续开机，亦或是在办公室与其他访客的直接接触。“未授权用户”利用技术漏洞的第一步即是确定目标系统的明细规范是什么。有两种攻击方式，一种是针对超文本传输协议（HTTP）固有的功能，另一种是预先设定好程序对特定易受攻击对象进行攻击，没有任何具体目标。黑客行动的多变性，警告用户不管是薄弱的还是强大的系统，都应当选择正确的方式来自我保护，不要轻易将授权给其他人。最后，文章列出了避免安全漏洞的解决方案，包括更新补丁、使用复杂的密码、只从可靠的网站或服务中获取信息、及时更新杀毒软件和备份，以保护计算机中的数据不被黑客攻击。

Text 3 Advantages of Cloud computing Abstract：

Cloud of computing is allowing you to use services that include infrastructure applications ,and storage space for a nominal fee. It should be able to quickly allot and relieve resources whenever required by clients and cater to the needs of clients without having to involve clients into management of the service and have real- time backup to offer maximum up time clients. The type of cloud services includes software as a service ,platform as a service ,infrastructure as a service .The advantages of cloud computing under green computing include reducing the consumption of electricity while also reducing emissions that damage the environment ,saving the environment while also saving on the expenses incurred due to a demand for expansion ,and allowing you to let you employees telecommute. Then ,here is a summary about the advantages of cloud computing: remote accessibility , easy expansion ,security and environmentally friendly.

Keys words : advantage 、cloud computing service、 green computing

摘要：

云计算是可以让你使用基础设施和应用程序，并且为象征性的收费提供存储空间的服务。它可以很快分配和释放资源，无论客户何时请求，能够迎合客户的需求，而不需要让客户参与服务的管理；而且它有实时的备份，为客户提供最大的正常运行时间。云服务的类型包括软件即服务模型、平台即服务模型、基础构架即服务模型。绿色背景下云计算的好处是降低了电力消耗，同时也降低了有害环境的排放量；挽救了环境，也节约了由于扩大的需求而带来的费用；允许你的员工远程上班。然后，得出云计算有以下几项优点：远程利用、很容易扩展、安全、环境友好。

关键字：优势、云计算、服务、绿色计算