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Stu Sjouwerman

Founder, CEOKnowBe4, Inc.

Clearwater, FL

Member Since June 2021


Information Security
Internet Security
Network Security


Stu Sjouwerman (pronounced “shower-man”) is the founder and CEO of KnowBe4, which hosts the world’s most popular integrated Security Awareness Training and Simulated Phishing platform, with over 56,000 organization customers and more than 45 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 2010. Stu is the author of four books, with his latest being “Cyberheist: The Biggest Financial Threat Facing American Businesses.” From 1996 through 2001, Stu was the Editor-In-Chief of WServer News, an email newsletter to 100,000+ IT system administrators helping them to keep their systems secure. Stu also served as editor of GFI Media Services which published four major online newsletters, including WServer News, WXP News, Win7 News, and GFI Security News. Along with his CEO duties, Stu is currently Editor-in-Chief of Cyberheist News, an e-zine tailored to deliver IT security news, technical updates and social engineering alerts to IT professionals.

Published content

5 best practices for AI governance: Building a culture for responsible AI


To harness AI’s full potential, organizations should establish AI governance—a process that ensures AI risks are identified, assessed, measured, and managed effectively and consistently.                                                                                                   

Five scary deepfake scenarios that can endanger your business


Five real-world scenarios where deepfakes can be used to deceive businesses and launch highly sophisticated social engineering attacks.

How AI is helping to advance CEO fraud and BEC attacks


A defense-in-depth strategy that includes a combination of technical controls, regular security training, and enforcement of policies and procedures is the only solution to counter the risk of BEC attacks.

Everything you ever wanted to know about password managers but were afraid to ask


Let’s explore the pros and cons of using password managers.

The four most intriguing cyberattacks of 2022


To help business leaders better understand how cybercriminals are evolving their attack methods, let’s explore the most intriguing attacks of 2022.

Deepfakes: Get ready for phishing 2.0


With deepfakes, phishing is evolving once again and being called the most dangerous form of cybercrime.

Company details

KnowBe4, Inc.

Company bio

KnowBe4 is a provider of the world’s most popular integrated new-school security awareness training and simulated phishing platform used by more than 37,000 organizations worldwide. KnowBe4 helps organizations address the human element of security by raising awareness of ransomware, CEO fraud and other social engineering tactics through a new-school approach to security awareness training. Kevin Mitnick, internationally recognized computer-security expert and KnowBe4’s Chief Hacking Officer, helped design KnowBe4’s training based on his well-documented social engineering tactics. Thousands of organizations leverage KnowBe4 to train their workforce to make smarter security decisions and create a human firewall as an effective last line of defense. KnowBe4 is headquartered in Tampa Bay, Florida and has offices in the UK, Holland, Germany, Dubai, Singapore, South Africa and Brazil.



Area of focus

Cyber Security
Information Technology
Corporate Training

Company size

501 - 1,000