When it comes to web application security and penetration testing, Serge is among the best possible instructors to learn from due to his experience, accomplishments, and, quite frankly, his personality. Duplicate badges to walk right through security and access a "secure" facility – did that. Dumpster diving for sensitive information outside of a financial institution – to him, that was “lots of fun.” Create an enterprise-wide, measurably successful security program for a billion-dollar company – one of his many accomplishments. All of them, in scope of the engagements. He’s a published author, President of the Denver Open Web Application Security Project (OWASP) chapter, founder and CEO of the cyber security consulting firm, SpyderSec, he’s discovered multiple 0-days, written OSINT tools for the community, and is a polished presenter who speaks regularly at national conferences. Truly, an expert in the field.