AntivirusAn antivirus is a program used to protect a computer against malicious software such as viruses, Trojan horses, computer worms and other malicious programs. In addition to protecting a computer, antivirus offers many solutions to prevent new infections on your computer by scanning emails and files as they are downloaded. An antivirus program is considered a security strategy. A computer virus is similar to a biological virus; it spreads from one computer to another just like the biological virus spreads from human to human. Computer virus infection is a small piece of software that can damage your computer; it disrupts computer functioning, corrupts and erases data. The spread of a virus can happen in several ways. A virus can be spread by opening attachments to emails or other types of messages, downloading files from the Internet, visiting unknown websites, and installing software. untrustworthy program files. A unique characteristic of a computer virus that differentiates it from other malware is that a computer virus can only spread through human action. The computer virus can be on your computer without your knowledge and the computer virus is only effective when you click on the infected program. A Trojan horse is a program that can see and legitimize software or files, but once the program runs, the damage occurs. in force. The damage ranges from small spam programs on your computer and can go as far as theft of computer data or even destruction and elimination of all information on the computer. Using Trojans, hackers are able to hack into someone's device and control the computer remotely. It only takes a single click, from you or the hacker, to infect the computer. Middle of paper difficult, it is best to delete them unless you are completely sure that it will not harm your computer. One way to check that a virus is really a virus, you can download it from VirusTotal and this program will tell you all the details of the program and define if the program is a virus. It is really difficult to choose the best antivirus solution for your computer. . Of course, we want the best security to protect our computer from malware, but there are many programs to choose from. The criterion for finding the best antivirus solution for you is reliability, user-friendliness, comprehensive protection and quality of protection. Personally, I use Norton Antivirus because it contains multi-layered anti-malware technology that many other antiviruses do not have. Multi-layered means it has layers of protection that a virus must pass through to reach and infect the computer..