A computer virus is a computer program that can copy itself and infect(传染) a computer without permission or knowledge of the user and runs against his/her wishes.All computer viruses are man-made.Here are some virus prevention tips.Do not open any files(文件) attached to an e-mail from...
根据文中第三段第五到第七句"Computer users have to pay the hackers some money to unlock those files…have taken millions of dollars from people"电脑用户需要给黑客钱才能解锁这些文件,解锁文件的价格从300美元到600美元不等,据说黑客们就此谋取了百万美金,因此可以推断黑客们用这个勒索病毒来谋取钱财。因此...
30.D 细节理解题.根据第一段中A computer virus is a computer program和All computer viruses are man-made可知,计算机病毒是一种人造的计算机程序.故选D. 31.B 细节理解题.根据第五段If you are uncertain,don't download the file at all or download the file to a floppy and test it with your own...
Computer viruses run according to our wishes D. A computer virus is a program or piece of code. 3. When we use e-mail, we should. A. open all the files we receive B. open any file even if we don’t know what it is C.
A computer virus is a computer program that can copy itself and infect(传染) a computer without permission or knowledge of the user and runs against his/her wishes.All computer viruses are man-made.Here are some virus prevention tips.Do n
Computer viruses run according to our wishes,A computer virus is a program or piece of code.,A computer virus is a kind of worm,Not all computer viruses are manmade,Computer viruses run according to our wishes,A computer virus is a program or piece of code.,open all the files we ...
A computer virus is a program that is able to copy itself when it is run. In addition to copying itself, a computer virus can also cause harm.It may delete files or some important information in the computer.Besides, it may make the computer work more slowly. There are many different ...
File Infector Virus A file infector virus spreads by infecting the file system in the operating system (for example, COM, EXE, DOC, and SYS). It is embedded in the source files of a computer. The virus spreads as soon as such a file is operated. Macro virus is a typical type of fil...
A computer virus is a program or piece of code that is loaded onto your computer without your knowledge and runs against your wishes. All computer viruses are manmade. Here are some virus prevention tips. Do not open any files attached to an e-mail from an unknown suspicious or untrustwort...
A computer virus is a type ofmalwarethat attaches itself to a program or file. A virus can replicate and spread across an infected system and it often propagates to other systems, much like a biological virus spreads from host to host. Once a virus has infected a system, it can attach ...