someday a stranger will read your email without your permission or scan the websites you’ve visited.or perhaps someone will casually glance through your credit card purchases or cell phone bills to find out your shopping preferences or calling habits.
in fact，it’s likely that some of these things have already happened to you.who would watch you without your permission? it might be a girlfriend，a marketing company, a boss，a policeman or a criminal.whoever it is，they will see you in a way you never intended to be seen—the 21st century equal to being caught naked(裸露的)．
psychologists tell us boundaries are healthy, though it’s important to reveal(透露)yourself to friends，family and lovers in stages，at appropriate times.actually few boundaries remain.the digital breadcrumbs(面包屑)you leave everywhere make it easy for strangers to reconstruct who you are，where you are and what you like.in some cases，a simple google search can reveal what you think.like it or not，increasingly we_live_in_a_world_where_you_simply_cannot_keep_a_secret. the key question is：does that matter? for many americans, the answer apparently is“no”．when opinion polls ask americans about privacy, most say they are concerned about losing it. a survey found a majority of people are pessimistic about privacy, with 60 percent of respondents saying they feel their privacy is“slipping away, and that bothers me”．
but people say one thing and do another.only a small part of americans change any资源难易程度:★★★★★★★★★★★★★★★
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