Research progress of network security situation awareness
网络安全态势感知研究进展

Firstly, this paper indicated the necessity to research network security situation awareness(NSSA), and provided the concepts, meanings and main tasks of NSSA. Secondly, it surveyed the research progress of NSSA, and elaborated key technologies involved in the research field of NSSA. Finally, put forward the existing difficult problems of NSSA at present and research directions of NSSA in the near future.