“These results show that some users can be profiled just from their usernames，”says Claude Castelluccia，research director of the security and privacy research group at INRIA，and one of the authors of a paper on the work.“More specifically，a profiler could use usernames to identify all the profiles that belong to the same user and then use all the information contained in these sites to profile the victim.”

　　Those who have more unique usernames are more likely to be attacked.The INRIA researchers have created a tool that can check how unique a username is，and thus how easily an attacker could use it to build a profile of a person.

　　Researches are exploring ways that the traces of data that people leave on different websites could be combined and used to track them.A 2010 paper showed that the online groups to which people belonged could be used to infer their real identity in 42 percent of cases.

　　Building profiles of consumers using online information has already become a major industry for marketers as well as online criminals.

　　12．What would be the best title for the passage?

　　A．Look out for online criminals

　　B．Your username may betray you

　　C．Don't leave your traces online

　　D．A unique username is more attractive

　　13．Online marketers may use your username to ______.

【2016年陕西省高考英语二轮复习专题训练卷十七：史地、自然、科普、资讯类阅读理解、信息匹配（二）】相关文章：

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