A selection of theoretical and practical material on information security, databases, personal and commercial user information you can find in the Internet and local networks, and offline. In addition, provides detailed guidelines and instructions for configuring and using the services of the company PKP, CGI proxies, encryption software in the storage and transmission of sensitive data, advice on the use of other means of information protection... VPN-server system company PKP provides the user with a protected communication channel bypassing the main Internet. Using dual-VPN-connections (Double-VPN) allows you to change the apparent IP-address of the user to ensure anonymity and confidentiality of communication, and solutions based on OpenSSL (cryptographic protocol) provide reliable data encryption at every stage of the transfer of information from server to server... Service encrypted communication VoIP-crypt is based on the universal VoIP-application open source, modified by..