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

[New Product] Users Making Security Mistakes? Coach Them in Real-Time with SecurityCoach

We are thrilled to announce a brand-new product designed to help you develop a strong security culture. SecurityCoach enables real-time security coaching of your users in response to ...

Russian trolls and bots are back, targeting Tuesday’s U.S. midterms.

Steven Lee Myers at the NYT had the scoop on this typical Russian influence operation which really is social engineering at scale: "The user on Gab who identifies as Nora Berka resurfaced ...

DHL Tops the List of Most Impersonated Brand in Phishing Attacks

As scammers shift their campaigns and learn from their successes, new data shows that the global delivery service is the current brand of choice, with equally familiar brands trailing ...

New LinkedIn-Impersonated Phishing Attack Uses Bad Sign-In Attempts to Harvest Credentials

With compromised LinkedIn credentials providing cybercriminals with ample means to socially engineer business contacts, this campaign is a stark warning for organizations.

KnowBe4 Wins 2022 "Best Software" Awards From TrustRadius in Multiple Categories

KnowBe4 is proud to be recognized by TrustRadius in the first-ever “Best Software” Awards for overall, mid-size, and enterprise in the Security Awareness Training software category.

Phishing for Feds: Credential-Harvesting Attacks Found in New Study

A study by researchers at Lookout has found that credential-harvesting phishing attacks against US government employees rose by 30% last year. The researchers also found that nearly 50% ...

FBI: Watch Out for Student Loan Forgiveness Scams!

Scammers are taking advantage of the victims desire to take advantage of debt cancellation up to $20,000 – with the only one cashing in being the scammer!

CheckPoint Warns of Black Basta Ransomware as the Number of Victim Organizations Increases by 59%

This latest “new kid on the block” is gaining momentum and – according to CheckPoint – seeing successes with their attacks globally, calling their organizational structure “impressive.”

CISA Warns of Daxin Team Ransomware Group Targeting the Healthcare and Public Health Sector via VPNs

This new group makes the case that – as with any market – cybercriminals will focus on a niche sector they are experts on in order to improve their chances of success.

[On-Demand Webinar] Hacking Biometrics: If You Thought Your Fingerprints Were Safe, Think Again!

When you think of using biometric technology as part of your multi-factor authentication process, you assume these attributes are safe. Cybercriminals can’t hack your fingerprints, can ...