Sorin Mustaca Sorin Mustaca, (ISC)2 CSSLP, CompTIA Security+ and Project+, has been working in the IT security industry since 2000. Until 2003 he worked at RAV Antivirus (acquired by Microsoft in 2003) and between 2003 and 2014 for Avira, where he was responsible for the known Avira AntiVir products used by over 100 million users worldwide. Since the end of 2014 he has run his own consulting company, Sorin Mustaca IT Security Consulting UG (Hfb), helping companies create security products and improve their chances on the market.