KnowBe4 Blog

Keeping you informed. Keeping you aware.
Stay on top of the latest in human and agent security including social and prompt engineering, ransomware and phishing attacks.

Stu Sjouwerman

Founder and Executive Chairman

Stu Sjouwerman (pronounced “shower-man”) is the Founder and Executive Chairman of KnowBe4, Inc., which hosts the world’s most popular integrated security awareness training and simulated phishing platform, with over 54,000 organization customers and more than 50 million users. A serial entrepreneur and data security expert with 30 years in the IT industry, Stu was the co-founder of Inc. 500 company Sunbelt Software, a multiple award-winning anti-malware software company that was acquired in 2010.


Recent Posts

[New Whitepaper] Best Security Practices for AI Prompting and Building Agent Systems

Bob Fabien wrote on X: "While some are still paying over a grand for AI courses, the biggest players are giving away high-value resources at no cost. From prompt engineering to agent ...

Your KnowBe4 Compliance Plus Fresh Content Updates from April 2025

Check out the April updates in Compliance Plus so you can stay on top of featured compliance training content.

Your KnowBe4 Fresh Content Updates from April 2025

Check out the 21 new pieces of training content added in April, alongside the always fresh content update highlights, new features and events.

Exciting Leadership Updates at KnowBe4

To our valued KnowBe4 customers, partners, and community. I wanted to share some exciting developments happening at KnowBe4.

Email Remains the Top Attack Vector for Cyberattacks

Email is still the most common attack vector for cyber threats, according to a new report from Barracuda.