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SSS 2009-01-29

时间:2010-05-17 03:03来源:互联网 提供网友:木渐浅。   字体: [ ]
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    (单词翻译:双击或拖选)

This is Scientific American's 60-Second Science. I'm Karen Hopkin. This will just take a minute.

 

We’ve all gotten e-mails warning us about nasty computer viruses. Maybe you even have antivirus software installed on your machine. Well, now scientists say that our wireless1 networks are particularly vulnerable to infection, especially in densely2 populated urban areas.

The use of Wi-Fi routers has become increasingly commonplace, as more people get online at home, at school, at the coffee shop. And these wireless networks are an excellent target for computer viruses, because they’re always on, always connected to the Internet, and don’t have specific software to protect them.

The scientists simulated the infection of real wireless networks in a handful of U.S. cities, including San Francisco, Chicago, New York and Boston. They found that the infection of just a small number of routers triggered an outbreak, with the virus spreading to tens of thousands of routers within a week, most within the first 24 hours. The results are published in the Proceedings3 of the National Academy of Sciences.

Wireless networks are weakened by a general lack of security, including a failure to change the default password. So if you want to keep your network virus-free, at the very least choose a password that’s hard to guess. Like Bosco.

 

Thanks for the minute for Scientific American's 60-Second Science. I'm Karen Hopkin.

 


点击收听单词发音收听单词发音  

1 wireless Rfwww     
adj.无线的;n.无线电
参考例句:
  • There are a lot of wireless links in a radio.收音机里有许多无线电线路。
  • Wireless messages tell us that the ship was sinking.无线电报告知我们那艘船正在下沉。
2 densely rutzrg     
ad.密集地;浓厚地
参考例句:
  • A grove of trees shadowed the house densely. 树丛把这幢房子遮蔽得很密实。
  • We passed through miles of densely wooded country. 我们穿过好几英里茂密的林地。
3 proceedings Wk2zvX     
n.进程,过程,议程;诉讼(程序);公报
参考例句:
  • He was released on bail pending committal proceedings. 他交保获释正在候审。
  • to initiate legal proceedings against sb 对某人提起诉讼
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