According to “task of cyber security national standards 2018” published by TC260 recently, ITSEC (China Information Technology Security Evaluation Center), CESI (China Electronics Standardization Institute) and related entities will jointly revise GB /T20261-2006 “Information Technology: Systems Security Engineering Capability Maturity Model”. The revision aims on improving the accuracy, adequacy in accordance with newly published laws, regulations and national standards, furthermore, promoting the compatibility to coherent ISO standards.