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  3. In a step that should help make the Internet safer for consumers, anti-virus giant Symantec on Wednesday will introduce a protec

In a step that should help make the Internet safer for consumers, anti-virus giant Symantec on Wednesday will introduce a protec

admin2016-04-30  27
问题     In a step that should help make the Internet safer for consumers, anti-virus giant Symantec on Wednesday will introduce a protection system designed to anticipate new ill-meaning programs that try to steal onto your computer.
    For decades, anti-virus protection has worked by reacting to new ill-meaning programs. Researchers rush to identify bad code, then create and distribute filters for it. But cybercriminals have got so fast at escaping the latest filters that protection often comes too late.
    Symantec’s new system, called Quorum, continuously predicts whether any new program that attempts to run on your PC is good or bad. It then takes steps to isolate the bad code. "We’re closing a major gap the bad guys have been using to deliver their ill-meaning software," says Rowan Trollope, senior vice president of consumer products.
    Symantec becomes the fourth major anti-virus firm—and the largest—to add predictive capabilities to traditional reactive anti-virus systems. Since February, McAfee, Panda Security and Trend Micro have introduced similar predictive technologies.
    Computer infections most often spread when a PC user clicks on an altered Web link that arrives in an e-mail or social-network message, or appears in search results for questions on Google, Bing and Yahoo Search. What’s more, millions of lawful Web pages—unknowingly altered by hackers—can also infect a PC during a page visit.
    Cybercriminals use infected PCs to spread junk e-mails, steal data and hijack online banking accounts. Infections can change hourly, forcing anti-virus firms to create and deliver thousands of filters each day. "The amount of ill-meaning software produced today has required all of us to change the approach we take in combating it," says Trend Micro senior manager Jon Clay. Trend began offering predictive protection to business customers in May. A consumer version is due next year.
    "There is a natural evolution taking place," says Mike Gallagher, chief technology officer for McAfee, which rolled out its Artemis system for consumers and businesses in February.
    Symantec introduces Quorum in its new Norton Internet Security 2010 system for consumers priced at $70 for a one-year subscription; McAfee’s consumer subscription is priced similarly. Panda Security’s free consumer version of its Panda Cloud anti-virus product has been out since April.
How does Quorum protect your computer?
选项 A、It continuously updates the anti-virus database in your computer.
B、It reacts to the ill-meaning programs once they run on your computer.
C、It evaluates every new program before it can run on your computer.
D、It automatically refuses unfamiliar software to run on your computer.
答案C
解析 第3段第1句中的predicts及其后的宾语从句表明Quorum系统可以在程序运行之前就识别它是良性的还是恶意的，因此，C的说法正确。A没有原文依据；B中的once they run on the computer不正确，因为Quorum系统是在恶意程序运行前就对其作出评估；D中的unfamiliar software说的过于绝对了，如果这些不熟悉的程序是良性的话，Quorum系统是会允许其运行的。
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