Ariel Silverstone is the former Chief Information Security Officer for Expedia, Inc. With over 23 years of experience designing information security processes and policies to address the most demanding challenges in the field, Silverstone is a thought pioneer in information security strategy and engineering, business risk, and management solutions. His specialties include data center and hosting concerns, user authentication, PCI compliance and cloud computing security.   

Prior to joining Expedia, Silverstone was the head of security for Travelport, Director for the Office of the CTO at Symantec, and the CISO for multiple companies.

A frequent speaker at industry events on the topics of security management, business risk and compliance issues, Silverstone also writes a regular column for CIO Magazine, and has been quoted in The Wall Street Journal, BusinessWeek, CSO Magazine, ComputerWorld and other leading publications. He consults and trains security professionals, and has authored or contributed to more than 20 books, numerous magazines, electronic publications, and high-profile research papers, which have been published around the world. He is a frequent contributor to standards bodies and helped author the National Institute of Standards and Technology (NIST) guide to security for the Smart Grid.

Silverstone was recently nominated for “Information Security Executive of the Year” for North America by TEN, and has twice been named to Computerworld’s “Premier 100 in IT” honor.