The thesis analyzes concerned hidden trouble of network security , common used method of network attack , the system structure of information system , hierarchy of network security , security evaluation rule of information system , and analyzes the problem of e - business which shall be solved 本文分析了網(wǎng)絡(luò)本身存在的安全隱患,常見(jiàn)的網(wǎng)絡(luò)攻擊方法,信息系統(tǒng)的安全體系結(jié)構(gòu),網(wǎng)絡(luò)安全的層次模型,信息系統(tǒng)的安全評(píng)估準(zhǔn)則,在此基礎(chǔ)上分析了電子商務(wù)要解決的難題。