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1、The Computer Virus 计算机病毒计算机病毒 2021/8/221What is a computer virus?What do viruses do to computers?Whats the deal with Computer Viruses How do viruses spread?2021/8/222计算机病毒定义计算机病毒定义 computer virus definition All that can cause computer fault, destruction of computer data and program collectively refe
2、rred to as a computer virus. 破坏计算机功能或者毁坏数据，影响计算机使用，并能自我复制的一组计算机指令或者程序代码。 中华人民共和国计算机信息系统安全保护条例第二十八条 2021/8/223MYDOOM, MYDOOM, 电邮蠕虫病毒电邮蠕虫病毒2021/8/224PHISHING PHISHING 网络钓鱼网络钓鱼2021/8/225 灰鸽子灰鸽子Gray pigeons2021/8/226 What is a computer virus?A computer virus is a program designed to spread itself by fir
3、st infecting executable files or the system areas of hard and floppy disks and then making copies of itself.（计算机病毒是通过首次计算机病毒是通过首次感染感染可执行文件或者系可执行文件或者系统硬盘和软盘系统区域，进行统硬盘和软盘系统区域，进行传播传播，并且能够自，并且能够自我复制的我复制的程序代码程序代码）2021/8/227Common virus2021/8/228Virus classification木马病毒 Trojan蠕虫病毒 Worm后门病毒 Backdoor脚本病毒 Sc
4、ript宏病毒 Macro系统病毒 Win32、PE捆绑机病毒 Binder下载者病毒 downloader 好好多多种种2021/8/229 How do viruses spread?over execute program 2021/8/2210over a network.网页要求安装网页要求安装外挂程序外挂程序2021/8/2211over flash memory电脑电脑插上受病毒插上受病毒感染的感染的U U盘后盘后，主，主机机本身也本身也会会跟著跟著中毒中毒 2021/8/2212 The spread of the virus through the Internet The
5、spread of the virus through the Internet speedspeedOne day. .2021/8/2213 What do viruses do to computers?damage files interfere with your computers operationtry to spread themselves around.2021/8/2214Effect of computer virus2021/8/2215 Do not melt down your CPUDo not burn out your hard driveDo not c
6、ause your monitor to explodeNote that viruses cant do any damage to hardware:2021/8/2216 Some general tips on avoiding virus infection To data important files backupInstall anti-virus softwarescanning for viruses on a regular basis2021/8/2217If you want to protect your computerUse Antivirus Software
7、！2021/8/2218Some antivirus softwaresSome antivirus softwares2021/8/2219Last，Let me introduce the HackerHackerOf couse ，not the movie2021/8/2220They are hackers夜间活动频繁职业夜间活动频繁职业2021/8/2221 In the computer security context, a hacker is someone who seeks and exploits weaknesses in a computer system or c
8、omputer network. Hackers may be motivated by a multitude of reasons, such as profit, protest, or challenge. * *黑客（黑客（黑客（黑客（HackerHackerHackerHacker） While other uses of the word hacker exist that are not related to computer security, such as referring to someone with an advanced understanding of computers and computer networks, they are rarely used in mainstream context. 2021/8/2222I think2021/8/2223This is all thank you If you dont clap hands, tonight your computer is poisoning鼓掌，否则今晚电脑中毒鼓掌，否则今晚电脑中毒2021/8/2224
