操作系统漏洞是指计算机操作系统（如Windows XP）本身所存在的问题或技术缺陷，操作系统产品提供商通常会定期对已知漏洞发布补丁程序提供修复服务。以Windows XP操作系统为例，可以打开“开始”菜单，单击“控制面板”，在新开启的窗口中依次打开“Windows安全中心”和“自动更新”查看当前计算机的自动更新设置。
另外操作系统漏洞导致的浏览器问题也不在该计划范围之内。
Bugs that take advantage of vulnerabilities in the base operating system of the computer running the Web browser will also be ineligible.
问题是微软的操作系统漏洞很多，经常需要更新，不管你装的是否盗版。
The problem is Microsoft's operating system has many holes, which should be updated from time to time, whether your operating system is piratic or not.
基于主动、被动探测攻击目标并分析其数据报的网络特征值，可以得出攻击目标的操作系统类型等重要信息，进而得出与之相关的系统漏洞，为入侵和攻击提供重要依据。
By analyzing the networking character values actively and passively, attacker can get a lot of information about target host, such as the type of operating system.
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