Slava Gomzin is author of the book Hacking Point of Sale (Wiley, 2014) and Bitcoin for Nonmathematicians (Universal Publishers, 2016). He is VP of Information Security and Technology at Pieces Technologies, a health tech startup. Previously he was Director of Information Security at Parkland Center for Clinical Innovation (PCCI) and was a security and payments technologist at Hewlett-Packard, where he helped create products that are integrated into modern payment processing ecosystems using the latest security technologies. He blogs about information security and technology at www.gomzin.com.