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

REvil Ransomware Gang Flexes Its Hiring Muscle With a $1 Million Deposit on a Hacking Hiring Website

Nothing says ransomware is a profitable business more than throwing down a million dollars in an attempt to attract and hire the most talented hackers on the planet.

[HEADS UP] Cybercriminal Sells Info on 186 Million U.S. Voters

In a recent report by NBC News, cybersecurity company TrustWave found a bad guy selling voter registration data on 186 million Americans.

[HEADS UP] Australia Warns Citizens of JobKeeper Phishing Email

The Australian Taxation Office has advised Australians to delete a particular email and to not provide any personal information.

Cybersecurity Awareness Month Weekly Tip: Social Media Safety

Each week during Cybersecurity Awareness Month, we’re going to be sharing in-depth weekly cybersecurity tips from our informative evangelists to help your users make smarter security ...

Middle Management is the Next Target for Phishing Attacks

Mid-level managers need to be particularly wary of targeted phishing attacks, according to Jenn Gast at INKY. Gast explains that criminals can easily conduct open-source research on a ...

[On-Demand] Lessons Learned: An IT Pro’s Experience Building his Last Line of Defense

This is the true story of an IT Manager who was tired of his users clicking everything and wanted to teach them a lesson… in a good way.

Notes on Social Engineering, and What to Do About It

Phishing attacks are growing in prevalence during the pandemic, according to David Dufour, Vice President of Engineering and Cybersecurity at Webroot. Webroot’s recent threat report ...

[HEADS UP] Russian Intelligence Officers Charged With Hacking

In a recent article by the Wall Street Journal, U.S. prosecutors charged six Russian intelligence officers who are accused of engaging in the most destructive cyber attacks of recent ...

The Geography of Business Email Compromise

Researchers at Agari have released a report on the global distribution of business email compromise (BEC) actors, and determined that 25% of these criminals are operating from within the ...