FRISK Software International was an Icelandic software company that developed F-Prot antivirus and F-Prot AVES antivirus and anti-spam 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. It was acquired by Commtouch (now known as Cyren) in 2012. Frisk Software competes in the antivirus industry against Avira, ESET, F-Secure, Kaspersky, McAfee, Panda Security, Sophos and Symantec among others.