Cryptocurrency trading platform Coinbase faced a $400 million scam where criminals used customers' data to swindle funds.
Attackers obtained personal data on less than 1% of customers by bribing overseas Coinbase staff and contractors.
Rather than paying a $20 million ransom demand, Coinbase set up a reward fund for information leading to the criminals' arrest.
The incident highlights the crypto industry's vulnerability to theft, with Coinbase estimating costs between $179m to $400m for remediation and reimbursements.