Stu Sjouwerman

Chief Executive Officer & President

Stu Sjouwerman (pronounced “shower-man”) is the founder and CEO 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.

Books

Cyberheist E-Book

Find all of Stu's books on Amazon

Court Ruling: Chubb Insurance Unit Crime Policy Covers ‘Spoofed’ Phishing Wire Transfer

Jul 9, 2018 2:50:02 PM By Stu Sjouwerman

Very interesting article in the Insurance Journal. In a closely-watched case on insurance coverage in an age of expanding cyber risk, a federal appeals court in New York has upheld a ...

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

Jul 9, 2018 9:36:38 AM By Stu Sjouwerman

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 ...

CyberheistNews Vol 8 #27 [Heads-up] Employees Sue Company for W-2 Phishing Scam. Federal Court Decides Triple Damages

Jul 9, 2018 9:32:32 AM By Stu Sjouwerman

"What Exactly Are The Risks Of Breached Passwords?"

Jul 7, 2018 9:08:06 AM By Stu Sjouwerman

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

Jul 7, 2018 7:12:55 AM By Stu Sjouwerman

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

Jul 7, 2018 7:01:44 AM By Stu Sjouwerman

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!

Jul 5, 2018 6:37:52 PM By Stu Sjouwerman

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

Jul 3, 2018 7:17:33 AM By Stu Sjouwerman

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!)

Jul 2, 2018 10:23:00 AM By Stu Sjouwerman

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

Jun 30, 2018 11:23:57 AM By Stu Sjouwerman

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

Jun 28, 2018 3:10:31 PM By Stu Sjouwerman

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 ...

Kiss Your Privacy Goodbye. Exactis Leaks A Database With 340 Million Personal Data Records

Jun 27, 2018 4:09:35 PM By Stu Sjouwerman

Whoa Nellie. Here is the ultimate spear phishing data trove. WIRED reported: "Earlier this month, security researcher Vinny Troia discovered that Exactis, a Palm Coast, Florida-based data ...

When Ransomware Attacks Triple, You Need to Pay Attention!

Jun 26, 2018 5:51:07 PM By Stu Sjouwerman

Security vendor SonicWall just released their latest report on cyberattack volumes… and the numbers are staggering.

CyberheistNews Vol 8 #26 [Heads-up] New Sleeper Strain of SamSam Ransomware Bypasses AV And Stays Hidden On Your Network

Jun 26, 2018 10:35:38 AM By Stu Sjouwerman

Do Employees Open Your Network to the Bad Guys by Using Hacked Passwords?

Jun 26, 2018 10:18:14 AM By Stu Sjouwerman

A whopping 25% of employees are using the same password for all logins. What if that password is available on the dark web? A massive amount of passwords are compromised due to data ...

Don't Underestimate The Economic Side of Russia's Cyber Warfare

Jun 26, 2018 8:51:41 AM By Stu Sjouwerman

I just ran into an excellent article by Boris Zilberman, deputy director of congressional relations and a Russia analyst at the Foundation for Defense of Democracies. It was posted at The ...

Learn From Your Mistakes: Organizations Simply Aren’t Ready

Jun 25, 2018 10:33:01 AM By Stu Sjouwerman

Even with the increase in threats and actual experienced attacks, executive and IT teams alike feel like they’re simply not ready for the next attack.

[Heads-up] Employees Sue Company For W-2 Phishing Scam. Federal Court Decides Triple Damages

Jun 25, 2018 7:13:29 AM By Stu Sjouwerman

Imagine my surprise when I saw a picture of myself in the blog of large North Carolina Law firm Poyner Spruill. It was all good though. They had picked up an example of a real W-2 ...

Exclusive Interview with Kevin Mitnick Ask Me Anything [VIDEO]

Jun 24, 2018 10:58:32 AM By Stu Sjouwerman

KnowBe4's Chief Hacking Officer Kevin Mitnick sat down with our team for an exclusive interview where we could ask him anything… We thought you’d like to hear his answers, too. Ever ...

The FBI recently published its 2017 Cybercrime Report highlighting trends and statistics

Jun 24, 2018 9:29:29 AM By Stu Sjouwerman

The FBI recently published its 2017 Internet Crime Report highlighting trends and statistics compiled by the FBI’s Internet Crime Complaint Center (“IC3”) during 2017. The report compiles ...

Security Awareness Training Blog

View Topics