Norton Security was the computer software security suite developed by Symantec. It works on MS Windows, Mac OS X, Android, and iOS platforms. It’s available in three editions, as Norton Security Standard, Norton Security Deluxe, and Norton Security Premium. Norton Security Standard protects 1 (one) device only. Norton Security Deluxe is good for up to 5 devices, while Norton Security Premium includes protection for up to 10 devices. You can download and install norton setup from norton.com/setup. Learn Norton setup activation process here.