题目内容
They may be just passing your office, computer bag slung (悬挂) over one shoulder. Or they may be sitting in a car outside it, causally tapping away at a laptop. They look like innocent passers-by. In fact, they are stealing your corporate secrets.
Drive-by hacking is the trendy term given to the practice of breaking into wireless computer networks from outside the buildings that house them. A recent study in the UK, sponsored by RSA Data Security, found that two-thirds of organizations with wireless networks were risking their data in this way. Security experts patrolled (巡逻) several streets in the City of London seeking evidence of wireless networks in operation.
Of 124 that they identified, 83 were sending data without encrypting（加密）them. Such data could readily be picked up by a passer-by armed only with a portable computer, a wireless modem and a few pieces of software that can be freely downloaded from the Internet.
The data could include sensitive company documents containing valuable information. Or they could be e-mail identities and passwords that could be used by hackers to log into corporate networks as if they were legal users.
Most companies using wireless networking technology do not take even the simplest of measures to protect their data. Nearly all wireless network technology comes with some basic security features that need only to be activated (激活) in order to give a minimum level of security, for example, by encrypting the data being passed over the network.
Raymon Kruck, business development manager at Check Point Software, a security technology specialist, believes this could be partly a psychological problem. People see the solid walls of their building as safeguards and forget that wireless networks can extend up to 200 meters beyond physical walls.
Companies without any security at all on their wireless networks make it ridiculously easy for hackers to break in. Switching on the security that comes with the network technology should be automatic. Then there are other basic steps a company can take, says Mr. Kruck, such as changing the passwords on the network from the default (默认) setting.
Companies can also install firewalls, which form a barrier between the internal network and the public Internet. They should also check their computer records regularly to spot any abnormal activity, which might betray the presence of a hacker.
【小题1】According to the study sponsored by RSA Data Security, two thirds of the subjects _______.
| A．had most of their company data stolen |
| B．depended on wireless computer networks |
| C．were exposed to drive-by hacking |
| D．were unaware of the risk of wireless hacking |
| A．The number of computer hacking incidents. |
| B．The number of wireless computer networks identified. |
| C．The way in which data are sent and received. |
| D．The way in which data are hacked and stolen. |
| A．data encryption program |
| B．password security programs |
| C．illegal-user detection |
| D．firewall |
| A．wireless signal administration |
| B．changes in user’s awareness |
| C．users’ psychological health |
| D．stronger physical walls |
| A．book review | B．science fiction | C．textbook | D．computer magazine |
【小题1】C
【小题2】A
【小题3】A
【小题4】B
【小题5】D
解析【小题1】细节理解题。结合A recent study in the UK, sponsored by RSA Data Security, found that two-thirds of organizations with wireless networks were risking their data in this way.可知答案。此处in this way指的是drive-by hacking。
【小题2】细节理解题。结合Of 124 that they identified可知B项在实验中提及；结合Such data could readily be picked up by a passer-by armed only with a portable computer, a wireless modem and a few pieces of software 可知C项在实验中提及；结合they could be e-mail identities and passwords that could be used by hackers to log into corporate networks as if they were legal users可知D项在实验中提及。
【小题3】细节理解题。结合Nearly all wireless network technology comes with some basic security features that need only to be activated (激活) in order to give a minimum level of security, for example, by encrypting the data being passed over the network.
（几乎所有的无线网络技术都有基本的安全功能，只需要被激活就能提供最低级别的安全性，例如，通过把数据加密）可知答案。
【小题4】细节理解题。结合this could be partly a psychological problem可知在Raymond Kruck看来这是个心理问题，需要电脑使用者从意识上改变。
【小题5】文章出处题。文章介绍了使用无线网络时，人们的安全意识不够，易导致信息被盗及如何防范。所以可确定答案为D。
口算能手系列答案