Kelby Ludwig is a senior AppSec Engineer at Duo Security. Kelby specializes in secure code review, web application testing, cryptography, and low-friction methods of shipping secure software. Prior to Duo, Kelby was a AppSec Engineer at Praetorian finding vulnerabilities within software produced by Fortune 500 companies and venture-backed startups. Kelby holds a BS in Computer Science from the University of Texas at Austin.