Common Types of Viruses

Posted by Nunik PW on 15.22 in ENGLISH VERSION, VIRUS,

Today many variations of the virus in circulation, most of which can be grouped into six general categories, each of which is a slightly different kind of how it works:
• boot-sector virus: replacing or inserting itself into the boot sector - an area on your hard drive (or any other disk) to be accessed first when the computer is turned on. This type of virus can prevent you from being able to boot from the hard disk.
• File Virus: infects applications. The virus is executed to spread itself to applications and documents associated with it when the infected file is opened or executed.
• Macro Virus: written using a simplified macro programming language, and Microsoft Office applications such as Word and Excel, and currently account for about 75 percent of this strain has spread across the world. A document infected with a macro virus generally modifies existing orders and widely used (such as the "Save") to trigger itself when the command is executed.
• Multipartite Virus: infects both files and boot-sector - a double guise criminals can continue to infect your system before being captured by antivirus scanners.
• Polymorphic Virus: will changes code when passed on different machines; theoretically virus type is more difficult to be detected by antivirus scanners, but in reality this type of virus is not well written, making it easy for the unknown.
• Stealth Virus: hide himself by making an infected file not appear infected, but the virus of this type are rarely able to deal with the latest anti-virus scanner.