Description: Message security in the context of data transmission refers to the measures implemented to protect the integrity, confidentiality, and authenticity of messages transmitted in real time. This is crucial in an environment where data flows continuously and can be susceptible to interception or manipulation. Security techniques include encryption, which transforms information into an unreadable format for those without the appropriate key, and authentication, which verifies the identity of users or systems sending or receiving messages. Additionally, security protocols such as TLS (Transport Layer Security) are used to ensure that communication between devices is secure. Message security not only protects sensitive information but also ensures trust in communication platforms, as users must feel secure when sharing personal or financial data. In an increasingly digital world, where data transmission has become ubiquitous, message security becomes a fundamental pillar for protecting information and user privacy.