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?.
Actually I also have a strong suspicion about it, a program that was created must have been equipped with high security layers. Especially when it comes to user property rights, such as brand assets on the platform, of course the security of the platform is made as perfect as possible. While there must have been a loophole, it would have taken at least years to get to it and it wasn't easy, unless it was an insider's negligence that led them to lose their exchange assets through their own fault.