Coinbase has revealed a security breach where attackers bribed overseas customer support agents to access user data through social engineering. The compromised information affected less than 1% of monthly users and included names, addresses, phone numbers, and limited account details. Importantly, no passwords, private keys, or user funds were accessed. The attackers demanded a $20 million ransom, which Coinbase firmly refused to pay. The exchange is now working to enhance internal security and prevent future insider threats.