Do u know what virus actually does?

Question

by priya

Answer 1

A virus is a malicious computer program or programming code that replicates by infecting files, installed software or removable media. A virus usually carries a destructive payload, which varies depending on the virus author’s intentions. A typical virus infects, corrupts or deletes files and folders, damages the system, drops other dangerous parasites, steals or discloses user sensitive information. Extremely dangerous viruses can also wipe out all the data from hard disks and even severely damage certain computer hardware devices.

By replication approaches viruses are divided into three main categories:
1. parasites called file infectors are designed to propagate by infecting or corrupting various files;
2. threats known as boot record infectors spread through removable media containing infected executable code and insert themselves into the master boot record (MBR) on hard disks;
3. widely spread macro viruses affect certain applications such as Microsoft Word or Microsoft Excel and infect documents that can contain macros.

Some viruses do not belong to any of these categories, as they combine features and functions specific to more than one virus type. Such threats, sometimes called hybrid viruses, can infect both files and master boot record and replicate by attaching malicious code to user documents. These parasites are very difficult to completely get rid of, as they usually consist of several components, which automatically reinstall each other after the user have found and removed few of them.

Many viruses have extra features, which allow them to escape detection by antivirus software. Such threats use several approaches to stay hidden. Some of them, known as stealth viruses, monitor antivirus software activity and intercept its requests to the operating system. When the antivirus attempts to check an infected file, the virus immediately passes the original clean variant of that file, so the antivirus is unable to find any malicious code in it. Other parasites, called polymorphic viruses, are able to mutate continuously modifying their code, so that two files infected by the same pest have no common parts. Polymorphic viruses are extremely difficult to detect.

Answer 2

2

Answer 3

virus is kind of application or scripts. its a programming talent .. there is no matter who created or for what he created some time some on want to disturb the computer he will write a simple or complex code that can make ur system as like a hell .. there is lot
of classifications is there eg: virus Trojan spy keyloger snips like lot of classifications but the issue virus can spread by itself like that only one hacker or cracker will write a program . c or C++ is the best language for writing virus.

and windows platform we can get more virus coz OS architecture is very different and Linux is very different type of OS if you need more info mail me maybe i can help you with some sample code how its working and what method .. rember ist only for study purpose other wise i am really sorry

Answer 4

A virus over time can ruin your computer, to the point of where you can't even get online! My other computer was in the repair shop 2 x for this. And I had McAffee anti-virus software on it. Found out its not that great. It travels throught the computer and destroys things inside.

Answer 5

Different kinds of virus do different things to a computer. Some are harmless and other are very destructive. They all require old-fashioned low-level programming skills which the average person does not use.

Answer 6

Virus is a type of computer programme by which e-mails are sent to a computer ,then it is forwarded to all addresses of the address book of the computer, this goes on sending e.g. advertisements, certain messages etc.

Answer 7

Depends on the virus really...some can change things around..some steel important info of your pc...the list is endless

Answer 8

it depends! but in general the viruses fuse with the DNA of the cell it is attacking to reproduce and busts out in the end killing the victim cell and starts over again. (FYI Viruses can not reproduce by them selves!! they need a living cell to invade!)

Answer 9

after this,''slow your computer speed''