摘要
随着科技的发展,电脑病毒悄然走近了我们……Computer viruses are small software programs.They are designed to spread from one comput-er to another and to interfere(干预)with computer operation.A virus might delete data on your computer,use your e-mail program to spread itself to othercomputers,or even erase(消除)everything on your hard disk(硬盘).Viruses are most easily spreadby attachments(附件)in e-mail messages or instant messaging messages.That is why it is essen-
