“Bill Sempf is a software security architect. His breadth of experience includes business and technical analysis, software design, development, testing, server management and maintenance, and security. In his 20 years of professional experience he has participated in the creation of well over 200 applications for large and small companies, managed the software infrastructure of two Internet service providers, coded complex software happily in every environment imaginable, tested the security of all natures of applications and APs, and made mainframes talk to cell phones.

He is the author of C# 5 All in One for Dummies and Windows 8 Programming with HTML5 For Dummies; a coauthor of Effective Visual Studio.NET and many other books, a frequent contributor to industry magazines; and has recently been an invited speaker for the ACM and IEEE, BlackHat, CodeMash, DerbyCon, BSides, DevEssentials, the International XML Web Services Expo and the Association of Information Technology Professionals. Bill also serves on the board of the Columbus branch of the Open Web Application Security Project, and is the Administrative Director of Locksport International.”

In 1992, Bill Sempf was working as a systems administrator for The Ohio State University, and formalized his career-long association with internetworking. While working for one of the first ISPs in Columbus in 1995, he built the second major web-based shopping center, Americash Mall, using Cold Fusion and Oracle. Bill’s focus started to turn to security around the turn of the century. Internet driven viruses were becoming the norm by this time, and applications were susceptible to attack like never before. In 2003, Bill wrote the security and deployment chapters of the often-referenced Professional ASP.NET Web Services for Wrox, and began his career in pen testing and threat modeling with a web services analysis for the State of Ohio. Currently, Bill is working as a security-minded software architect specializing in the Microsoft space. He has recently designed a global architecture for a telecommunications web portal, modeled threats for a global travel provider, and provided identity policy and governance for the State of Ohio. Additionally, he is actively publishing, with the latest being Windows 8 Application Development with HTML5 for Dummies.