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A virus has a specific string or line of code. When a virus enters a system, it is usually coded to infect a certain part of the computer, for example, the boot sector. When a virus reaches its destination, it injects the code. The virus itself isn't harmful, the code it injects is. Viruses don't replicate. Worms do that.

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11y ago
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11y ago

Viruses and worms usually send themselves to all of the victim's Outlook contacts, but since very few people use desktop contact programs anymore (since everyone has a cell phone), most troublemakers are now making trojans, which are downloaded by the unsuspecting user in hopes of getting a helpful feature from it.

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11y ago

Viruses are mostly transmitted from the internet to the computer hard drive. Once they save them on the drive they begin their malicious activities by infecting files, folder, system files etc. Virus have ability to create replicas of themselves so that they can be further transmitted through emails, storage devices, one system to another. In the worst case, a virus can corrupt an entire computer which may need a fresh install of the OS.

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14y ago

It can be transmitted over the internet. Also if you do the p2p you can transmit it over the files you send to another computer.

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13y ago

they were spread by emails sent

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Q: How do computer viruses infect and spread in computer systems?
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Related questions

How are Biological Viruses and Computer viruses alike?

Computer viruses can infect a file much like a Biological virus can infect a cell, they then spread from file to file or cell to cell.


Why virus is called virus?

Viruses are called viruses because, like real-world viruses (e.g., influenza and so on), they 'infect' a computer and often spread throughout it by making copies of themselves and making their code part of other programs. Viruses don't usually spread from computer to computer on their own, instead relying on users to pass on infected files or copies of the virus to other users, such as by email.


What viruses are spread by email?

Some computer viruses.


How many peploe get viruses from the computer a year?

Computer viruses are currently unable to spread to humans.


Computer viruses are spread by touching a computers parallel port with unwashed hands?

No, computer viruses are spread via removable media, and the internet


How the adwares can spread?

Adware can be spread from the second it's on your computer just by being there. Because it is on your computer, it can secretely infect every program on your computer, allowing it to infect everything in the system once you open one of the infected programs.


How are most viruses spread from your computer to another computer?

Dowloaded apps from one to another and website's that purposely dowloaded viruses.


What are the steps for the spread of viruses?

if its a computer virus,then call comcast or the computer network you have.


Are bacteria spread the same way as viruses?

Yes. Virus do infect bacteria. They are called bacteriophages. (bacteria eaters)


How can virus be transferred?

Computer viruses are malware programs that can cause damage to your computer. They travel or spread by various means including as an email attachment. They can be disguised as images, videos, audio files, or cards. They can be hidden in other files and spread to your computer when you download something from the Internet.


Can you spread computer viruses through floppy disks?

If you find a computer with a floppy disk port, then yes.


Where do viruses hide inside the human body?

They are not playing hide and seek game.They infect the human cells to spread themselves. This cause disease in human.