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  3. They may be just passing your office, computer bag slung over one shoulder. Or they may be sitting in a car outside it, casually

They may be just passing your office, computer bag slung over one shoulder. Or they may be sitting in a car outside it, casually

admin2014-01-07  48
问题     They may be just passing your office, computer bag slung over one shoulder. Or they may be sitting in a car outside it, casually 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 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 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 legitimate users.
    Most companies using wireless networking technology do not take even the simplest of precautions to protect their data. Nearly all wireless network technology comes with some basic security features that need only to be activated in order to give a minimum level of security, for example, by encrypting the data being passed over the network.
    Raymond 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 bulwarks 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 risibly 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 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.
According to the study sponsored by RSA Data Security, two thirds of the subjects
选项 A、had their corporate data stolen.
B、depended on wireless computer networks.
C、were exposed to drive-by hacking.
D、were unaware of the risk of wireless hacking.
答案C
解析 第2段第2句中的in this way指的是前一句开头提到的Drive-by hacking，由此可见，本题应选C。本题最具干扰性的是D，原文该句中的risking．．．表明这些公司要“冒风险”，但至于他们在“冒风险”之前知不知道有这种风险的存在，从原文来看就不可而知了，所以D中的unaware没有原文依据。
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