Norton Internet Security, developed by Symantec Corporation, is a computer program that provides malware prevention and removal during subscription period and uses signatures and heuristics to identify viruses. Other features include a personal firewall, email spam filtering, and phishing protection. Symantec distributes the product as a download, a boxed copy, and as OEM software.

Norton 360, developed by Symantec, is marketed as an "all-in-one" computer security suite. The package includes an antivirus, a personal firewall, a phishing protection program and a backup program. What distinguishes this suite from Norton Internet Security is the inclusion of file backup and PC maintenance capabilities.