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  3. Viruses have been around longer than PCs, and are not without a certain mathematical and scientific interest. Indeed, not all vi

Viruses have been around longer than PCs, and are not without a certain mathematical and scientific interest. Indeed, not all vi

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问题 Viruses have been around longer than PCs, and are not without a certain mathematical and scientific interest. Indeed, not all viruses are malignant. Used properly, viral techniques are a valuable programming tool. Used improperly, they are pestilentially destructive. There’s no perfect cure. Like the flu, computer viruses evolve. Last year’s immunization isn’t any good for this year’s disease because every time someone invents a new medication, someone else invents a malady. Nonetheless, a few simple precautions will buffer you against all but the cleverest hacker.
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答案病毒比个人计算机出现得还要早，而且在数学和科学上并不是没有用处。事实上，不是所有的病毒都是有害的。只要正确应用，各种病毒技术可以是有价值的编程工具。应用不当的话，它们则有极大的破坏性。对付病毒没有非常完善的方法。就像流感，计算机病毒也在进化中。去年的免疫方法对今年的疾病是没有办法的，因为有人发明了一种新的治疗方法，就会有人发明新的病毒。然而，几个简单的预防措施可以帮助你减轻病毒的侵害，除了最狡猾的黑客之外。
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