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

New Report: Mobile Phishing on the Rise

Jul 13, 2018 1:28:53 PM By Stu Sjouwerman

With users being three times more likely to click on a suspicious link on their mobile device, along with over half of mobile users tapping on a phishing URL, mobile phishing is a bigger ...

[Scam Of The Week] Amazon Prime Day Is Only 4 days away

Jul 12, 2018 4:35:15 PM By Stu Sjouwerman

It's a prime opportunity for the bad guys to send a raft of phishing attacks. We do have a "Free Amazon Prime Account" template that we just modified to fit a Prime Day-style scam. It's ...

From the Phishing Archives: Just How Far Will Cybercriminals Go for a Scam? Apparently into Outer Space.

Jul 12, 2018 11:08:53 AM By Stu Sjouwerman

The Nigerian Prince scam was found taking a turn upwards to the stars, seeking your help to bring a poor lonely astronaut home.

Do You Have A Millennial Security Awareness Training Gap?

Jul 12, 2018 11:04:51 AM By Stu Sjouwerman

Unlike previous generations, millennials have used (and trusted) technology all their lives. So, does it cause a gap in your organization’s Security Awareness Program?

North Korea Brings Light to a “Cool” Way to Spread Malware

Jul 12, 2018 11:02:27 AM By Stu Sjouwerman

In the midst of all the political talk about the recent summit between the United States and North Korea, one particular gift caught the eye of security experts.

Sextortion Phishing Campaign Uses Recipient's Hacked Passwords

Jul 12, 2018 10:31:33 AM By Stu Sjouwerman

Krebs on Security has posted a new item: "Here's a clever new twist on an old email scam that could serve to make the con far more believable. The message purports to have been sent from ...

[Heads-Up] New Deceptive Strains Of Payroll Phishing: "Because that's where the money is..."

Jul 10, 2018 3:48:50 PM By Stu Sjouwerman

Most readers will probably be familiar with the story of bank robber Willie Sutton who, after being nailed by the cops, was asked why he robbed the bank. His answer (undoubtedly delivered ...

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.

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