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

The Snappening - Snapchat naked selfies have leaked - but how?

Oct 14, 2014 2:32:00 PM By Stu Sjouwerman

Snapchat is supposed to not keep pictures and basically delete ("self-destruct") any pictures automatically. The ghostly cloud service itself was not hacked, but many megabytes of saved ...

I was just interviewed on TV about the JP Morgan Hack

Oct 14, 2014 10:35:00 AM By Stu Sjouwerman

Tampa TV station 10News WTSP interviewed me about the JP Morgan Hack. You can see the short clip here:

CyberheistNews Vol 4, 41 Scam of the Week: "Whatsapp Gold" & Security News Roundup

Oct 14, 2014 9:34:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 41

Why All This Russian Cybercrime in Five Minutes

Oct 9, 2014 6:04:00 AM By Stu Sjouwerman

We all know that a large amount of cybercrime originates in Russia and other eastern European countries that were former USSR states. But why is that? I decided to dig into this and did ...

CyberheistNews Vol 4, # 40 Most Dangerous Cyber Celebrity of 2014?

Oct 7, 2014 9:39:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 40

CryptoWall 2.0 Ransomware Moves to TOR network

Oct 6, 2014 7:22:00 AM By Stu Sjouwerman

A new version of the world's most widespread ransomware CryptoWall has migrated to the TOR network. It has been upgraded to version 2.0, and continues to encrypt files so that ransom can ...

Poll: Employees Clueless About Social Engineering

Oct 2, 2014 2:20:00 PM By Stu Sjouwerman

Fresh from Dark reading: "When it comes to social engineering, Pogo, the central character of a long-running American comic strip, said it best. "We have met the enemy and he is us."

Who Is The Most Dangerous Cyber Celebrity of 2014?

Oct 2, 2014 10:01:00 AM By Stu Sjouwerman

No, it's not who you think. In recent year it was always a female celebrity like Emma Watson, Heidi Klum or Cameron Diaz that lured web surfers to sites laced with malware. At the end of ...

Latest Anti Phishing Working Group Report

Oct 1, 2014 1:51:00 PM By Stu Sjouwerman

The latest APWG report came out: "Phishers are criminal, but they do make rational decisions about how to go about their work. They’re in it for the money, and they work to make their ...

Top 5 eLearning Statistics for 2014 [Infographic]

Sep 30, 2014 4:48:00 PM By Stu Sjouwerman

The rise in eLearning’s popularity isn’t showing any signs of slowing. In fact, judging by the following Top 10 eLearning statistics for 2014, the future of the eLearning Industry is ...

CyberheistNews Vol 4, # 39 Home Depot Hack Turns Into Criminal Negligence Scandal

Sep 30, 2014 9:58:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 39

Kevin Mitnick Selling 0-day Exploits Is A Good Idea

Sep 29, 2014 1:03:00 PM By Stu Sjouwerman

OK, so here is my take on the recent hatchet job by WIRED Magazine.

Home Depot Hack Turns Into Criminal Negligence Scandal

Sep 29, 2014 8:58:00 AM By Stu Sjouwerman

Wait for the class-actions lawsuits to get unleashed. The lawyers are going to be over this one like white on rice. Ex-employees from the Home Depot IT technology group are now claiming ...

CyberheistNews Vol 4, # 38 Home Depot Target Breaches Exploited Old WinXP

Sep 23, 2014 9:23:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 38

New Android Ransomware Strain Locks The Device Twice

Sep 22, 2014 3:07:00 PM By Stu Sjouwerman

Researchers in Russia discovered a new Android ransomware strain which does not lock the device just once but twice. It spreads by using a social engineering trick, disguising itself as a ...

Home Depot, Target Breaches Exploited Old WinXP Flaw

Sep 20, 2014 2:12:00 PM By Stu Sjouwerman

The massive security breaches and theft of credit card information at The Home Depot and Target have something in common. They were both allowed by a vulnerability in XP embedded that was ...

Regular Facebook Users Are More Likely To Fall For Phishing Scams

Sep 19, 2014 3:32:00 PM By Stu Sjouwerman

Techcrunch was the first one to report on some very interesting findings:

New KnowBe4 Whitepaper: A Short History of Ransomware

Sep 18, 2014 5:57:00 PM By Stu Sjouwerman

CyberheistNews Vol 4, # 37 Symantec: Crypto Ransomware Phishing Up 700 Percent in 2014

Sep 16, 2014 10:08:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 37

Home Depot Hit By Same Russian Hackers As Target

Sep 13, 2014 3:29:00 PM By Stu Sjouwerman

Right after the Target Hack, C-level execs at Home Depot Inc. put together a task force to prevent being the victim of a similar attack. The task force recommended to fully encrypt ...

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