Players should look for several key security certifications when assessing the safety of an online casino, including the Secure Socket Layer (SSL) certificate, which ensures that all data transmitted between the player's device and the casino's servers is encrypted and secure. Additionally, certifications from independent regulatory bodies, such as the United Kingdom Gambling Commission (UKGC), Malta Gaming Authority (MGA), or eCOGRA (eCommerce and Online Gaming Regulation and Assurance), signify that the casino adheres to strict gaming standards and fair play practices.