The book is devoted to the consideration of issues of computer competitive intelligence, intelligence in open resources of the Internet. Computer competitive intelligence covers automated procedures for collecting and analytical processing of information, which are carried out in order to support management decision-making, increase competitiveness exclusively from open sources in computer networks - websites, blogosphere, social networks, instant messengers, databases. The book discusses various issues of information and analytical activities in a network environment. Elements of information theory, social network analysis, information and mathematical modeling are considered as theoretical foundations of computer competitive intelligence. For a broad range of IT and security professionals