An antivirus is a software program that is designed to prevent, detect, and remove malware (malicious software) such as viruses, worms, trojan horses, spyware, adware, and others from a computer or network. Antivirus software scans the computer for potential threats and removes them to keep the computer and its data safe and secure. Antivirus software is an essential tool for protecting your computer from cyber attacks and should be regularly updated to ensure maximum protection against the latest threats.