Overtype virus
Overwrite virus is considered the most dangerous type of virus that affects files on a computer. As it may completely and completely destroy the files
And if they spread widely in the device's files, it may lead to damage and disable it, and this dangerous virus is written over the icon of the file on which the command resides in the computer, which leads to changing the content of the file in whole or in part.
Overwrite virus can run across many different operating systems in which devices run; As Windows OS, Linux OS, and Mac OS
There is one way to get rid of the overwriting virus via the computer, which is to permanently delete the files infected with the virus, then restore them through the backup copy, and this virus has common types, including (Grog.377), (Grog.202) virus, and (Grog.456 virus) ), And Loveletter virus; Which is the most dangerous form of overwriting viruses
Macro virus
Macro virus targets computers by adding its code to the macros in different data files; Such as documents, spreadsheets, and others
This type of virus causes changes to or erased the content of infected documents, while some forms of this virus reach the user's email account, and copies of the infected files are sent to all addresses in the user's contact list.
Boot virus
The boot virus, or what is known as the boot sector virus, changes the program for preparing the computer's operating process, which is stored on the device's hard disk or via other storage methods such as floppy disks.
Therefore, it is considered one of the most dangerous viruses that the user's device may be exposed to; The process of getting rid of this type of virus is difficult, as the problem must be addressed by completely reinstalling the operating system.
This type of virus spread greatly in the 1990s, when the use of floppy disks became common among users of computers, and although this type of virus may appear through portable drives and e-mail attachments, its prevalence has decreased dramatically. With improvements to the BIOS architecture
Direct action virus
The mechanism of action of the Direct Action virus (in English: Direct Action virus) is that it travels through the computer when you click on the executable files, which are usually of the type (EXE) or (COM), where the virus resides through it.
When clicking on one of these files, the virus begins to search for other similar files to go to it, and without clicking on such files, this virus does not install itself and remains hidden through the memory of the device, and this virus is considered a non-dangerous virus, which does not usually affect the files significantly. And the existing operating system, and it should be noted that this type of virus can be easily detected and removed by using an anti-virus program.
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تصميم تطبيق مثل حراج
تصميم تطبيق مثل مرسول
تصميم تطبيق مثل طلبات