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

Kevin Mitnick at Black Hat 2014

Aug 9, 2014 11:29:00 AM By Stu Sjouwerman

I was at Black Hat 2014, and Kevin Mitnick was also at at the show. He signed 700 books in a 3-hour span, whew! Here is the line that ran all the way back to the show floor. I took this ...

Scam Of The Week: "For Sale: CyberVor False Sense Of Security"

Aug 9, 2014 10:30:00 AM By Stu Sjouwerman

Are the credentials of one of your users among the stash of the 1.2 billion stolen passwords? A small Internet security company will tell you for just a 120 bucks per year. Their ...

CyberheistNews Vol 4, # 31 Second Generation Ransomware In The Wild

Aug 5, 2014 9:40:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 31

Cryptolocker Ransomware Variant Hits Synology Users: Synolocker

Aug 4, 2014 10:02:00 AM By Stu Sjouwerman

When your products get targeted with custom made ransomware, you know you've got it made. We're talking about NAS (network-attached storage) built by Synology in Taiwan. the malware has ...

The Internet of Things, Risks Of Hooking Up Appliances

Aug 2, 2014 10:00:00 AM By Stu Sjouwerman

This is a (very) short sci-fi story that looks at the cyber security risks of hooking up household appliances to the Internet. Warning - this is one grumpy man.

Security Awareness Training blocked Ransomware Infection

Aug 1, 2014 11:48:00 AM By Stu Sjouwerman

ComputerWorld in Australia reported on a very nice success where security awareness training prevented a major ransomware infection. They started out with: "People like to ask the ...

CryptoLocker copycat Cryptoblocker encrypts differently

Aug 1, 2014 11:31:00 AM By Stu Sjouwerman

Is Antivirus as Vulnerable as Any Other Product?

Jul 29, 2014 6:05:00 PM By Stu Sjouwerman

Joxean Koret, a security researcher from the Singapore-based Coseinc, using a "fuzzer" tool he built himself, found numerous remotely exploitable vulnerabilities in multiple antivirus ...

CyberheistNews Vol 4, 30 DELL Warns Against Social Engineering

Jul 29, 2014 9:47:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 30

KnowBe4 is hiring people for our sales team in Tampa Bay FL

Jul 28, 2014 5:03:00 PM By Stu Sjouwerman

KnowBe4 will pay anyone a thousand bucks for a referral that gets us a good sales rep!

Heads-Up: Second Generation Ransomware In The Wild

Jul 28, 2014 1:46:00 PM By Stu Sjouwerman

Last week, Fedor Sinitisyn, blogger and security researcher for Kaspersky posted something worrisome. He reported that the Angler Exploit Kit was delivering a new second-generation type ...

DELL Warns Against Social Engineering

Jul 26, 2014 9:24:00 AM By Stu Sjouwerman

Dell has its own news site called Tech Page One. A few days ago they had a new article that started with: "Human errors that aid social engineers. The weakest links in computer networks ...

CyberheistNews Vol 4, # 29 Scam Of The Week: MH17 Airplane Crash

Jul 22, 2014 9:56:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 29

Scam Of The Week: MH17 Airplane Crash

Jul 22, 2014 7:24:00 AM By Stu Sjouwerman

Almost 300 people get shot out of the air and the only thing cyber-criminals can think of is how to exploit the disaster. What else is new. Disgusting.

Phishing Scam Of The Week: "Transportation Manager"

Jul 20, 2014 4:14:00 PM By Stu Sjouwerman

Unscrupulous eastern European cyber mafias are preying on U.S. workers that try to make ends meet and look for a second (or third) job. This is not a new scam, but it is sticking up its ...

Cryptolocker Is Not Dead

Jul 17, 2014 1:58:00 PM By Stu Sjouwerman

Tyler Moffitt, Threat Team Member at Webroot wrote:

ALERT: Ransomware Infection = Official Data Breach

Jul 16, 2014 4:28:00 PM By Stu Sjouwerman

This is one of the rare Cyberheist NewsFlash issues that we send when we run into something important enough to alert you about right away. Please forward to your friends and colleagues.

Brokerage house Gets Hit With CryptoWall Ransomware

Jul 15, 2014 3:56:00 PM By Stu Sjouwerman

The brokerage house, Benjamin F. Edwards & Co., announced this week that they had suffered a data breach. May 24, 2014 they had their computer systems compromised by an unauthorized ...

CyberheistNews Vol 4, # 28 Five Travel Scams Of The Week

Jul 15, 2014 9:25:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 28

Five Travel Scams Of The Week

Jul 14, 2014 12:33:00 PM By Stu Sjouwerman

It's summer and a lot of people are on the road, but some of your employees are always traveling for business, and often these are management-level people with access to lots of ...

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