Stu Sjouwerman is founder and CEO of KnowBe4, developer of security awareness training and simulated phishing platforms, with over 56,000 customers and more than 45 million users. He was co-founder of Sunbelt Software, the anti-malware software company acquired in 2010. He is the author of four books, including “Cyberheist: The Biggest Financial Threat Facing American Businesses.”