There are two important things that a casino has which can be a target for hackers, I learned this from the last discussion I started,
https://bitcointalk.org/index.php?topic=5538222.msg65280221#msg65280221The two are - Money which they have, and then the data they hold obtained from KYC.
There is concern about the two, but different levels of importance placed, I think. The data they hold and risk losing is more important to gamblers than the money the money they have, and then to the casino, I believe it will be that they have more importance to the money than the data of the many gamblers. Now based on this, do you feel a casino is more likely to be careless with people's data than they will with money to hackers because most hacks seem to target money they have more?
This is all relative and subjective. If some does KYC and the casino loses money and one guy loses a million while the next guy loses 2 bucks, I think the guy with the million has quite a big problem. It is not good to get hacked and lose a million and get your data lost as there are now people knowing you got money, but I guess it depends. There is no point in ranking money over data or vice versa. A casino should never lose any of it.