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

The Outstanding ROI of KnowBe4's Security Awareness Training Platform

My name is Stu Sjouwerman. I’m the Founder and CEO of KnowBe4, my 5th startup. I have been in IT for 40+ years, the last 25 of those in information security.

New Amazon-Themed Phishing Campaign Targets Microsoft Live Outlook Users

Several months ago, Netskope Threat Labs uncovered a surge in PDF phishing attachments infiltrating Microsoft Live Outlook. These attacks were part of a larger series of phishing ...

Your KnowBe4 Fresh Content Updates from October 2023

Check out the 27 new pieces of training content added in October, alongside the always fresh content update highlights, events and new features.

Celebrating Cybersecurity Awareness Month with KnowBe4: Insights from Our Valued Customers

To celebrate Cybersecurity Awareness Month this year, KnowBe4 customers from various industries and backgrounds are sharing their innovative and exciting approaches to promote ...

Human-Crafted Phishing Emails Only Three Percent More Successful Than AI-Generated Ones, According To IBM

Red teamers at IBM X-Force warn that AI-generated phishing emails are nearly as convincing as human-crafted ones, and can be created in a fraction of the time. The researchers tricked ...

[On-Demand Webinar] The Role of AI in Email Security and How Real-Time Threat Intelligence Can Supercharge Your SOC Team

In response to improved email security measures, cybercriminals have pivoted to more advanced attack methods, namely artificial intelligence (AI), that bypass existing protections. But ...

FBI Warns of North Korean Social Engineering Tactics and Recruitment/Hiring of IT Workers

The U.S. Federal Bureau of Investigation (FBI) and South Korea’s Ministry of Foreign Affairs have issued an advisory offering guidance to “the international community, the private sector, ...

Leadership Less Involved in Cyber-Preparedness Despite a Majority of Orgs Thinking Data Loss from a Cyber Attack Likely in the Next 12 Months

You probably expect executive leadership to not just support cybersecurity efforts, but to be involved. New data shows organizations have a way to go until this is a reality.

Most Organizations Believe Malicious Use of AI is Close to Evading Detection

As organizations continue to believe the malicious use of artificial intelligence (AI) will outpace its defensive use, new data focused on the future of AI in cyber attacks and defenses ...