Data Loss Prevention (DLP) is a robust and rapidly advancing cyber security innovation crafted to detect and block the unauthorized or even unintended access, use, or transfer of confidential data. The number of embedded policies and protection systems in companies guarantees that crucial data is constantly safe in the environment. DLP in cyber security not only avoids policy violations and largely data leak but also applies data flow control through networks, endpoints, and clouds so that the data security is guaranteed. It also is a vital part of a comprehensive data loss prevention system that is specifically aimed to overcome those threats, both internal and external, that are against the encrypted data.