What is the crime of KuCoin?

I'm curious to understand, could you elaborate on the alleged crime committed by KuCoin? I've heard rumors of potential security breaches or financial misconduct, but I'm seeking a clearer picture of the specific accusations. Is it related to unauthorized access of user funds, insider trading, or perhaps a failure to maintain adequate security measures? It's important to have a detailed understanding of the accusations in order to form an informed opinion.