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

Snapchat Employee Fell For W-2 Phishing Scam

Feb 29, 2016 3:36:17 PM By Stu Sjouwerman

A Snapchat employee fell for a W-2 phishing scam last week, compromising the identity information of other existing and ex-employees. The FBI calls this a Business Email Compromise, also ...

[ALERT] New Strain Of CEO Fraud: Urgent Request for W-2s

Feb 24, 2016 10:14:27 AM By Stu Sjouwerman

This morning, our Controller received an email from "me", stating the following: Alanna I want you to send me the list of W-2 copy of employees wage and tax statement for 2015, I need ...

CyberheistNews Vol 6 #8 [ALERT] It's Here. New Ransomware Hidden In Infected Word Files

Feb 22, 2016 9:23:22 AM By Stu Sjouwerman

44% of ransomware victims in the UK have paid to recover their data

Feb 20, 2016 11:05:06 AM By Stu Sjouwerman

Danielle Correa at SC Magazine wrote: "A Bitdefender global study with respondents from the UK, the US, France, Germany, Denmark and Romania was conducted by iSense Solutions to discover ...

Scam Of The Week - Netflix For Free

Feb 20, 2016 9:48:50 AM By Stu Sjouwerman

Netflix’s popularity continues to grow fast, and they recently launched their streaming service globally. Obviously that makes them a hacker target. At the moment, there are active ...

It's Here. New Locky Ransomware Hidden In Infected Word Files

Feb 17, 2016 7:44:24 AM By Stu Sjouwerman

[UPDATED FEB 22, 2016] It was only a matter of time, but some miscreant finally did it. There is a new ransomware strain somewhat amateurishly called "Locky", but this is professional ...

CyberheistNews Vol 6 #7 New Surveys: "Users Are #1 Risk And Pain In The Neck"

Feb 16, 2016 9:29:32 AM By Stu Sjouwerman

Ransomware Roundup 2/15/2016

Feb 15, 2016 8:00:42 AM By Stu Sjouwerman

The bad guys have been awfully busy these last few days. Here is your ransomware roundup with the latest "new features".

The KnowBe4 Phish Alert Button Versus JSocket RAT

Feb 14, 2016 11:18:21 AM By Stu Sjouwerman

Since releasing its free PhishAlert button in November 2015, KnowBe4 has been receiving a steady stream of emails flagged by users as potential phishing attacks. The email threats ...

When do end-users click on phishing links?

Feb 14, 2016 10:51:45 AM By Stu Sjouwerman

We had a data scientist take a look at more than 4 years of aggregated clicking data and he came up with some interesting results, expressed in graphs. Here are some of the highlights:

Fresh KnowBe4 2016 Datasheet with new Phish Alert button

Feb 12, 2016 10:30:36 AM By Stu Sjouwerman

We have just published a brand new 2016 datasheet that includes all the main features added over the last 12 months. What I'm highlighting is this exciting free option if you use Outlook ...

Please vote for KnowBe4 at the Cybersecurity Excellence Awards.

Feb 12, 2016 9:54:27 AM By Stu Sjouwerman

Here is a short summary of why we are asking for your vote: Highest growth in customers over all competitive products Most complete suite of anti-phishing tools Easy-to-use, ...

CyberheistNews Vol 6 #6 [ALERT] Ransomware Criminals Infect Thousands With Weird WordPress Hack

Feb 8, 2016 8:59:23 AM By Stu Sjouwerman

American Chamber Of Commerce Scam Is Spear-phishing Prep

Feb 6, 2016 4:07:43 PM By Stu Sjouwerman

You may be aware of Steven Weisman, Esq. He writes a great daily blog called Scamicide, and is a is a nationally recognized identity theft expert, experienced university lecturer, proven ...

Ransomware Criminals Infect Thousands With Weird WordPress Hack

Feb 6, 2016 11:00:13 AM By Stu Sjouwerman

An unexpectedly large number of WordPress websites have been mysteriously compromised and are delivering the TeslaCrypt ransomware to unwitting end-users. Antivirus is not catching this ...

World's Most Famous Hacker Raises $8 Million To Play In Billion Dollar Security Awareness Training Market

Feb 3, 2016 1:46:57 PM By Stu Sjouwerman

Hi Guys, this is too good to miss. Check out this brand new article in Forbes Magazine. They started out with:

CyberheistNews Vol 6 #4 Scam Of The Week: Your Stolen iPhone Has Been Found

Feb 2, 2016 9:23:43 AM By Stu Sjouwerman

FDIC Warns Banks To Beef Up Cyber Security

Feb 1, 2016 4:18:50 PM By Stu Sjouwerman

I found a very interesting article at the ValueWalk site about the FDIC requiring banks to improve their cyber security, they started out with:

This Week's Five Most Popular HackBusters Posts

Jan 31, 2016 10:59:48 AM By Stu Sjouwerman

There is an enormous amount of noise in the security space, so how do you know what people really talk about and think is the most important topic? Well, we created the Hackbusters site ...

This Week's Ransomware Roundup

Jan 31, 2016 9:51:22 AM By Stu Sjouwerman

1) I was going to write up all the ransomware related news and then ran across this article by Senior Editor Sara Peters at Darkreading. Saves me some time! She started out with: ...

Security Awareness Training Blog

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