How does computer virus works?
By moon1688
@moon1688 (144)
China
July 16, 2009 1:03am CST
Computer virus is a very small (usually only a few KB) will continue to self-replication, and infected with hidden code of other programs. It in our computer implementation, and lead to different effects.
It can be computer programs or data disappeared or changed. Computer viruses and other threats to different people it does not require intervention by the process or system will be able to spread out. "Code" that contains a set of unnecessary instructions, when implemented, it spread itself to other computer systems, program. First, it copies itself (Copy) infection in a program or file, when the program or file to execute any command, it is a computer virus will be included in the directive in.
According to the motives of virus creators, these commands can do anything, including the display section of information, delete files or change the data fine, and even damage to computer hardware. In some cases, computer viruses do not attempt to undermine the directive, but is replaced by the virus to occupy disk space, CPU time or network.
1 person likes this
5 responses
@Anandhh (389)
• India
16 Jul 09
A computer virus is a computer program that can copy itself and infect a computer without the permission or knowledge of the owner. The term "virus" is also commonly but erroneously used to refer to other types of malware, adware, and spyware programs that do not have the reproductive ability. A true virus can only spread from one computer to another (in some form of executable code) when its host is taken to the target computer; for instance because a user sent it over a network or the Internet, or carried it on a removable medium such as a floppy disk, CD, DVD, or USB drive. Viruses can increase their chances of spreading to other computers by infecting files on a network file system or a file system that is accessed by another computer.The term "computer virus" is sometimes used as a catch-all phrase to include all types of malware. Malware includes computer viruses, worms, trojan horses, most rootkits, spyware, dishonest adware, crimeware, and other malicious and unwanted software), including true viruses. Viruses are sometimes confused with computer worms and Trojan horses, which are technically different. A worm can exploit security vulnerabilities to spread itself to other computers without needing to be transferred as part of a host, and a Trojan horse is a program that appears harmless but has a hidden agenda. Worms and Trojans, like viruses, may cause harm to either a computer system's hosted data, functional performance, or networking throughput, when they are executed. Some viruses and other malware have symptoms noticeable to the computer user, but many are surreptitious.
Most personal computers are now connected to the Internet and to local area networks, facilitating the spread of malicious code. Today's viruses may also take advantage of network services such as the World Wide Web, e-mail, Instant Messaging, and file sharing systems to spread.Happy Mylotting
@doodoopoop (5)
• United States
16 Jul 09
computer viruses, such as trojans, are the most common and infect your computer in many many ways without you even noticing it! like, holy crap, one time i did an AVG virus scan and found 40 trojans lmfao
@megaplaza (1441)
• Nigeria
16 Jul 09
Some virus are not upto 1kb. I 've seen a batch/com virus tagged BATMAM that is just 25 byte, but can do serious damage. I learnt about batch file virus late last year. They are easy to create. A batch command can wipe out a whole hard disk.
@EliteUser (3964)
• Australia
13 Sep 09
Hey,
I don't actually know how computer viruses work. All I know is that they corrupt your computer files by replacing them with other garbage files, or something like that. And that they delete other files too. Make sure you have a good day, Happy Lotting!!
