Coinbase is reeling from a costly cyber attack that has already shaved more than 7% off its stock price and could leave the crypto exchange with a staggering $400 million bill. The breach, which the company attributes to compromised overseas contractors, exposed sensitive customer information, including names, addresses, phone numbers, email accounts, and even images of government-issued IDs. cyber attack The San Francisco-based crypto platform said that core security elements—such as passwords and private keys—remained uncompromised. But for affected users, the personal data leak alone is cause for serious concern, especially in an industry built on trust and digital anonymity. In a bold move, Coinbase confirmed that it had refused to pay a $20 million ransom demand issued by the attackers, signaling a hard stance against cyber-extortion. The company has yet to disclose how many customers were impacted, referring only to a “small subset,” but cybersecurity experts warn the exposed data could still be exploited for phishing attacks, identity theft, or social engineering schemes. According to Coinbase, cybercriminals bribed and recruited a group of rogue overseas support agents to steal Coinbase customer data to facilitate social engineering attacks. It said the agents abused their access to customer support systems to steal the account data for a small subset of customers. Early indications suggest the attackers gained access through vulnerabilities linked to third-party overseas contractors—a reminder that supply chain weaknesses continue to haunt even the most tech-savvy corporations. The company is scrambling to “harden” its systems and has announced the formation of a new U.S.-based customer support hub aimed at reducing reliance on international staffing. It's a clear pivot toward tighter oversight in the wake of the breach, which exposed personal data—names, addresses, phone numbers, emails, and government ID images—of what Coinbase insists was a “small subset” of users.

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Contractor Backdoor: Coinbase Faces $400M Blow in Major Data Breach

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