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Parity Boot is an example of boot sector virus.
This virus's payload displays the message PARITY CHECK and freezes the operating system, translating the computer useless.
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What is the meaning of boot sector viruses?
A boot sector virus is a virus that's located in or directly modifies a special part of the hard disk in a computer called the boot sector. The boot sector, in basic terms, directs the computer to the things it needs to load the operating system and user interface so you can use it. Viruses that modify the boot sector can be loaded into memory at the same time or even before the operating system, and can prevent the computer from starting up correctly in some cases. Boot sector viruses were more common during the days of DOS, when such viruses had easier access to the boot sector and other sensitive parts of the system. Today, these viruses are not very common because it is more difficult for them to spread and infect.
Where is the virus located?
A computer virus can occupy many different locations on a computer. Some computer viruses are programmed to inhabit the boot sector, while others hide within the computer's system files, and some are included with a specific program.
What are 'prokaryotic organisms' What are some examples?
Bacteria and viruses are examples of prokaryotic organisms.
What are some examples of sicknesses that are not viruses?
strep throat
Which part of a computer does a virus affects?
A virus may destroy all data stored in the hard disk by either formatting it without warning or by destroying some of its sectors.A virus may change the boot sector of the hard disk. If the boot sector of a disk is affected, it cannot boot the computer.The computer viruses are automatically loaded into the main memory of the computer and remain in the memory. This slows down the data accessing speed of the computer.A virus can destroy BIOS of the computer.
What parts of a computer do viruses infect?
Their are many parts of a computer that viruses infect. Most viruses infect a certain file or program so that whenever that file is run, the virus is also executed. Some viruses called Master Boot Record viruses infect the Master Boot Record of your computer. The Master Boot Record is the partition of your computer first executed when you boot up your computer. When you turn on your computer, it runs all the programs inside the Master Boot Record partition and then passes control to other child processes. Viruses in this class infect the Master Boot Record so that whenever your turn on your computer, the viruses runs at startup too. These viruses are very tricky to find as they hide in a very deep part of your Operating System and manually deleting them could damage your computer.
Definition of primary sector?
Primary sector is the economic sector concerning the use of natural goods. Some examples of these goods are forestry, fishing, agriculture, and mining.
Are skin rashes caused by viruses?
Some skin rashes are caused by viruses. Examples are measles, rubella, and coxsackie.
What are some non examples of chlorophyll?
anything that is NOT Green.
Does the bios reside in the Rom?
As a rule, the BIOS then accesses the boot sector on the boot device, which might be a floppy disk, a CD-ROM, a DVD, or a hard disk. The boot sector in turn loads a boot manager program of some kind, which starts up the primary operating system for the machine, such as Windows or Linux.
What are some different kinds of viruses?
Computer Viruses are classified according to their nature of infection and behavior. Different types of computer virus classification are given below.• Boot Sector Virus: A Boot Sector Virus infects the first sector of the hard drive, where the Master Boot Record (MBR) is stored. The Master Boot Record (MBR) stores the disk's primary partition table and to store bootstrapping instructions which are executed after the computer's BIOS passes execution to machine code. If a computer is infected with Boot Sector Virus, when the computer is turned on, the virus launches immediately and is loaded into memory, enabling it to control the computer.• File Deleting Viruses: A File Deleting Virus is designed to delete critical files which are the part of Operating System or data files.• Mass Mailer Viruses: Mass Mailer Viruses search e-mail programs like MS outlook for e-mail addresses which are stored in the address book and replicate by e-mailing themselves to the addresses stored in the address book of the e-mail program.• Macro viruses: Macro viruses are written by using the Macro programming languages like VBA, which is a feature of MS office package. A macro is a way to automate and simplify a task that you perform repeatedly in MS office suit (MS Excel, MS word etc). These macros are usually stored as part of the document or spreadsheet and can travel to other systems when these files are transferred to another computers.• Polymorphic Viruses: Polymorphic Viruses have the capability to change their appearance and change their code every time they infect a different system. This helps the Polymorphic Viruses to hide from anti-virus software.• Armored Viruses: Armored Viruses are type of viruses that are designed and written to make itself difficult to detect or analyze. An Armored Virus may also have the ability to protect itself from antivirus programs, making it more difficult to disinfect.• Stealth viruses: Stealth viruses have the capability to hide from operating system or anti-virus software by making changes to file sizes or directory structure. Stealth viruses are anti-heuristic nature which helps them to hide from heuristic detection.• Polymorphic Viruses: Polymorphic viruses change their form in order to avoid detection and disinfection by anti-virus applications. After the work, these types of viruses try to hide from the anti-virus application by encrypting parts of the virus itself. This is known as mutation.• Retrovirus: Retrovirus is another type virus which tries to attack and disable the anti-virus application running on the computer. A retrovirus can be considered anti-antivirus. Some Retroviruses attack the anti-virus application and stop it from running or some other destroys the virus definition database.• Multiple Characteristic viruses: Multiple Characteristic viruses has different characteristics of viruses and have different capabilities.
What are the active viruses?
Active viruses are causing a disease at this time. Some can become dormant for a time and can be reactivated. Examples are cold sores and shingles.
