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

Artificial Intelligence Makes Phishing Text More Plausible

Cybersecurity experts continue to warn that advanced chatbots like ChatGPT are making it easier for cybercriminals to craft phishing emails with pristine spelling and grammar, The ...

The Pope, Puff Jackets and Money going POOF!

You have probably seen it. Pope Francis in a designer puff jacket. It fooled millions of people. Culture writer Ryan Broderick called it the “first real mass-level AI misinformation case.”

Australian Police Arrest Business Email Compromise (BEC) Operators

The Australian Federal Police (AFP) have arrested four alleged members of an organized crime group known for carrying out business email compromise (BEC) attacks, BleepingComputer ...

The FBI's Public Service Warning of Business Email Compromise

The US FBI is warning of business email compromise (BEC) attacks designed to steal physical goods. While BEC attacks are typically associated with stealing money, criminals can use the ...

[Eyes Only] New Deepfake Pr0n Site Visits Skyrocket

This is a disgusting topic. It's also a very high social engineering risk. I will keep this post safe-for-work, which is not easy. NBC news just reported on the deepfake economy surging ...

KnowBe4 Debuts Season 5 of Netflix-Style Security Awareness Series - ‘The Inside Man’

We’re thrilled to announce the long-awaited fifth season of the award-winning KnowBe4 Original Series - “The Inside Man” is now available in the KnowBe4ModStore!

Oversharing Is a Risk to Information Security

Younger employees need to be wary of oversharing company information on social media, according to John Karabin, senior director of cybersecurity at NTT Ltd. In an article for ...

New Vendor Email Compromise Attack Seeks $36 Million

The details in this thwarted VEC attack demonstrate how the use of just a few key details can both establish credibility and indicate the entire thing is a scam.

Ransomware Data Theft Extortion Goes up 40% to 70% From ‘21 to ’22

A report from Palo Alto Networks’ Unit 42 found that data theft extortion occurred in 70% of ransomware attacks in 2022, compared to 40% in 2021. The researchers examined the four most ...

Users Clicking on Multiple Mobile Phishing Links Increases 637% in Just Two Years

New data shows that phishing mobile devices as an attack vector is growing in popularity – mostly because it’s increasingly working... in exponential terms.