Coinbase is facing losses between $180 million and $400 million after a targeted insider-driven cyber attack compromised its internal systems.Attackers bribed contractors and employees to gain internal access and impersonated Coinbase staff to trick users into handing over crypto.Coinbase refused to pay a $20 million ransom, promising to reimburse affected users and investigate the breach.The company fired insiders involved in the scam and launched a $20 million bounty fund to track down the attackers.The hack emphasizes cybersecurity threats in the crypto industry, showcasing vulnerability to insider manipulation.Coinbase's estimated losses include breach costs, user reimbursements, and potential legal consequences.Investors reacted with a 4% stock drop after news of the cyber attack.Cryptocurrency platforms, including Coinbase, need heightened security measures to combat evolving attack tactics.Users are advised by Coinbase to remain vigilant against scams and report suspicious activity promptly.The incident serves as a warning for all crypto platforms and users to prioritize security and trust in the sector.