Norton Antivirus is a software program designed to protect computers and devices from malware, viruses, and other online threats. It scans files and applications to detect and remove harmful software, helping to keep personal information safe. Norton also offers features like real-time protection, firewall security, and web protection to enhance overall security. In addition to its core antivirus functions, Norton provides tools for optimizing device performance and managing passwords. The software is available for various platforms, including Windows, macOS, Android, and iOS, making it a versatile choice for users looking to secure their digital environments.