中文摘要：

计算机病毒的危害性评估是病毒防御中重要的参考指标,由于病毒的危害性复杂,国内外很少有人提出切实可行的评价办法.文章首先对计算机病毒危害性分析,给出一级和二级评价指标.由于这些评价指标带有模糊性,文章提出基于模糊理论的病毒危害性评价模型.依据该模型,只需给出病毒的二级指标的模糊值,就能得合理的危害性等级.最后,文章对熊猫烧香病毒进行模糊评价,评价等级为五级.文章为病毒的危害性评估提供了可行的思路.

英文摘要：

Harms′ evaluation is an important reference for virus′ defense.However,for the harms are very complex,there are few researches on the subject.The paper first analyzes the harms of computer virus and proposes evaluation indexes for both level-one and level-two.As all those evaluation indexes of the harms cannot be numerically assigned clearly,the paper constructs a fuzzy model to evaluate the harms of the virus.If an obscure value is assigned to each evaluation indexes in the second level,the model can work out a proper evaluation result to the given virus.Finally,the paper evaluates the ＂worm.wuhanboy.h＂ by the fuzzy model;the evaluation result is grade 5.Thus the paper opens a flexible way to assess the harms of the viruses.