use AI for anomaly detection, with advisories going out to stakeholders covering Exchanges must prioritize advanced security measures, rigorous controls, and user education. Regulatory compliance (e.g., SEC) is tightening.

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.

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 Phishing (T1566) with high confidence (95%), with evidence including ronald Spektor orchestrated phishing attacks posing as Coinbase support, and tricked victims into transferring funds or disclosing private keys and Valid Accounts: Local Accounts (T1078.003) with moderate to high confidence (80%), supported by evidence indicating former customer service employee leaked confidential information for personal gain. Under the Credential Access tactic, the analysis identified Unsecured Credentials: Credentials In Files (T1552.001) with moderate to high confidence (70%), supported by evidence indicating sensitive customer data exposed, including account details and Credentials from Password Stores (T1555) with moderate confidence (60%), supported by evidence indicating phishing attacks aimed at disclosing private keys. Under the Exfiltration tactic, the analysis identified Exfiltration Over C2 Channel (T1041) with moderate to high confidence (85%), with evidence including data exfiltration used for phishing attacks, and sensitive customer data compromised (~400,000 records). Under the Impact tactic, the analysis identified Data Encrypted for Impact (T1486) with lower confidence (30%), supported by evidence indicating $16 million in stolen assets via phishing and Account Access Removal (T1531) with lower confidence (40%), supported by evidence indicating phishing victims tricked into transferring funds. Under the Defense Evasion tactic, the analysis identified Use Alternate Authentication Material: Application Access Token (T1550.001) with moderate confidence (60%), supported by evidence indicating former employee exploited internal access to leak data. These correlations help security teams understand the attack chain and develop appropriate defensive measures based on the observed tactics and techniques.