eCOGRA, which is short from eCommerce Online Gaming Regulation and Assurance is a UK-based casino regulatory agency. It checks online casinos for the fair conduct of the games. In particular, it is concerned with verifying the random number generator (RNG), which is supposed to produce genuinely random outcomes in games. Besides, it monitors the way casinos payout to customers, their involvement in any fraudulent activities, the quality of support, and customer security protection. You have to look for the eCOGRA logo on a casino website to make sure it is a fair gaming provider.