How does a virus spreads around a computer?

Answer 1

easy ,by using other types of hacking like: worm: copies themselves into other files.

Trojan: get control of your computer with out knowing also leave personal information for example 'bank card', at risk of being stolen.

Answer 2

Computer Viruses have come a long way since their first appearance in the 1970's. As pieces of programming code, they're written to perform a specific function. Viruses can spread through email attachments, applicationprograms on your computer, or application programs installed from disk drives.

In order to spread through a computer system, or network, a virus must be activated; meaning, the file that contains the virus must be opened, or executed in order for the virus to come to life. Once activated, viruses look for certain programs to infect, depending on what they've been programmed to do. The one thing that all viruses seem to do well is duplicate themselves within the programs they find, and that is how they spread.

Answer 3

They spread through the use of downloading software; sharing USBs and apparently erased used hard drives (though that's extremely uncommon); infected CDs, DVDs and floppy disks, and browsing through the internet in general. If you visit a site with a virus in it, it may silently download the virus, then just pop up somewhere the next time you restart your computer.

This is a good reason to check your CDs and DVDs before you install software using them. Software in CDs and DVDs have protections in them to ensure that they cannot be copied. The protection can be cracked though. Then viruses can be hacked in using this method, which means that if you buy software from a yard-sale or whatever, then you may get a virus from a CD or DVD.

Answer 4

Viruses can get on a computer a few different ways. The most common one is through network sharing such as the Internet. Viruses are just programs that other people made to break/inhibit the computers that they infect. These programs get on your computer by being downloaded. After getting on a computer, the program only needs to run for it to start doing what it was designed to do.

Another way that a virus can get onto a computer is by means of a portable storage device such as a flash drive. However, unlike downloading from the Internet, the portable storage device must be physically connected to the actual computer manually and then run to affect anything.

A third way is for the virus to be created on the computer that it's infecting. Coding for viruses can often be short, and not require any third-party programs to make them. To do this though, the virus creator must have firsthand access to the computer to be able to write the code and save it so that it can be executed.

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Virus get on your computer through flash drives, but especially the internet. They infect your computer especially when you download files, or just by visiting websites that are infected.

Answer 5

Viruses will access your system if your computer is not protected with internet security software's or out of date. Downloading files will cause viruses to access your computer.

Most viruses will settle itself into a folder and will allow other viruses to access the computer. This will cause flooding and will slow down the computer and also damage the O/S.

Answer 6

A Computer virus usually gets in by the internet , just like unwanted cookies. You would need a virus scanner to remove the virus from your computer or laptop .

Answer 7

Virus can be transmitted via Internet,emails,download,disk,network,CD ROM/DVDs,infected webpage or from memory sticks.