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

Defending Against Phishing Attacks

Oct 3, 2012 8:11:30 AM By Stu Sjouwerman

By now, we all know that the bad guys are using phishing and spear-phishing to go after your users and penetrate your networks. This type of social engineering attack is getting used more ...

How long should it be?

Sep 29, 2012 4:07:51 AM By Stu Sjouwerman

We asked people which topics they thought were important to protect their family online. They gave us eight major areas that they wanted to learn more about. We are creating a course ...

Scam Of The Week You Have Been Targeted For Assasination

Sep 24, 2012 4:10:30 AM By Stu Sjouwerman

The last few weeks, the Internet Crime Complaint Center (IC3) reported they received complaints about the latest version of 'Hit Man scam' which now tells people via e-mail they have been ...

Ex-Sunbelter Joins ex-Hacker Mitnick in Anti-Hacker Training

Sep 20, 2012 3:47:30 AM By Stu Sjouwerman

Doug Barney, Editor in Chief of Redmond Magazine did a write-up about our new Kevin Mitnick Security Awareness Training, which was pretty fun. You can read his blog post here

Beware Of iPhone Delivery Phishes

Sep 19, 2012 9:59:22 AM By Stu Sjouwerman

Hackers have a great new reason to send you a UPS notification regarding your new iPhone 5 shipment. In times like this when people are eagerly waiting for an email of this type the ...

I was quoted on CNNMoney re mobile security

Sep 17, 2012 4:29:55 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="230" caption="Mobile Security"][/caption] NEW YORK (CNNMoney) -- Security experts have warned for years that our smartphones are due for a major ...

1-Minute-Internet-Security-Survey

Sep 15, 2012 9:13:33 AM By Stu Sjouwerman

Could you do us a big favor? Spend one minute! We asked people which things they thought were important for Internet Security at the house. In other words, what they thought was needed to ...

5 BYOD Deployment Rules

Sep 14, 2012 6:33:27 AM By Stu Sjouwerman

(1) To start off with, have a BYOD project leader that has the authority to enforce the required policies, procedures, and training to get BYOD implemented securely.

How I Bought 1,000 Twitter Followers

Sep 9, 2012 3:57:54 AM By Stu Sjouwerman

September 9, 2012 -- I have been a fan of Mike Elgan for years. He's often able to put his finger on the sore spot and boy this spot hurts for some people! He lists a new class of ...

KnowBe4 CEO TV Interview on being an Entrepreneur in Tampa Bay

Sep 5, 2012 7:30:42 AM By Stu Sjouwerman

KnowBe4 CEO TV Interview on being an Entrepreneur in Tampa Bay I was interviewed as a panel member at the Front Row Tampa Bay event during the 2012 RNC in Tampa, FL about the benefits of ...

Fake AmEx "Security Verification"

Sep 4, 2012 3:13:02 AM By Stu Sjouwerman

* Scam Of The Week: Fake AmEx "Security Verification" Phishing attacks come in waves. Old ones get "refurbished" and sent out again after several months. Shiny new ones are cooked up all ...

IT's 9 Biggest Security Threats

Aug 28, 2012 4:21:21 AM By Stu Sjouwerman

[caption id="" align="aligncenter" width="250" caption="9 Biggest Security Threats"][/caption] By now you probably know I am a fan of Roger Grimes. He's a highly skillled security veteran ...

What is wrong with this picture?

Aug 24, 2012 9:33:14 AM By Stu Sjouwerman

[caption id="" align="aligncenter" width="500" caption="What is wrong with this picture?"][/caption] This picture is a screen shot from the Polish TV Channel TVP. See something that ...

Scam Alert: Naked Prince Harry Pictures

Aug 24, 2012 4:49:45 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="175" caption="Scam Alert: Naked Prince Harry Pictures"][/caption] Wath out for the latest Internet craze. The bad guys are having a field day with ...

Top hacker details how to avoid cybercrime

Aug 20, 2012 7:16:22 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="300" caption="(Flickr user Alan Cleaver)"][/caption] (MoneyWatch) With the National Republican Convention fast approaching at the end of August, ...

Special Scam Of The Week: Big Brand Hijacking

Aug 17, 2012 10:16:31 AM By Stu Sjouwerman

An existing KnowBe4 customer tweeted about a fresh scam with the hashtag #RedFlag, and sure enough it had quite a few Red Flags. The bad guys are getting quite inventive, this time ...

30 percent of corporate users are infected with malware every year

Aug 17, 2012 4:25:33 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="220" caption="30% Users Infected Per Year"][/caption] According to Radicati Group, 30 percent of corporate users are infected with malware every ...

Interview on RNC Cyber Crime - Stu Sjouwerman on Tampa CBS - WTSP

Aug 14, 2012 9:35:14 AM By Stu Sjouwerman

http://www.youtube.com/watch?v=dultIFSgQS0&feature;=youtu.be This week, (very very early) Monday morning I was interviewed at the local Tampa CBS affiliate WTSP. We are getting the ...

Apple social engineered - Allows access to iCloud

Aug 5, 2012 8:56:17 AM By Stu Sjouwerman

[caption id="" align="alignleft" width="300" caption="Apple Tech Social Engineered"][/caption] [UPDATED August 7] Former Gizmodo reporter Mat Honan was hacked hard. He found out that an ...

More Than Half Of Top 20 Fortune 500 Firms Infected With Gameover Zeus Botnet

Aug 3, 2012 9:00:59 AM By Stu Sjouwerman

The Gameover Zeus botnet is now the biggest financial fraud botnet around, and it's run by a single cybercrime group out of Eastern Europe, according to new research. Brett Stone-Gross, ...

Security Awareness Training Blog

View Topics