Coinbase, one of the largest cryptocurrency exchanges in the US, has reported a major cyberattack that could cost the company up to $400 million. Cybercriminals have stolen customer data and are attempting to extort a ransom of $20 million. Reports indicate that hackers bribed some employees to leak information that led to the breach. In response to the situation, Coinbase has pledged to reimburse affected customers and has even put a $20 million bounty on the hackers behind the attack. The exchange’s stock has reacted negatively to the news, experiencing significant drops as the company informs the SEC about the breach. This incident marks a troubling moment for Coinbase as it navigates the complicated landscape of cybersecurity threats in the crypto sector.