Norton AntiVirus software (version 21.3.0.12) provides real-time protection against viruses, malware, spyware, and other online threats. It includes advanced security features such as a two-way firewall, intrusion prevention, and email scanning to prevent phishing attacks. The software also offers automatic updates and automatic scanning of downloaded files to ensure protection against the latest threats. Finally, Norton AntiVirus comes with free customer support, including online chat and phone support.