Authors
Retzkin Sion :
Sion Retzkin is an IT and security professional with over 20 years' experience in various technical and business roles. Sion was born in New York City, and has lived, studied, and worked internationally. Sion also delivers training to other professionals on the topics he's mastered, sharing his passion for security, ethical hacking, and information systems. With multiple certifications under his belt, Sion feels comfortable both in the boardroom, meeting customers, and working hands-on. Today, he works at Pcysys, as director of customer success, which allows him to continue to do what he loves.
