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

So What Happens When Kevin Mitnick Meets Joe Perry?

So, Kevin Mitnick Meets Joe Perry from Aerosmith in Australia and someone asks him:

Disruption of Production Due To Malware at Rheinmetall Automotive Costs $4 Million Per Week

In a press release the very large EU company revealed: "The IT infrastructure of Rheinmetall Automotive plants in Brazil, Mexico and the USA has been affected by malware attacks since ...

Phishing Awareness: Considerations for Schools

Educating students and staff about phishing attacks is essential to protecting schools, according to Matt Britland, Director of IT and digital strategy at Alleyn’s School in London. In an ...

Amazon, Paypal, and Gmail Users are the Latest Target in a Sophisticated Multistage Phishing Attack

The latest attack, dubbed “Heatstroke” uses new target-specific phishing kits that may be sold as a “phishing-as-a-service” using new techniques to avoid leaving a trail.

More Than 2.2 Billion Stolen Account Credentials Have Been Made Available on the Dark Web

2019 is looking to be the year of the “data dump”, with more exposed records than any other year, empowering further credential stuffing attacks, according to McAfee.

Crime Sometimes Pays: $1.1M Recovered from U.K. Phishing Scammer 2 Years After Being Caught

We don’t often hear enough stories of cybercriminals being caught and paying back what they’ve stolen, but in the case of scammer Grant West, that’s exactly what has happened.

New Instagram Phishing Scam Uses Familiar (But Fake) 2FA Codes to Trick Victims

Scammers use familiar verification methods to establish credibility and lull the victim into a false sense of security to compromise Instagram accounts.

FBI Issues ‘High-Impact’ Ransomware Attack Warning—What You Need To Know

The FBI has issued a new warning that healthcare organizations, industrial companies, and the transportation sector are being targeted with ransomware. The attack methodologies continue ...

Cybersecurity Awareness Is Not Just For October!

By Joanna Huisman, KnowBe4's new SVP Strategic Insights & Research. I have a big birthday coming up, and as you can probably guess, I’m less than thrilled about it. I tell myself it’s ...

[VIDEO] CEO Stu Sjouwerman Interviewed by Dark Reading

This year at Black Hat 2019, our CEO Stu was interviewed by Dark Reading on regularly training users. Take a look at what we have in store in this video: