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

US Gmail Users Are Preferred Phishing Targets

Google has found that most phishing attacks (42%) target Gmail users in the US. Users in the UK were the second most targeted, with 10% of attacks. Japan came in third with 5% of phishing ...

New Phishing Attack Uses Morse Code to Avoid Detection by Email Scanners

Yes – you read that right: Cybercriminals have found a way to use 1830’s technology to trick 2020s security solutions into not identifying phishing attachments as malicious.

New Phishing Attack Uses Google Firebase to Trick Microsoft and Achieve a Spam Confidence Level of Just 1

This new phishing scam takes advantage of inherent trust in credible domains to get past the scrutiny of even Microsoft to trick Office 365 users into giving up their online credentials.

Cannabis Company Loses Millions in BEC Scam

Australian medicinal cannabis company Cann Group has lost $3.6 million in a business email compromise (BEC) attack, Stockhead reports. The company had thought it was paying an unnamed ...

[World Premiere] KnowBe4’s New Season 3 of Netflix-Style Security Awareness Video Series - ‘The Inside Man’

We’re excited to announce Season 3 of the award-winning KnowBe4 Original Series - ‘The Inside Man’. This network-quality video training series delivers an entertaining learning experience ...

There’s Still No Real Answer to the Ransomware Epidemic

With ransomware evolving at a rapid pace, ransoms increasing, and organizations still becoming victims, what’s the answer to stop ransomware once and for all?

Every Employee is Part of Your Security

Employees are an essential component of an organization’s security defenses, according to Nico Popp, Chief Product Officer at Forcepoint. On the CyberWire’s Hacking Humans podcast, Popp ...

Cold Reality Dawns: Covid-19 Is Likely Here to Stay But Your Employees Are Vulnerable

The Wall Street Journal just wrote: "As Covid-19 Vaccines Raise Hope, Cold Reality Dawns That Illness Is Likely Here to Stay. Ease of transmission, new strains, limits of vaccination ...

How the United States Lost to Hackers, And Why The New President Wants To Fix It With 10 Billion Dollars

Nicole Perlroth, the New York Times cybersecurity reporter, just came out with a very interesting perspective on our troubles with foreign adversaries, in part created by our own ...