The perfect theft in crypto is claiming that a project or an exchange is hacked when its all an inside job, the reason why I think about this is I have never heard about other top exchanges helping a exchange that just got hacked to track their funds and get some back at least but if it's a sole hacker from outside they will track him or them down, why is that?.
Some rumors said that the hacking incident in Binance years ago was part of the plan to execute their way of recovering their client funds and make everyone invest in them at ease without worrying about their funds getting hacked anymore. So Yes! things like that in crypto exchanges are happening and there are some exchanges that fake their hacking incident to disappear and run away along with the funds of their users. That's why everyone is recommending us to buy our own hard wallet to meet our crypto assets safe with us.