Download Norton setup file, Norton protects your PC from all kinds of online threats and the also protects from the firewall, anti-spyware and anti-spam protection. Norton Internet Security is not only an online protection program. It is also designed to secure your computer from other threats, not spread through the internet. For example, many external media drives like flash disk drives and hard drives, known to easily transmit malware threats like viruses, Trojans and spyware. And many people use these devices to transfer files and carry personal information that can be destroyed by viruses on these devices.