本文详细分析了未经安全增强的主流操作系统所面临的安全问题，对安全操作系统设计理念的局限性进行了总结；
First, security problems faced by mainstream OS that haven't enhanced security mechanism are analyzed in detail, and the limit of traditional design theory is concluded too.
作为NT产品线的一员，Windows 2000把Windows 98的Web集成界面添加到专为工作站和服务器环境而设计的、稳定的、相对安全的操作系统中。
As a member of the nt line, Windows 2000 added Windows 98's Web integration to a stable, relatively secure OS designed for workstation and server environments.
Vista是微软为增进系统的安全性而做的努力，但也许微软做得太过了，结果设计出一个过于防范的操作系统，以致连Vista用户自己都被防范得难以使用。
Vista was Microsoft's attempt to secure the system, but perhaps it went too far and created an operating system so defensive that even users had a difficult time using it.
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