英语翻译A computer virus is a computer program that is created t

英语翻译
A computer virus is a computer program that is created to make and spread copies of itself.The program may however also be designed to have other effects on the systems it infects,ranging from the annoying to the disastrous.
Virus attacks are growing rapidly these days.According to BusinessWeek,the 76,404 attacks reported in the first half of 2003 nearly match previous year's total number .As new antivirus tools are more powerful than before,the virus writers are getting a lot smarter with newer and creative ways to attack network systems.Let's first examine some common virus types:
Basic Virus - a piece of software code that is developed to attack computers and network systems via email or Internet connections.It quickly replicates itself and gradually attaches to files,programs or the hard drive.
Trojan Horses - This is a program that doesn't replicate when entering a system but can be effectively used to open 'back doors.' Trojan Horses allow hackers to take control over a particular system or to steal very important data.
Worm - this type of virus is able to spread itself automatically over the network from one computer to the next.During a worm attack,users' computers get infected without even having to click open email attachment or any program,etc.
Since it is very difficult to avoid the virus,your best defense is a powerful antivirus program.In order to fight with such viruses,the software vendors should focus on making their products more robust.This may ask for a trade-off between user-friendliness and security.In specific cases it may require line-by-line inspection,code retooling and even systems automation to defend the installed programs.

计算机病毒是被建立做并且传播自己的拷贝的一个计算机程序.计划也可能被设计无论多么对它传染的系统有其它影响,在之间变化对灾难性讨厌.
病毒进攻近日来迅速日益增长.根据BusinessWeek,在第一中被报告的76,404次进攻一半2003年几乎与前一年的整个的数字匹配.当新的抗病毒素工具比以前更强大时,病毒作者以新和较创造性的的方法变得聪明的许多进攻网络系统.让我们首先检查一些普通的病毒类型：被发展通过电子邮件或者因特网联系进攻计算机和网络系统的基本的病毒一片软件代码.它迅速复制自己并且逐渐连接到文件,计划或者艰难的驱车.
特洛伊马--这是当进入一个系统时不复制的一个计划但是能有效地使用打开‘后门’.特洛伊马允许黑客进行对一个特殊的系统的控制或者偷窃十分重要的数据.
蠕虫--这种类型的病毒能够其次把自己自动地传播过从一台计算机的网络.在一条蠕虫进攻期间,用户的计算机传染没有不得不甚至不得不单击打开的电子邮件配属或者任何计划等等
由于避免病毒是十分困难,你的最好的防御是一种强大的抗病毒素计划.为了战斗这样病毒,软件销售商应该着重于使他们的产品成为健壮的更多.这可能要求得到一种贸易用户friendliness和安全.在具体的情况下它可能要求线作者署名检查,代码更换工具以及甚至系统自动化捍卫安装的计划.