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

Fake Hotel Website Scams Target Travelers and Hotels

Cybercriminals will take advantage of any situation that separates people from their money. And what better way than to purport to be a reputable hotel and take reservations?

Is it Shark Week at your Organization?

Curiosity for one of the most aggressive and dangerous beasts in the ocean has us dedicating a week to learning about it. Should cyberattacks that put your organization at risk get equal ...

Second Quarter 2018 Top-Clicked Phishing Email Subjects [INFOGRAPHIC]

We've been reporting on the top-clicked phishing email subjects every quarter for a while now across three different categories: general emails, those related to social media, and 'in the ...

WSJ: "Russian Hackers Reach U.S. Power Utility Control Rooms"

Now here is some news that concerns me deeply. I knew it was bad, but I did not know it was this bad.

New Training Module: Safe Travels for Road Warriors

I'm excited to announce a new module that has been quite some time in the making! A 12-minute animated course with lots of interactivity for those that travel for business—and some very ...

Employee Negligence – Your Organization's (bigger than you think) Nightmare

A new study shows a vast majority of C-level executives see employee negligence as one of their most pressing security risks.

New Policy Feature Added to the KnowBe4 Platform

KnowBe4 is excited to announce the introduction of the new Policy feature. The Policy feature gives you as an Admin the ability to store, distribute, and track various policy ...

Scam of the Day: Sextortion, Old Passwords, and You

The “Sextortion” phishing scam makes use of compromised password data, recipient gullibility, and visits to porn websites to separate victims from their money. The scam message comes from ...

Scam Of The Week: *Another* New CEO Fraud Phishing Wrinkle

So, here's a new CEO Fraud phish: see these fresh screen shots from emails reported to us through the free KnowBe4 Phish Alert Button. Bad guys spoof the managing partner and CPA and an ...

Effective Social Engineering Matters More than Zero-Days

There's an interesting criminal campaign in progress against government targets in Ukraine. Note that we usually first see them there, and then they spread out to Western Europe and the ...