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

KnowBe4 Fresh Content Update & New Features Summary Jan 2018

A lot of new modules have been added to the KnowBe4 ModStore: We refreshed 26 Language versions for our 15 min KMSAT course. (Available now). 20 language versions for Ransomware will be ...

Microsoft Confirms: "Sending Simulated Phishing Attacks to Your Employees Is a Must"

Well, Microsoft just legitimized the whole new-school security awareness training market. I'm pleased to note that Microsoft has finally acknowledged that organizations need to send ...

Cisco: "Cybercrime Swaps Ransomware For Cryptomining, Generating Millions"

Cisco's Talos Threat Intelligence team has a good observation. Cybercriminals can just steal CPU/GPU cycles and directly generate any cryptocurrency without infecting the system with ...

Who's Behind This Massive Wave of DDoS and Phishing Attacks Targeting Dutch Banks?

Shortly after the Dutch Volkskrant newspaper story about Netherlands Intelligence agencies compromising the prominent Russsian Cozy Bear hacking group and providing the US with ...

Phishing Messages from the Dark: When the Bad Guys Write Back

By Eric Howes, KnowBe4 Principal Lab Researcher. For most users the experience of dealing with phishing emails is a solitary experience, whether they recognize that they are under attack ...

Which is the most dangerous global hacking cyber group? – AlienVault research

AlienVault researchers have listed Sofacy, also known as Fancy Bear or APT28, as the most capable hacking group in the world. This was based on ranking the top threat actors which have ...

Scam of The Week: Wave Of Payroll Direct Deposit Phishing Attacks

Lexology had an excellent post from Ogletree Deakins by Rebecca J. Bennett and Danielle Vanderzanden, related to a crafty new phishing scam they warned for and that you should be aware ...

What are “WannaMine” attacks, and how do I avoid them?

It's suddenly all over the news. In hindsight, it was a matter of "not if, but when". Sophos just warned against a new hybrid worm that combines the ETERNALBLUE exploit and cryptomining. ...

KnowBe4 Welcomes Employee No. 400

Something positive for a change. This morning we welcomed employee No. 400 at the staff meeting, and for good measure we also asked employee No. 100, 200, and 300 to come on stage too!