Online casinos employ a variety of measures to ensure the security of financial transactions, prioritizing the protection of players' sensitive data and funds. They utilize advanced encryption technologies, such as Secure Socket Layer (SSL) encryption, to protect the integrity and confidentiality of data transmitted between users and the casino's servers. Additionally, many online casinos implement stringent authentication processes, including multi-factor authentication (MFA) and identity verification procedures, to ensure that only authorized users can access their accounts.