Avira Antivirus Pro operations GmbH & Co. KG is a German multinational and family owned company that provides IT security for computers, smart phones, servers and networks. Avira antivirus delivered both software and cloud-based services for its clients. The headquarters are located near Lake Constance, in Tettnang, Germany. The company has additional European offices in Munich, Germany and Bucharest, Romania. Likewise Avira also has sales and marketing offices in Beijing, China, Burlingame, California, USA Silicon Valley.