Bill Sempf
Application Security Architect
Grove City, Ohio, United States
Summary
👤
Senior🎓
Top SchoolBill Sempf is an Application Security Architect with over two decades of hands-on experience securing web and distributed systems, from early HTML work in 1991 to modern SOAP/REST and large-scale transactional architectures. He has led security programs for Fortune 50 finance and large healthcare organizations, installing and integrating tools like Sonar, GitLab and Veracode while building custom test harnesses and vulnerability tooling. An author and frequent speaker (BlackHat, OWASP, DerbyCon) and five-year Microsoft MVP, he pairs technical depth—malware proof-of-concepts, Burp/Metasploit testing, Python threat-intel modules—with practical developer enablement and DevSecOps integration. He’s advised startups and enterprise teams as a tactical architect and contributed cyber strategy analysis for Wikistrat, while also shaping cybersecurity curriculum as an adjunct faculty. Known for blending offensive and defensive perspectives, he’s equally comfortable coding secure services, writing technical books, and lockpicking in his spare time.
14 years of coding experience
15 years of employment as a software developer
BSBA, MIS, BSBA, MIS at The Ohio State UniversityMusic Industry, Music Industry at Capital University
Stackoverflow
976reputation
120kreached
9answers
31questions
Github Skills (52)
scanner10
injection10
burp10
mojolicious10
information-gathering10
perl10
security10
discovery10
dictionary10
fault10
pentest10
user-input10
probability9
python9
cybersecurity9
Programming languages (9)
Github contributions (5)
mccloud006/CSharpForDummies
Jul 2011 - Apr 2012
Contributions:5 commits in 9 months
all-in-onedotnetcsharp
sempf/big-list-of-naughty-strings
Aug 2015 - Sep 2023
Contributions:2 PRs, 2 pushes, 2 branches in 8 years 2 months
naughty-stringsnaughtyinput-datastringsjavascript
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