Virus stands for Vital Information Resources under Siege.

Antivirus software is designed to detect, prevent and take action against malicious software in your computer, including viruses. Even if you’re smart with how you use your computer to avoid coming into contact with a virus, antivirus software is an essential part of a good security strategy. Antivirus software keeps an eye on all the files that enter your system. All those files are put under a scan to check for any peculiarity or maliciousness. Viruses can easily be transmitted to your network via infected files, and these, in turn, can potentially harm your data and files.