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

Two New Cybercrime-as-a-Service Platforms Discovered

Jul 15, 2017 9:13:27 AM By Stu Sjouwerman

There is a rising trend of cybercrime sites for wannabe "crims" that make malicious hacking a point-and-click exercise. A new report describes two more sites that were discovered by ...

Second Quarter 2017 Top-Clicked Phishing Email Subjects [INFOGRAPHIC]

Jul 14, 2017 5:33:06 PM By Stu Sjouwerman

KnowBe4 customers run millions of phishing tests per year, and we report at least quarterly on the latest top-clicked phishing email subjects so our customers know what the highest-risk ...

CyberheistNews Vol 7 #27 Scam of the Week: Phishing Moves to Smishing / and More News

Jul 10, 2017 9:25:34 AM By Stu Sjouwerman

Cleveland Medical Associates Ransomware Infection Caused 22K-Record Databreach - How To Prevent This

Jul 8, 2017 5:25:58 PM By Stu Sjouwerman

Cleveland Medical Associates is offering about 22,000 patients identity protection services after a ransomware attack against the practice. The practice is offering a year of protective ...

Scam Of The Week: Phishing Moves To Smishing

Jul 8, 2017 10:14:18 AM By Stu Sjouwerman

Cybercriminals are increasingly trying to circumvent your spam filters and instead are targeting your users directly through their smartphone with smishing attacks, which are hard to ...

UN Report Shows the Whole World Needs a Cybersecurity Upgrade. Oh, Really...

Jul 7, 2017 5:29:31 PM By Stu Sjouwerman

Joseph Steinberg at Inc. Mag wrote : "A UN report released this week shows that despite global awareness of the proliferation of cybercrime and cyber-spying, many nations - including some ...

Russians Are Suspects in Phishing Attacks Involving U.S. Nuclear Site

Jul 7, 2017 4:53:42 PM By Stu Sjouwerman

A report from the FBI and the US Department of Homeland Security warns of malware attacks targeting mainly nuclear power stations, and energy facilities. The attacks started May this ...

New Dark Web Site Offers Automated Social Engineering-As-A-Service

Jul 5, 2017 10:47:22 AM By Stu Sjouwerman

This Site Creates Robocalls to Steal People’s Credit Card PINs A June 30, 2017 post on Motherboard revealed a V1.0 of a site that does automated social engineering as a service, and has ...

KnowBe4 Makes It In The 18 Hottest Enterprise Startups Of 2017

Jul 5, 2017 9:50:07 AM By Stu Sjouwerman

Business Insider wrote: "We are half-way through 2017 and it's time to take stock of the hottest startups so far this year. For that we turned to Pitchbook, the website that tracks ...

KnowBe4 Reports Record Q2 2017 Performance

Jul 2, 2017 10:30:49 AM By Stu Sjouwerman

I am happy to report that the second quarter of 2017 was well over double that of Q2 last year, sales (bookings) was 232% compared to a year ago. This marks our 17th-straight quarter of ...

NotPetya "ransomware" Froze Business At Global Law Firm DLA Piper

Jun 30, 2017 8:57:03 AM By Stu Sjouwerman

Kate Fazzini and Adam Janofsky at the Wall Street Journal wrote an excellent piece about the dangers of becoming collateral in global cyber warfare. They wrote: "This week’s “Petya” ...

[ALERT] NotPetya Is a Cyber Weapon, Not Ransomware

Jun 29, 2017 7:18:16 AM By Stu Sjouwerman

Yesterday morning, after monitoring this new outbreak for 24 hours, I came to the conclusion we were dealing with cyber warfare , and not ransomware . Two separate reports coming from ...

We Are Dealing With Cyber Warfare Here

Jun 28, 2017 6:57:59 AM By Stu Sjouwerman

OK, after 24 hours of monitoring this new Petya ransomworm outbreak, I am calling it. This has been brewing under the surface for a few years, but now we are dealing with open cyber ...

APWG Cybercrime Report: Phishers’ Command of Domain Name System Reaches All-Time High in 2016

Jun 27, 2017 1:21:07 PM By Stu Sjouwerman

Criminalization of DNS for Phishing Advanced Most Every Year Since 2012 CAMBRIDGE, Mass.-- The APWG's latest study has found that cybercriminals have been shifting their tactics markedly, ...

[ALERT] Looks Like A New Worldwide Ransomware Outbreak

Jun 27, 2017 10:55:25 AM By Stu Sjouwerman

Motherboard reported: "A quickly-spreading, world-wide ransomware outbreak has reportedly hit targets in Spain, France, Ukraine, Russia, and other countries. This strain is deadlier than ...

CyberheistNews Vol 7 #26 [HEADS UP] Ransomware Now Hits Linux - Web Hosting Provider Pays a Million

Jun 26, 2017 9:43:56 AM By Stu Sjouwerman

Scam Of The Week: Real Estate Wire Transfer Phishing Fraud

Jun 25, 2017 12:37:42 PM By Stu Sjouwerman

According to the NY Daily News, State Supreme Court Justice Lori Sattler was in the process of selling her apartment and buying another, when she received an email that seemed like it was ...

Security Awareness Training Can Lower Your Cyberinsurance Premium

Jun 25, 2017 10:15:33 AM By Stu Sjouwerman

New-school security awareness training might even pay for itself from Day 1! How? Call your cybersecurity insurance carrier or agent and specifically ask if you get a discount on the ...

Windows 10 Stops Ransomware Cold? Not So Fast!

Jun 25, 2017 8:46:11 AM By Stu Sjouwerman

Recently, Microsoft claimed that no known ransomware could penetrate the new Win10 Creators Update.

Global Cyber Alliance: "Few U.S. Hospitals Secure Their Email Against Phishing"

Jun 24, 2017 12:08:12 PM By Stu Sjouwerman

Shaun Waterman at the quite useful CyberScoop site wrote: "Fewer than one-third of the largest 98 public and private hospitals in the United States secure their email against phishing and ...

Security Awareness Training Blog

View Topics