A computer virus is malware that seeks to alter the normal operation of your computer without permission or knowledge of the user. Viruses, usually replace other executable files infected with this code. Viruses can destroy, intentionally, the data stored on a computer, although other more "benign", which is only characterized by being annoying.
Computer viruses are basically spread function, do not replicate themselves because they have no such power as the worm depends on software to spread, are very harmful and some also contain a payload (payload ) with different objectives, from a simple prank to do serious damage to systems or computer-generated block useless traffic.
The operation of a computer virus is conceptually simple. It runs a program that is infected, in most cases, due to ignorance of the user. The virus code is resident (stay) in the RAM of the computer, even when the program containing it has finished running. The virus then takes control of basic operating system, infecting so later, executable files that are called for execution. Finally, add the code of the virus to the infected program and recorded on disc, which replicated the process is complete.
Protection Methods
types and methods to minimize or reduce the risks associated with viruses can be denominated assets or liabilities. Assets
Antivirus: antivirus programs called trying to find traces left by a malicious software, to detect and remove, and in some cases contain or stop pollution. Try to have checked the system while running stopping the known pathways of infection and notifying the user of potential security incidents.
file filters: filters is to create malicious files if the computer is connected to a network. These filters can be used, for example, in the postal system or by using firewall techniques. In general, This system provides security which do not require user intervention, can be very effective, and allow only employ resources more selectively.
Liabilities
-Avoid putting your grain storage equipment removable media that you feel may be infected with a virus.
-Do not install pirated software.
-Avoid downloading software from the Internet.
-Do not open messages from unknown e-mail address.
-general, tend to send "pictures" on the web, who call themselves "mifoto.jpg", have a white square icon with a blue line on the top. In Actually, we are not in the presence of a photo, but a Windows application (*. exe). His real name is "mifoto.jpg.exe" but the final "*. exe" not see why Windows is disabled (default) the display of registered extensions, that is why we only see "mifoto.jpg" and not "mifoto.jpg.exe." When we try opening (double clicking) actually are running the same code that runs under MS-DOS
virus types There are several types of viruses, vary according to function or how it runs on our computer by altering the activity of the same.
0 comments:
Post a Comment