Firstly , based upon the security requirement of the hierarchy protection standard system and the information - centric concept of the mccumber cube model , the thesis presented a new testing and assessment method not constrained by organizational or technical changes for the protection of the information systems 首先,基于《劃分準則》標準體系結(jié)構(gòu)及其安全要求,將以信息為中心的mccumbercube模型思想引入到信息系統(tǒng)安全等級測評工作中,提出了一種不受技術(shù)發(fā)展和信息系統(tǒng)變化而改變的安全等級測評方法。