VOA慢速英语2014 科学家们试图破除密码

 

Scientists Trying to Do Away With Passwords 科学家们试图破除密码

Hackers² around the world are getting better at stealing passwords. A hacker¹ is a person who uses a computer to gain information without permission. Now, some computer scientists are trying to stop hackers by not using passwords.

The U.S. Military’s Defense³ Advanced Research Projects Agency, DARPA, is responsible for the creation of the Internet. The agency is supporting research projects that will make passwords a thing of the past.

One project is called Active Authentication⁴. Scientists working on the project want to use a person’s individual qualities to protect electronic devices like wireless⁵ phones against hackers. For example, the movement of a person’s hands when they use a wireless phone can be read by sensors⁶. The phone can remember those signs and observe them. The phone locks when someone other than the owner tries to use it.

Other teams of scientists are trying to teach computers and smartphones how to recognize a person’s writing style. The devices will know the words a person uses, how they make sentences and the kinds of errors they make.

In another project, the owner of a device says a phrase instead of typing a password.  Sensors identify the sound and way that a user says words.

DARPA says the projects have had very good results. Some of the largest computer and smartphone manufacturers have expressed interest in using them in new devices.

1 hacker   

n.能盗用或偷改电脑中信息的人，电脑黑客

参考例句：

• The computer hacker wrote that he was from Russia.这个计算机黑客自称他来自俄罗斯。
• This site was attacked by a hacker last week.上周这个网站被黑客攻击了。

2 hackers   

n.计算机迷( hacker的名词复数 )；私自存取或篡改电脑资料者，电脑“黑客”

参考例句：

• They think of viruses that infect an organization from the outside.They envision hackers breaking into their information vaults. 他们考虑来自外部的感染公司的病毒，他们设想黑客侵入到信息宝库中。 来自《简明英汉词典》
• Arranging a meeting with the hackers took weeks againoff-again email exchanges. 通过几星期电子邮件往来安排见面，他们最终同意了。 来自互联网

3 defense   

n.防御，保卫；[pl.]防务工事；辩护，答辩

参考例句：

• The accused has the right to defense.被告人有权获得辩护。
• The war has impacted the area with military and defense workers.战争使那个地区挤满了军队和防御工程人员。

4 authentication   

鉴定，认证

参考例句：

• Computer security technology includes mainly:Authentication,Encryption,Access Control,Auditing and so on.计算机网络安全技术主要有: 认证授权、数据加密、访问控制、安全审计等。

5 wireless   

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。

6 sensors   

n.传感器，灵敏元件( sensor的名词复数 )

参考例句：

• There were more than 2000 sensors here. 这里装有两千多个灵敏元件。 来自《简明英汉词典》
• Significant changes have been noted where sensors were exposed to trichloride. 当传感器暴露在三氯化物中时，有很大变化。 来自辞典例句