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

Don’t Catch a Case of the (Gand)Crabs!

As irritating as a real case of the crabs can be, organizations now have to deal with GandCrab v4 – a more dangerous and invasive newly released strain of the notorious ransomware. If you ...

"What Exactly Are The Risks Of Breached Passwords?"

First of all, the term means that a particular password is available in a data breach on the dark web–and there are billions of breached passwords out there. KnowBe4 just released a free ...

Context is the Key to Phishing Success

According to the latest report from NIST, one of the most critical factors around whether a user clicks a phishing email or not is context.

Consumer Privacy: California Follows in the Footsteps of GDPR

The California Consumer Privacy Act of 2018 (AB 375) takes effect on January 1, 2020 and will be the most exacting data privacy policy in the United States. Similar to the European ...

Watch Out – Cryptojacking rises 1,180 percent!

As if ransomware wasn’t enough of a problem, the addition coin mining malware’s and a 1,189% mind-bending increase is enough to make you sit up and take notice. Cryptomining is a ...

Nothing is Sacred: Scammers Phish Church Parishioners

Always looking for new ways to separate you from your money, cybercriminals in Canada are using names of priests and archbishops to solicit money.

They’re Trying to Run Malicious Code (And You’re Letting Them!)

According to a new threat report from security vendor eSentire, 91% of endpoint incidents involve files that won’t be defeated/blocked/removed by anti-malware solutions.

KnowBe4’s Year-Over-Year Sales DOUBLE Q2 2018

We doubled our year-over-year sales for Q2, bringing us to well over 19,000 customers worldwide. This makes 21 consecutive up quarters.

Homographic Domains Make Phishing Scams Easier

Is that email from citibank.com or citíbank.com? If you think that last sentence was a mistake, take another look, as you may be the next phishing victim. Cybercriminals are using ...