SINA is a solution which enables secure communication of computers connected to the network. The system is based on encrypted tunnels, called VPN (Virtual Private Networks), between the communicating devices. SINA is more than just an encryption-secured communication system; it is a complete, secure, information/communication architecture with integrated security elements on various levels of the ISO/OSI communication model, including digital authentication and authorization of devices and persons using the SINA, security policies and encryption.

The SINA system consists of several products which integrate encryption and VPN but are also used for secure processing, storage, transfer and verification of classified and other sensitive information. The SINA system offers scalable solutions aimed at national, international and supranational infrastructures with certification of international security authorities for levels of up to EU SECRET and NATO SECRET.