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

Spam Remains the Criminals' Favorite Online Tool

Aug 1, 2018 11:20:00 AM By Stu Sjouwerman

Spam is forty years old, and it's still the enduring favorite of cyber criminals. What's reckoned to have been the first spam was distributed in 1978 over ARPANET. ARPANET would evolve ...

UK Insurer Beazley: "Phishing attacks up in second quarter."

Aug 1, 2018 6:07:00 AM By Stu Sjouwerman

Attacks that target business email accounts continued to increase in the second quarter of 2018, accounting for 23% of incidents reported to Beazley P.L.C. clients, the insurer said ...

You Can’t Afford a Data Breach – And They’re Only Getting More Expensive

Jul 31, 2018 12:25:35 PM By Stu Sjouwerman

Like everything else in this world, data breaches are costing organizations more too.

Breach You Once? Shame on You. Breach You Twice? Still.. Shame on You.

Jul 31, 2018 12:20:27 PM By Stu Sjouwerman

Heed the warning found in the story of a Virginia bank that was not breached once, but twice in an 8-month period of time!

No "Shame on You" When it Comes to Cybersecurity Testing

Jul 31, 2018 10:14:21 AM By Stu Sjouwerman

Employee testing is a necessary part of a well-executed and flexible security awareness program. For testing to be effective, however, it needs to be well thought-out, making an ...

Snail-Mail Phishing with a CD as Bait

Jul 30, 2018 4:37:59 PM By Stu Sjouwerman

Several state government offices in the US have received CDs by mail, infected with malware. It's a clumsy attempt, according to an alert the Multi-State Information Sharing and Analysis ...

KnowBe4 Fresh Content Update & New Features July 2018

Jul 30, 2018 11:30:00 AM By Stu Sjouwerman

Check out the new features and training content in the KnowBe4 platform for July!

CyberheistNews Vol 8 #30 [Heads-up] WSJ: "Russian Hackers Are Now Able to Turn Off Your Lights"

Jul 30, 2018 9:39:33 AM By Stu Sjouwerman

Gmail's Problematic Confidential Mode

Jul 28, 2018 10:04:43 AM By Stu Sjouwerman

Some technical security measures may seem to promise more security than they actually deliver. It's good to understand their limitations, and to make employees aware of those same ...

Why Don’t Your Employees Care About Cyber Security?

Jul 27, 2018 4:14:29 PM By Stu Sjouwerman

Whether you realize or not, your employees are a critical part of your layered defense against phishing attacks, malware, ransomware, and more. So why aren’t they concerned?

Why Using Brands Is An Essential Element Of Phishing Simulations

Jul 27, 2018 7:41:48 AM By Stu Sjouwerman

It's clear to everyone that company's brand is a valuable property. Often hundreds of millions of dollars were used to create the brand over decades. It creates instant recognition and ...

Emotet Phishing Epidemic: Infections Costing Orgs Up to $1 Million Per Incident

Jul 26, 2018 3:51:23 PM By Stu Sjouwerman

US-CERT alert sounds the alarm on Emotet, one of the most costly and destructive malware strains currently active.

Hostage crisis? Ransomware is a threat that demands disaster planning

Jul 26, 2018 2:01:35 PM By Stu Sjouwerman

According to new research from Marshall University on considering the growing threat of ransomware in healthcare, organizations need to plan for the day their data become hostages.

Beware of Free Gift Card Phishing Scams

Jul 26, 2018 1:40:54 PM By Stu Sjouwerman

People can’t resist the lure of free stuff. Cyber criminals know this and are always looking for ways to make a quick effortless buck. Put these two together and you have the perfect ...

Think Your Organization Can’t Get Infested with RATs? Think Again.

Jul 26, 2018 11:43:59 AM By Stu Sjouwerman

The recent arrest of 21-year old software developer Colton Grubbs brings light to just how easy it is for wanna-be cybercriminals to get their hands on some pretty powerful malware tools.

Cybersecurity is the IT area where most CIOs expect to boost spending

Jul 25, 2018 2:22:28 PM By Stu Sjouwerman

MarketWatch reports that cybersecurity companies appear to be benefiting from fat IT spending budgets fueled by tax cuts and fears of hackers. A recent Morgan Stanley survey found that ...

Fake Hotel Website Scams Target Travelers and Hotels

Jul 25, 2018 1:24:57 PM By Stu Sjouwerman

Cybercriminals will take advantage of any situation that separates people from their money. And what better way than to purport to be a reputable hotel and take reservations?

Is it Shark Week at your Organization?

Jul 24, 2018 3:20:54 PM By Stu Sjouwerman

Curiosity for one of the most aggressive and dangerous beasts in the ocean has us dedicating a week to learning about it. Should cyberattacks that put your organization at risk get equal ...

Second Quarter 2018 Top-Clicked Phishing Email Subjects [INFOGRAPHIC]

Jul 24, 2018 1:52:43 PM By Stu Sjouwerman

We've been reporting on the top-clicked phishing email subjects every quarter for a while now across three different categories: general emails, those related to social media, and 'in the ...

WSJ: "Russian Hackers Reach U.S. Power Utility Control Rooms"

Jul 24, 2018 8:23:25 AM By Stu Sjouwerman

Now here is some news that concerns me deeply. I knew it was bad, but I did not know it was this bad.

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