Norton AntiVirus (NAV), a product of Symantec Corporation, is a popular antivirus program. Its function is to detect and remove viruses.
FRISK Software International (FSI), is an Icelandic software company that develops F-Prot antivirus and F-Prot AVES antivirus and antispam service. Its name is derived from the initial letters of the personal name and patronymic of Friðrik Skúlason, its founder. The company was founded in 1993.