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

AI-Powered Invoice Fraud: How This Latest Scam Hijacks Your Business Transactions

Resecurity is tracking a cybercriminal gang called “GXC Team” that develops and sells tools to facilitate online banking theft and social engineering attacks.

Lockbit 3.0 Ransomware Disrupts Emergency Care at Multiple German Hospitals

Hitting three hospitals within a Germany-based hospital network, the extent of the damage in this confirmed ransomware attack remains undetermined but has stopped parts of operations.

New Research: Phishing Attacks Stole $295 Million In Crypto In 2023

Researchers at Scam Sniffers have found that phishing attacks stole nearly $295 million worth of cryptocurrency from 324,000 victims in 2023, CryptoSlate reports. The cryptocurrency is ...

AI Breaks Free: New Insights into the Latest Chatbot Jailbreak Hack

Fascinating article at TechXplore, December 28, 2023. Computer scientists from Nanyang Technological University, Singapore (NTU Singapore) have managed to compromise multiple artificial ...

AI in 2024: The Top 10 Cutting Edge Social Engineering Threats

The year 2024 is shaping up to be a pivotal moment in the evolution of artificial intelligence (AI), particularly in the realm of social engineering. As AI capabilities grow ...

Your KnowBe4 Fresh Content Updates from December 2023

Check out the 36 new pieces of training content added in December, alongside the always fresh content update highlights, events and new features.

Impersonation Attack Data Breaches Predicted to Increase in 2024

With so much of an attack riding on a cybercriminals ability to gain access to systems, applications and data, experts predict the trend of rising impersonation is only going to get worse.

U.K. Government 'Ill-Prepared' to Deal With High Risk of Catastrophic Ransomware Attacks

A new report from the U.K. government’s Joint Committee on the National Security Strategy (JCNSS) outlines both just how likely an attack on critical national infrastructure is and where ...

[Heads Up] SMTP Smuggling - How It Easily Circumvents Your Email Defenses

A newly-discovered technique misusing SMTP commands allows cybercriminals to pass SPF, DKIM and DMARC checks, allowing impersonated emails to reach their intended victim.