"All banks have either been hacked and they about l admit it, or they've been hacked, but they haven't admitted it."
So I'm wondering if this is the same case with gambling sites, and would you trust one that has admitted they've been hacked, or one that keeps it quiet?
If you have money in the right casinos(assuming you are talking about investment based ones) , then most of them offer an address where most of the coins are stored to prove solvency. If they get hacked it would become evident.
As for the trust, its a personal choice, I don't trust either as a casinos can simply claim to be hacked and leave out users with nothing, on the other hand they could be running insolvent(maybe after a hack) which again would mean users will not receive their money that they invested.
This is the truth. The same deal with exchanges. Poloniex was hacked but the admin slowly paid back every single user that lost funds because of it. Funds were insured.