Abstract:

Cyberspace security is an interdisciplinary subject involved with computer science and technology,in-formation and communication engineering,control science and engineering and cryptography.It has an explicit and in-depth discipline connotation.First,the concepts of cyberspace security were advanced,and the definition was given.Then,a hierarchy model of cyberspace security was proposed.Based on the model,the details technologies of eight research fields of cyberspace security including information security,information secrecy,information coun-termeasure,cloud security,big data,IOT security,mobile security,and trustable computing were presented.New guidance and experience for the research in cyberspace security could be taken as.

Key words: cyberspace security, hierarchy model, discipline connotation, information security, information countermeasure