特洛伊木马、蠕虫和其他恶性程序代码形式，业已证明在瘫痪电子邮件系统和因特网供应商方面是非常成功的。
Trojan horses, worms, and other malicious forms have proven to be incredibly successful at paralyzing email systems and Internet providers.
电子邮件蠕虫是引起因特网中垃圾邮件泛滥的原因之一，严重威胁着因特网。
E-mail worms may cause the spread of Internet spam and threaten the security of Internet.
最近一轮又一轮的病毒和蠕虫爆发给因特网带来了灾难，表明了恶意代码作者们企图破坏系统的活动级别不断上升。
The recent rounds of viruses and worms that continue to plague the Internet have indicated an increasing level of activity among malicious code writers trying to exploit systems.
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