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

An Influence or Wire Fraud?

A 22-year-old Instagram and YouTube influencer named Kayla Massa has been arrested after allegedly convincing her followers to assist her in a fraud scheme, Quartz reports. Prosecutors ...

39 Percent of Organizations Were Victims of a Mobile Attack Despite Improved Security

Brand new data from Verizon shows businesses sacrificed when it comes to mobile security; a decision that caused compromises with impacts well-beyond just a simple breach.

KnowBe4 Named a Leader in 2020 Forrester Wave for Security Awareness

We have some great news to share with our customers and global security professionals alike. KnowBe4 has been named a Leader in The Forrester Wave™ : Security Awareness and Training ...

Why Minimizing Human Error is the Only Viable Defense Against Spear Phishing

Phishing attacks have become one of the business world's top cybersecurity concerns. These social engineering attacks have been rising over the years, with the most recent report from the ...

Spamming Tools are a Commodity in the Criminal Underworld

Cheap and easy-to-use phishing kits and other social engineering tools are readily available for purchase on the black market, according to researchers at Digital Shadows. Criminals ...

Spear Phishing Tops the Canadian Anti-Fraud Center’s List of Attacks

The latest data out of the Canadian Government points out how targeted spear phishing fraud attacks via email are the most lucrative method of attack for cybercriminals in 2019.

WSJ: "Losing $450,000 in Three Days: Hackers Trick Victims Into Big Wire Transfers"

Rachel Louise Ensign wrote a great story for the WSJ about CEO Fraud, also known by the FBI as Business Email Compromise. I'm quoting an extract and I strongly recommend sending a link to ...

A Single BEC Gang is Launching Thousands of Attacks Per Year

A unique cybercriminal group launched business email compromise (BEC) attacks against more than 2,100 companies in the US between April and August 2019, according to researchers at Agari. ...

[EYE-OPENER] Dutch Minister Of Justice And Security: "Fighting Phishing Starts With Awareness"

"The fight against phishing starts with raising the awareness of internet users, stated Justice and Security Minister Grapperhaus. He responded to figures from Dutch banks showing that ...