Stu Sjouwerman

Member Since 2021

Stu Sjouwerman

Founder, CEO

KnowBe4, Inc.

Tampa/St. Petersburg, Florida Area

Stu Sjouwerman (pronounced “shower-man”) is the founder and CEO of KnowBe4, Inc. [NASDAQ: KNBE], which hosts the world’s most popular integrated Security Awareness Training and Simulated Phishing platform, with over 54,000 organization customers and more than 25 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.


  • Information Security
  • Internet Security
  • Network Security


November 4th, 2022

The growing threat of cyber attacks on cryptocurrencies

While there are plenty of good crypto projects with good intentions, investors and businesses must tread extremely cautiously while dealing with virtual currencies.

September 14th, 2022

Cybersecurity myths every board member should dismiss

The myths mentioned provide a strong case for boards to make cybersecurity an integral part of their overall purview and accountability.

August 8th, 2022

Phishing: The contagion killing businesses and what you can do to prevent attacks

A multi-layered security approach with technical defenses combined with some cyber common sense can go a long way in protecting your organization from phishing scams and schemes.

July 7th, 2022

Why ransomware attacks are so successful and what your business can do to prevent them

No matter how much money organizations throw at information security every year, the threat of ransomware will persist. Why? Because there is one element in the entire security stack that can neither be programmed nor predicted—us humans.


KnowBe4, Inc.

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.


  • Cyber Security
  • Information Technology
  • Corporate Training