In today's mobile-driven world, there is an expectation that apps should always work with and without an internet connection, requiring access and storage of decentralized data directly on devices. Managing decentralized data introduces security risks that must be addressed to protect mobile users and their data. Couchbase Mobile resolves these concerns by providing secure authentication, fine-grained policy tools for controlling data access, end-to-end encryption for data transport and storage, and support for various cloud and device storage options. With its pluggable authentication, data storage on devices is protected using file system encryption and 256-bit AES full database encryption, while data in the cloud is secured with file system encryption. By addressing these security concerns, Couchbase Mobile enables users to manage their data throughout the entire network and application stack, including cloud, phones, tablets, web, TV, cars, and other devices.