Pay attention to this question! It is not "Is there cheating going on in online poker casinos?" We already know that there are tons of online poker and casino cheats out there working everything from bot and collusion scams to trying to steal your credit card and personal info to use in identity theft scams. Here, I am referring to the reality of an entire online poker room and casino entity being in existence solely to cheat you.
There is nothing to prevent a bunch of crooks from creating a fake online casino or poker room to steal your identity, credit card information or to simply create an online cheat casino where players always loose. At the same time there are many online casinos that are legitimate businesses and will never employ any cheating tactics to steal your money or sensitive information. Everyone knows that the casino business and even gambling in general is a bullet-proof system, i.e. the house always wins in the long run. The honest online casino and poker companies know that and they act just like a land-based casino would--some players will win but the odds are always stacked against the player and it comes down to pure luck when a player wins big; but in the long run the majority of the gamblers will lose more than they win. Therefore, those honest online casino establishments work very hard to build up a good reputation among the players and watchdogs. The more players gamble at the online casino, the more people will lose and more profitable the casino will be.
So in all, I recommend staying away from online poker and online casino sites that you stumble upon and really know nothing about. Some of these might just very well be those online poker cheat and casinos to watch out for!