A few days ago there was news that Binance had been hacked. This certainly makes us worry, especially Binance is a large exchange that we know that the level of security is very guaranteed. But finally, the security can be hacked by irresponsible parties. I am sure that after that, Binance will review the level of security of the exchange and improve the quality of its security. So, we must believe that our assets will be safe there.
Regarding whether hackers can be stopped, I think the answer is "NO". Hackers will continue to act on things that make them interested and challenged. We don't know what and how they are. hence, we must be vigilant.