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

Cybercrime could cost companies trillions over the next five years

Jan 21, 2019 10:26:59 AM By Stu Sjouwerman

A new report (PDF) by Accenture indicates that over the next 5 years, cyberattacks could result in global costs totaling $5.2 trillion.

CyberheistNews Vol 9 #4 It Only Takes 1 Phish: Wichita State University Employees Get Fooled Into Losing Their Paychecks

Jan 21, 2019 9:48:28 AM By Stu Sjouwerman

The internet's 'father' says it was born with two big flaws

Jan 20, 2019 5:37:23 PM By Stu Sjouwerman

BusinessInsider just posted an article that confirms something I have been saying for years. There is some contrary data though. We may be looking at a light version of rewriting history. ...

"Ransomware Humor" Two Words You Thought You Would Never See Together

Jan 18, 2019 4:41:24 PM By Stu Sjouwerman

Someone's got a warped sense of humor. See the spoofed ransomware email below:

[VIDEO] KnowBe4 Quarterly Platform Update

Jan 18, 2019 4:28:40 PM By Stu Sjouwerman

Every quarter, the KnowBe4 Technical Content team creates an update of all the new content and features that have been added the last three months. Here is the Jan 2019 issue, which ...

Proposed N.C. Bill Would Require Ransomware Disclosures

Jan 18, 2019 3:34:18 PM By Stu Sjouwerman

North Carolina Attorney General Josh Stein released a report on Thursday that highlights the impact of data breaches on the state in 2018, and paired the report with a bipartisan bill to ...

Ransomware Attack Makes Government Offices in Del Rio, Texas Resort to Pen and Paper

Jan 18, 2019 11:35:57 AM By Stu Sjouwerman

This latest ransomware attack demonstrates how an entire network can be taken down, bringing operations to a screeching halt.

BenefitMall Hit by Months-Long Data Breach

Jan 17, 2019 2:47:11 PM By Stu Sjouwerman

The Dallas-based payroll firm BenefitMall announced on January 4 that nearly 112,000 customers may have had their personal information exposed during a four-month long data breach. The ...

The U.S. Government Blaming Cyber Attacks on Russia May Cost One Business $100 Million

Jan 17, 2019 2:02:47 PM By Stu Sjouwerman

Governments attributing cyberattacks to specific countries usually ends in nothing more than a line in a news story. But sometimes these kinds of claims can have unforeseen consequences.

[Heads-up] Are Any Of Your Users Exposed In This Brand New Humongous Data Breach?

Jan 16, 2019 5:59:32 PM By Stu Sjouwerman

Troy Hunt, the site admin of Have I Been Pwned just released some disconcerting news. A new data breach of humongous proportions has just been made public, we are talking astronomical ...

What Does KnowBe4 Think About Link Re-writing?

Jan 16, 2019 5:11:32 PM By Stu Sjouwerman

This is a question that was asked by a customer who was implementing our Phish Alert Button so that employees could report phishy emails.

Modern Ransomware Goes After Data Backups

Jan 16, 2019 4:07:20 PM By Stu Sjouwerman

Ransomware is using a variety of methods to reduce or nullify the effectiveness of data backups, writes Maria Korolov at CSO. Restoring from a backup is one of the best strategies that ...

The Top 10 Big Risk Picture From Way High Up

Jan 16, 2019 2:34:18 PM By Stu Sjouwerman

What keeps you up at night? These are the biggest risks facing our world in 2019. Top world leaders were surveyed for the latest edition of the World Economic Forum's Global Risks Report. ...

Increase in Office 365 Attacks and Data Breaches Should Be Expected as We Approach the 2019 Tax Season

Jan 16, 2019 10:20:47 AM By Stu Sjouwerman

Experts warn of uptick in phishing attacks against businesses leveraging Office 365 as the tax season begins, tensions run high, and opportunities to trick off-guard users will be plenty.

[THIS IS NOT A DRILL] KB4 Training Template Used As Phishing In The Wild

Jan 15, 2019 3:20:43 PM By Stu Sjouwerman

It's a known fact that once your market share is big enough, the bad guys are going after you. Used to be that viruses and malware were only developed for Windows, but when Apple got to ...

Brand-New Tool: Password Exposure Test Identifies Risky Users

Jan 15, 2019 9:29:06 AM By Stu Sjouwerman

Cybercriminals are constantly coming out with new ways to hack into your network and steal your organization’s confidential information. According to the 2018 Verizon Data Breach Report, ...

CyberheistNews Vol 9 #3 Your Boss NEEDS to Read This WSJ Article About Our Power Grid and How the Russians Hacked it With Phishing

Jan 15, 2019 9:09:57 AM By Stu Sjouwerman

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