Most of the hacks on this list are against no-name exchanges. So the old lesson goes, "Don't use exchanges, and if you really have to, don't transfer what you can't afford to lose, and use only the well-known ones" as those have better security measures against hacks.
I can't say that I haven't heard of some of these companies, but 80% of all of them seem like classic exit scams where the owners robbed themselves and accused hackers from North Korea or some other country that is on someone's blacklist. I'm not surprised personally that some people have malicious ideas that they put into action, but when I see the amounts involved, I can't stop being surprised that there are so many naive people in the world who constantly finance such projects.
Should the platform or project take responsibility for this incident? Do you think the current DeFi security system isn't ready to protect the money of investors? Or is it just an inside job disguise as crypto hacking incident?
Of course, they should be held accountable for every incident, and not just morally like that South Korean hypocrite who is still laughing today as if nothing had happened - but they should be sentenced to long-term sentences, and then all their property should be confiscated, sold at auction and give to charity. Those who in any way participate in such projects did not even deserve to get their money back.