Top experts in the area of cyber and information security gathered together at the conference CISCO SEC 2016 to introduce the ways for improving the protection of a company before, during and after an attack on its IT systems and to propose what to do when all the traditional security tools had failed. The company Aliter Technologies, as a partner of the conference, with a lecture on the application of security systems in the environment of the government cloud (G-cloud), provided a view on the security principles implemented in the G-cloud and focused on an issue of the security of SDN (software defined networks) management.