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

2015 U.S Hacking Incidents More Than Previous Two Years Combined

Sep 12, 2015 10:04:00 AM By Stu Sjouwerman

In 2015 U.S. organizations are seeing a significant spike in hacking incidents. Over 122 Million records breached just from hacking alone. That is not counting all of the other incidents ...

[INFOGRAPHIC] Security of The Internet of Things (IoT)

Sep 12, 2015 9:40:00 AM By Stu Sjouwerman

The Internet of Things is far from secure. Don't trust me, just check the FBI, they are getting worried about this too. I have talked about hacks of Internet enabled devices before, ...

Three Big Ransomware Campaigns Victimize Tens Of Thousands

Sep 8, 2015 11:44:00 AM By Stu Sjouwerman

Cybercrime has not given up on ransomware just yet. In fact, it's expanding as different Eastern European mafias are competing with each other for market share in this segment. Here are ...

CyberheistNews Vol #5 #38 Scam Of The Week: Drowned Syrian Boy

Sep 8, 2015 9:15:26 AM By Stu Sjouwerman

CyberheistNews Vol #5 #38 Sept 1, 2015 Scam Of The Week: Drowned Syrian Boy Lowlifes are exploiting the recent picture of three-year-old Syrian boy Alyan Kurdi. He drowned while ...

A Cyberheist Subscriber's Own Hacking Horror Story

Sep 6, 2015 9:32:00 AM By Stu Sjouwerman

Here is a cyberheist subscriber who sent me their own hacking horror story. "Stu, thought I’d give you one. You can use it if you want. Just make it anonymous. So, being in IT we think we ...

Social Engineering Heaven: Combine AshMad Hack With OPM Data

Sep 5, 2015 10:52:00 AM By Stu Sjouwerman

The Office of Personnel Management has just closed a 133 million dollar contract to protect 21.5 million OPM data breach victims for three years. Wow, "Barn, Horse" anyone? This is an ...

KnowBe4 Grand Opening Sept 2015

Sep 3, 2015 2:56:00 PM By Stu Sjouwerman

September 3rd, 2015 - KnowBe4 had the grand opening of our new facility in Tampa Bay, Florida. The 15,000 square foot top floor has a wrap-around 360 panoramic view of the Gulf of Mexico ...

CyberheistNews Vol #5 #37 Scam Of The Week: Business Email Compromise

Sep 1, 2015 9:37:52 AM By Stu Sjouwerman

CyberheistNews Vol 5 #37 Sept 1, 2015 Scam Of The Week: Business Email Compromise Last week, the FBI via their Internet Crime Complaint Center announced some astounding numbers, worse ...

Report: Phishing costs average organization $3.7 million per year

Aug 29, 2015 12:14:00 PM By Stu Sjouwerman

If you extrapolate the total annual cost of phishing for the average organization it comes to more than $3.7 million. You could shave that down by $1.8 million though, with the right ...

IBM: Corporations could be the next target for ransomware attacks

Aug 29, 2015 10:53:00 AM By Stu Sjouwerman

Doug Olenick at SC Magazine reported on something noteworthy: "The growing threat posed by ransomware and the possibility that cybercriminals will graduate from extorting end users to ...

What Is Worse Than Ransomware? Business Email Compromise

Aug 28, 2015 9:31:00 AM By Stu Sjouwerman

You are getting your Scam Of The Week early. Yesterday, the FBI via their Internet Crime Complaint Center announced some shocking numbers. There is a 270 percent spike in victims and cash ...

CyberheistNews Vol 5 #36 Breaking News: Got Hacked...The FTC Can Now Sue You

Aug 25, 2015 9:31:30 AM By Stu Sjouwerman

CyberheistNews Vol #5 #36 Aug 25, 2015 Breaking News: Got Hacked...The FTC Can Now Sue You For organizations that get hacked like Anthem, Target and recently Ashley Madison, the problems ...

Breaking News: Got Hacked? The FTC Can Now Sue You

Aug 25, 2015 7:50:00 AM By Stu Sjouwerman

For organizations that get hacked like Anthem, Target and recently Ashley Madison, the problems are only starting. Apart from towering legal fees and a damaged reputation, now an appeals ...

Stop The AshMad Insanity!

Aug 22, 2015 10:24:00 AM By Stu Sjouwerman

First a 10Gig dump with the full Ashley Madison database. Then a 20Gig dump with their whole Github repository, and then to top it all off a 300G(!) dump. In an interview with Motherboard ...

Phishing Alert: Warn Your Users Against Ashley Madison Scams Now

Aug 20, 2015 10:30:00 AM By Stu Sjouwerman

Your end-users saw this in the news yesterday, or will read about it today. The hackers who stole more than 36 million records from the Ashley Madison site (which makes it easy to cheat ...

Off With Their Heads! Execs get the ax for data breaches

Aug 19, 2015 5:28:00 PM By Stu Sjouwerman

Until last year, executives were able to pass the buck to IT in case a data breach hit the organization. However, several recent high-profile resignations are now putting the focus on ...

CyberheistNews Vol 5 #34 Scam Of The Week: Massive WebAd Poisoning

Aug 18, 2015 9:17:21 AM By Stu Sjouwerman

CyberheistNews Vol 5 #34 Aug 18, 2015 Scam Of The Week: Massive WebAd Poisoning The same cybercrime lowlifes that infected the Yahoo website a few weeks ago have struck again, this time ...

Scam Of The Week: Massive WebAd Poisoning

Aug 16, 2015 10:39:00 AM By Stu Sjouwerman

The same cybercrime lowlifes that infected the Yahoo website a few weeks ago have struck again, this time infecting sites like Drudge Report and Weather.com. Both sites have hundreds of ...

IT Confessions: The Deadly Six Sins Of Data Security

Aug 15, 2015 10:26:00 AM By Stu Sjouwerman

Massive hacks continue to fill the front page of major media outlets. The recent hack of the Federal Office of Personnel Management (OPM) by Chinese state-sponsored hackers again showed ...

CyberheistNews Vol 5 #32 Massive 46M Dollar Cyberheist / Pentagon Spear-phished / BlackHat Hot & Scary

Aug 11, 2015 8:37:59 AM By Stu Sjouwerman

CyberheistNews Vol 5 #32 Aug 11, 2015 Massive 46M Dollar Cyberheist / Pentagon Spear-phished / BlackHat Hot & Scary Brian Krebs just reported on a massive 46M dollar Cyberheist. Tech ...

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