Online reported that Dor, product leader of Coinbase, issued a post on the X platform that he handled a fraud case on Friday. After choosing to suspend the transaction and requesting more information about the transaction from the user, he decided to refuse the transaction and restrict the account due to the inability to contact the account owner. The purpose is to protect users from unauthorized account access and withdrawal, but caused a frustrating experience for a legitimate user (users must go through the account recovery process). Coinbase is balancing this situation, now reducing account restrictions by more than 80%, optimizing fraud models by approximately 20% in the past few weeks, and upgrading infrastructure to continuously retrain multiple models. Brain Armstrong, CEO of Coinbase, responded that finding the right balance between reducing account restrictions and ensuring customer safety is crucial.