Future energy grids will make extensive use of the integration of ICT technologies. Thus, cyber security risks become a threat even for energy suppliers. Numerous security issues are completely unsolved today, because these special environments require novel security mechanisms and processes. The aim of the project (SG) 2 is therefore a systematic study of smart grid technologies in terms of ICT security issues and the research of countermeasures. Based on a thorough threat and risk analysis from a state-level perspective and security analysis of Smart Grid components, (SG)2 explores measures for power grid operators that serve to increase the security of computer Systems deployed in the future critical infrastructure of energy .