Most are located in Costa Rica, Australia, the Caribbean, and Europe, where online gambling licenses are available. For more information on the legal issues concerning online gambling, check with your local authorities. Generally speaking, yes. Legitimate casinos don't need to operate crooked games to make a profit. There's enough profit built-in with the house edge and player mistakes.
Many casinos advertise that their games are tested for fairness.
Some are even audited by Big 6 Accounting Firms like PriceWaterhouseCoopers. Online sportsbooks popularity has skyrocketed due to virtually insured fairness. Online Sportsbooks have no influence over sporting events therefore insuring fairness. There are a few dishonest casinos and sportsbooks out there, but the most common complaint from players is that some online casinos and sportsbooks are slow to pay out winnings. In a few cases, winnings have not been paid out at all.