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

Why Companies Have Great Success Training Employees With Simulated Phishing Tests

We occasionally learn of articles and papers that claim that security awareness training and/or simulated phishing campaigns are not effective. We don’t want to disparage what these ...

Verizon: Pretexting Now Tops Phishing in Social Engineering Attacks

The New Verizon DBIR is a treasure trove of data. As we covered here, and here, people are one of the most common factors contributing to successful data breaches. Let’s drill down a bit ...

Verizon: 74% of Data Breaches Involve the “Human Element”

People are one of the most common factors contributing to successful data breaches. Let’s dive in deeper into the latest Verizon Data-Breach Investigations Report (DBIR) to find out how ...

Smishing Campaign Expands to the Middle East

A Chinese-speaking phishing gang has expanded its targeting from the Asia-Pacific region to the Middle East, researchers at Group-IB have found. The gang, which the researchers call ...

Verizon: Email Reigns Supreme as Initial Attack Vector for Ransomware Attacks

My analysis of this year’s newly-released Verizon Data Breach Investigations Report begins with ransomware findings that point back to users as a big problem.

North Korean Phishing Campaign Targeting Think Tanks, Academics and Media

The U.S. and South Korean governments have issued a joint advisory outlining a North Korean phishing campaign, The Register reports. The threat actor, known as “Kimsuky,” is targeting ...

CyberheistNews Vol 13 #23 [Wake-Up Call] It's Time to Focus More on Preventing Spear Phishing

CyberheistNews Vol 13 #23 | June 6th, 2023 [Wake-Up Call] It's Time to Focus More on Preventing Spear Phishing Fighting spear phishing attacks is the single best thing you can do to ...

[FBI ALERT] Skin Deep: The Scary Reality of New Deepfake-Enabled Sextortion

Today, the FBI alerted warned against a new even more disgusting type of sextortion. Previously, these schemes involved coerced or stolen digital material, but now some criminals are ...

New Phishing Campaign Uses Hyperlinked Images for Fake Gift Cards and Promotions

A phishing campaign is using hyperlinked images in order to trick users into visiting malicious sites, according to Jeremy Fuchs at Avanan. The emails contain images that offer gift cards ...

Be a Certified Security Awareness and Culture Professional (SACP)™

All, I thought it was necessary to have an independent, vendor-neutral Cert so we would have a real Certified Security Awareness and Culture Professional (SACP)™. I funded the effort ...