KNOW YOUR COMPUTER VIRUS

computer virus is a computer program that can copy itself. meaning the virus is often equated with meanings malware (adware and spyware counted) which does not have the power to reproduce itself. worm (which exploit network vulnerabilities to copy itself) as well as Trojan horses (programs are entrenched in the system without the power to replicate itself) are also often categorized as a computer virus.
to continue to spread, using a variety of techniques of computer virus spread or disguises that are not easily detected by antivirus. below that is some type of computer virus.

boot sector virus
boot sector virus is a boot sector virus that uses sebegai area to hide himself. is a special area on the boot disk (floppy disk, cd, dvd) filled a variety of information about the harddrive. boot sector transmission method based on the fact that the operating system boot sector is often linked to specific information. when moving the file, the system reads the boot sector to know the location of the file. time boot sector virus infected boot sectors, system reads (and also menjalanakan) code so the virus until the virus is active and ready to spread. However, boot sector viruses become less popular due to the shrinking of use floppy disk called a very efficient media as the virus living area.

browser hijacker
with kerapkalinya internet users are doing searching, virus makers exploit loopholes in the internet browser (internet explorer). most of the action that can be done by a browser hijacker virus that is:
. changing or distorting the destination address is typed in the browser. (This step is usually used to get hit visitors to a specific site and also take advantage of site advertising)
2. install a browser helper object that is used to control the whole browser and get the information stored in the browser. (History, username, password, and the data that is submitted on the form)
3. change system settings like startup programs or internet settings.

injector file virus
injector is a virus file type virus that put him as the file. The virus is fairly common among found. below that is some cii-ciriistik injector file:
. time execution of the infected file, the virus to copy itself to the memory (ram).
2. infected file is modified in such a way that the virus code as the files may diekseskusi first.
3. if there is still virus-free file is executed, the virus is active in memory when it can transmit itself to the executable file.
the file type so often as well as general purpose file injectors ie virus executable files like exe files as well as files com.

macro virus
macro virus can be made only with scripts or macros Idioms owned applications like word processing application. Idioms Idioms are simple macros (shaped commands) that can be used to increase benefits or do specific tasks on the document automation. among the more popular examples of macro virus is the virus melissa apparent in 1999. virus attached to ms doc file documents. it multiplies irim word file to all contacts listed on the mail client.

multipartite virus
multipartite virus is often termed as the hybrid virus was not only due to the media file as sasarn to hide themselves, but also the boot sector. This virus spreads and infects with many steps. The virus put in the virus code in the file and boot sector antivirus for trouble. by because it is, cleaning in between media (file or boot sector alone) could not knock out the virus completely. The same viruses like boot sector viruses are shrinking due to the use of floppy disks as storage media.

Polymorphic viruses
between the methods used by the virus to the virus mendekteksi with code / text constant as the characteristic form of the virus. the virus, code / text marker that usually do not switch. However, polymorphic viruses (poly = many, morph = form) can change the code / text marker each time it infects a file and can produce up to billions of mutations to trick antivirus. with a change in code / text marker, the antivirus can not detect the presence of viruses or files.
polymorphic virus type that is quite popular is sality, virut and xpaj (attacking pe file to file infector viruses are categorized).

site scripting (worm)
many sites are using complex code to produce an attractive appearance. as an example, to show video online on a browser could make the video player. kind of code or script that can be exploited by crackers to infect himself into the computer system that the user sees through the site.
platform that can be used to make a site that is virus visual basic scripting and activex (technology used microsoft highly likely site pages instantly download the program and execute it). on the one hand, module activex quite effective in the management of the site pages, but all lead to exploitable loopholes. due to not ride on a specific file, then this kind of site scripting can be categorized as a worm. examples of this virus is mskunti (local) as well as the cervix.

way out:

time when the virus infected the computer system is known, took the first step taken is to stop the spread of the isolation of computer file or network access. step was to convince the virus does not spread. before time wash with antivirus software, you should do the cleaning with antivirus software. you should do the cleaning with the tool system restore (in windows os) that can restore the registry and other important files on a specific restore point. option to reinstall the operating system can make the final option to remove the virus completely.