Research on enhancing Bring Your Own Device (BYOD) security in hybrid environments is critically relevant and important to protect data and ensure customer and organizational trust through the development of strong security policies. The study aims to develop and implement effective strategies and interventions that will help ensure that corporate data and resources are protected when employees use personal mobile devices in an environment where both on-premises and cloud-based resources are present. The methods used include analytical, deduction, modeling, statistical, and synthesis methods. This research identified specific vulnerabilities of potential threats to BYOD mobile devices in a hybrid environment and developed security strategies that include recommendations for creating a security policy and using a mobile device management system. The research led to the development of specific technical solutions, such as recommendations for mobile device configuration. This included educating employees and managers about security rules and the importance of adhering to security policies, and updated lists of current BYOD security threats and challenges given the changing threat environment. The practical value of the work lies in providing practical relevance to organizations by providing robust protection of sensitive data and resources, increasing employee comfort and confidence in the security of personal devices, easing IT departments’ tasks of device management and threat detection, and increasing customer and partner confidence in a security-layer organization.