Can computer viruses be spread to other computers over the Internet?

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Computer networks are becoming increasingly mature, changing people's lives and bringing great convenience to everyone. At the same time, computer virus security issues have become a severe challenge that the Internet has to face. So, what are the ways computer viruses spread?

How computer viruses spread:

1. Removable storage media

Removable storage media commonly used in digital products such as computers and mobile phones mainly include: floppy disks, optical disks, DVDs, hard disks, flash memory, U disks, CF cards, SD cards, Memory Sticks, mobile hard disks, etc. Mobile storage media brings great convenience to the spread of viruses due to its portability and large-capacity storage, which is also an important reason why it has become the current mainstream virus spread route. For example, the "U disk killer" (Worm_Autorun) virus is a worm that uses mobile devices such as U disks to spread. The autorun.inf file generally exists in the root directory of each partition of U disk, MP3, mobile hard disk and hard disk. When the user double-clicks the U disk and other devices, the file will use the Windows autoplay function to run the autorun.inf file first, and Immediately execute the virus program to be loaded, causing damage to the user's machine and loss.

2. Various network communications

　 (1) Email. E-mail is the main medium for viruses to spread through the Internet. Viruses are mainly attached to email attachments, and emails themselves do not generate viruses. When a user downloads an attachment, the computer will be infected with a virus, allowing it to invade the system and wait for an attack. Due to the one-to-one and one-to-many characteristics of email, while it is widely used, it also provides a good channel for the spread of computer viruses.

　 (2) Download file . Viruses are bundled or hidden in programs or documents shared on the Internet. Once a user downloads such a program or file without checking for viruses, the chance of being infected with a computer virus will greatly increase. Viruses can infect your computer by downloading them disguised as other programs or hidden in different types of files.

　(3) Browse the webpage. When a user browses an unknown website or mistakenly enters a website with Trojans, the virus will install a virus program in the system while visiting, causing the computer to automatically access the website from time to time, or steal the user's private information, causing losses to the user.

　(4) Chat communication tool. Instant messaging and chat tools such as QQ, MSN, Fetion, and Skype are undoubtedly one of the important means for people to communicate and exchange data. They have become essential software for online life. Due to the security flaws of the communication tools themselves, and the The contact list is rich in information, which provides extremely convenient conditions for the large-scale spread of viruses. Currently, there are hundreds of viruses spread through QQ alone.

The transmission routes of computer viruses have been discussed above. With the development of various anti-virus technologies and people’s understanding of the various characteristics of viruses, through strict control of various transmission routes, the intrusion from viruses will become more and more serious. Come less and less.

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