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

[SEG Headache] More Than Half of Cybersecurity Leaders Say That Too Many Phishing Attacks Get Through

Egress, a cybersecurity company that provides intelligent email security, recently released their Email Security Risk Report 2023.

[Eye on Fraud] A Closer Look at the Whopping 72% Spike in Financial Phishing Attacks"

With attackers knowing financial services fraud-based phishing attacks are best suited for the one industry where the money is, this massive spike in attacks should not come as a surprise.

BatLoader Malware is Now Distributed in Drive-By Attacks

Malign persuasion can take many forms. We tend to hear the most about phishing (malicious emails) or smishing (malicious texts). Other threats are also worth some attention, like the risk ...

More Than Half of all Email-Based Cyberattacks Bypass Legacy Security Filters

New data shows that changes in cybercriminals’ phishing techniques are improving their game, making it easier to make their way into a potential victim user’s inbox.

[Hands-On Defense] Unpatched Software Causes 33% of Successful Attacks

As you all know, KnowBe4 frequently promotes security awareness training and we also mention that unpatched software is a distant number two issue after social engineering.

CyberheistNews Vol 13 #21 [Double Trouble] 78% of Ransomware Victims Face Multiple Extortions in Scary Trend

CyberheistNews Vol 13 #21 | May 23rd, 2023 [Double Trouble] 78% of Ransomware Victims Face Multiple Extortions in Scary Trend New data sheds light on how likely your organization will ...

[Microsoft Warning] A 38% Spike In Business Email Compromise with new Cybercrime-as-a-Service

Microsoft has observed a thirty-eight percent increase in cybercrime-as-a-service (CaaS) offerings for launching business email compromise (BEC) attacks between 2019 and 2022.

AI-generated Disinformation Dipped The Markets Yesterday

The Insider reported that an apparently AI-generated photo faking an explosion near the Pentagon in D.C. went viral. The Arlington Police Department confirmed that the image and ...

[New & Improved] QR Code Phishing with Snail Mail Postcards

One of KnowBe4's long-term employees just send me a picture this morning of a postcard that sure looks like it's phishing, the good old-fashioned way: snail mail ! Here is the picture and ...

[Free Tool] Find out who falls victim to QR code phishing attacks with our QR Code Phishing Security Test

According to QRTIGER, an online QR code generator company, dynamic QR code scans increased 433% globally from 2021 to 2022. In 2022, the FBI released a warning that QR codes may be ...