In a significant cybersecurity breach, Coinbase, the largest U.S.-based cryptocurrency exchange, has confirmed that cybercriminals exploited bribed overseas support staff to access sensitive customer data. The attackers are demanding a $20 million ransom in Bitcoin to prevent the public release of this information. Coinbase has refused to comply with the ransom demand and is offering a $20 million reward for information leading to the arrest and conviction of the perpetrators.
The breach, which affected a small subset of Coinbase’s customers, involved the theft of personal information such as names, birthdates, partial Social Security numbers, and government-issued identification images. Importantly, no passwords, private keys, or customer funds were compromised during the incident. Coinbase estimates that the financial impact of this breach, including remediation costs and customer reimbursements, could range between $180 million and $400 million.
Coinbase has taken immediate action by terminating the involved support staff and implementing enhanced fraud prevention measures. The company is cooperating with law enforcement agencies to investigate the incident and has tagged the attackers’ wallet addresses. Despite the breach, Coinbase’s inclusion in the S&P 500 index is proceeding as planned, underscoring the company’s resilience in the face of this challenge.
This incident highlights the growing risks of insider threats and social engineering attacks in the cryptocurrency industry. As digital assets become more integrated into the global financial system, exchanges like Coinbase must continue to bolster their security protocols to protect user data and maintain trust.