Most of these "hacks" are inside jobs. They come up with excuses so they can easily run away with users' money. I've seen it time after time and it looks like this will never stop as long as there are greedy people in this world.
I agree as one way to breach the security of blockchains or any other system knowing how the security works on the inside and to do that hackers need someone from the inside to feed them information and with that these multi million exchange breach happens. Hopefully the recent hacking in Bancor does not greatly affect the market as we are now transitioning to a market up trend.