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

Learning a 120K Lesson the Hard Way

Dec 1, 2018 10:52:26 AM By Stu Sjouwerman

The bank isn’t always responsible for making you whole after a business email compromise. Indiana’s Lake Ridge Schools lost more than $120,000 from a seven-million-dollar construction ...

Attackers Impersonate CEOs to Scam Employees into Sending Gift Cards for the Holidays

Dec 1, 2018 8:07:40 AM By Stu Sjouwerman

A crafty mix of social engineering, great timing, and context act as the perfect ingredients to trick unwitting users into buying gift cards and placing them into the hands of the ...

[Heads-up] Bad Guys Love Marriott: 500 Million Data Breach Is Phishing Heaven

Nov 30, 2018 10:18:39 AM By Stu Sjouwerman

So I guess we have just reached the tipping point, it's "privacy game over" for business travelers.

KnowBe4 Fresh Content Update & New Features November 2018

Nov 29, 2018 5:09:01 PM By Stu Sjouwerman

We've got a few content updates in the KnowBe4 Modstore to share with you for the month of November!

Employers Are Liable If They Don't Protect Employees' Sensitive Personal Information from Attack

Nov 29, 2018 4:56:20 PM By Stu Sjouwerman

A recent ruling from the Pennsylvania Supreme Court on an employee lawsuit against the University of Pittsburgh Medical Center stemming from a data breach should put all employers on ...

DNSpionage Malware Targets Domains in Lebanon and United Arab Emirates

Nov 28, 2018 5:25:02 PM By Stu Sjouwerman

A new threat actor is targeting Lebanon and United Arab Emirates (UAE) government domains, as well as a Lebanese airline company, according to Warren Mercer and Paul Rascagneres at Cisco ...

KnowBe4 Reached A Major 2018 Sales Milestone...

Nov 28, 2018 1:45:27 PM By Stu Sjouwerman

During the lunch hour, we had a plane buzzing our offices downtown Clearwater, check it out... You can click on the picture to see the video,,,

Reduce the Risk of Data Breach by Focusing on Compromised Credentials

Nov 28, 2018 1:37:41 PM By Stu Sjouwerman

The bad guys can’t do anything on your network without access. That’s why they focus their efforts on gathering as many sets of credentials as possible. You should focus there too.

Shadow IT is Alive and Well: One-Third of Employees Deploy Their Own Software

Nov 27, 2018 3:23:09 PM By Stu Sjouwerman

Employees see IT as an “inconvenience” and look for ways to get around security measures, putting the organization at risk, according to SailPoint’s 2018 Market Pulse Survey.

Reminder: That Padlock Doesn’t Mean It’s Secure

Nov 27, 2018 8:05:51 AM By Stu Sjouwerman

We’ve mentioned this before, but the misconception has surfaced again, and it’s worth mentioning again. Looking for the padlock as a sign of a secure legitimate website isn’t an accurate ...

CyberheistNews Vol 8 #47 [Heads-Up] Bad Guys Are Now Taking Over Email Inboxes Without Phishing Attacks

Nov 26, 2018 8:20:23 AM By Stu Sjouwerman

As You Read This, It's Cyber Monday. How To Avoid The Top 10 Security Threats

Nov 24, 2018 11:15:47 AM By Stu Sjouwerman

InfoSecBuzz asked a number of security experts for their advice on the top security threats and how to avoid them. These are specialists from Alienvault, Cylance, Cybereason, F5 Networks, ...

[Heads-up] Bad Guys Are Now Taking Over Email Inboxes Without Phishing Attacks

Nov 24, 2018 8:43:21 AM By Stu Sjouwerman

I found a great article in SecurityWeek by Alastair Paterson, the CEO of Digital Shadows. Could not have said it better myself, and he alerted everyone about an attack vector that was ...

75% of users reuse passwords across different accounts – this is up from 56% in 2014!

Nov 23, 2018 12:00:21 PM By Stu Sjouwerman

We’ve always known users are the weakest link in your security chain, but new report data from SailPoint shows just how bad users are behaving in 2018 – and how it affects security.

KnowBe4 Wins UK Security Excellence Awards!

Nov 22, 2018 2:05:18 PM By Stu Sjouwerman

Computing's Security Excellence Awards celebrate the achievements of the IT industry's leading security companies, solutions, products and personalities - those are keeping every other ...

Do Your Emails Make the Naughty or Nice List?

Nov 21, 2018 3:31:33 PM By Stu Sjouwerman

Black Friday is just as popular with hackers as it is with shoppers. So is Cyber Monday, for that matter.

More Details On New Bill That Poses Jail Time and Fines for Senior Executives of Victim Organizations

Nov 21, 2018 1:50:10 PM By Stu Sjouwerman

We covered this in the recent CyberheistNews, but now there is more detail.

CEOs are Prime Targets for Social Engineering Attacks

Nov 20, 2018 4:46:20 PM By Stu Sjouwerman

CEOs can be the weakest link in an organization’s security posture, according to Mimecast’s Matthew Gardiner. Carole Theriault talked to Gardiner last week on The CyberWire’s Hacking ...

Dutch audit finds Microsoft Office leaks confidential data

Nov 20, 2018 11:32:58 AM By Stu Sjouwerman

The diagnostics Microsoft Office collects from users should be a source of concern for any government CISO, according to a DPIA audit ComputerWeekly reported: "A report commissioned by ...

MSPs: Ransomware Downtime Costs SMBs 10x the Ransom

Nov 20, 2018 10:47:32 AM By Stu Sjouwerman

With 79% of MSPs indicating their clients have experienced ransomware attacks, every organization needs to take the financial impact of ransomware seriously.

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