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

Scam Of The Week: Tech Support Exploits WannaCry Ransomware Fears

May 29, 2017 9:53:10 AM By Stu Sjouwerman

We all know about the infamous WannaCry ransomworm which caused a worldwide 1 billion dollars in damage, targeting mainly un-patched Windows 7 machines. As expected, the bad guys are now ...

Symantec: "Email Becomes the Weapon of Choice"

May 29, 2017 8:37:05 AM By Stu Sjouwerman

Symantec's 2017 Internet Security Threat Report (ISTR) details how simple tactics and innovative cyber criminals led to unprecedented outcomes in global threat activity. This report ...

[Heads-Up] Cyber Insurance Does Not Pay Out For Human Error

May 29, 2017 7:57:36 AM By Stu Sjouwerman

The WanaCry ransomworm has caused insurance companies really to take notice. Customers have started to file damage claims, it is a bit early however to see the insurance industry's full ...

Kevin Mitnick And I Did The Cyber Investing Summit Keynote At The NYSE

May 24, 2017 4:50:53 PM By Stu Sjouwerman

The Second Annual Cyber Investing Summit met yesterday at the New York Stock Exchange, and Kevin and I did the keynote, the first time in 5 years that we made it on stage together, which ...

CyberheistNews Vol 7 #21 Scam of the Week: Massive DocuSign Phishing Attacks

May 22, 2017 9:52:27 AM By Stu Sjouwerman

Exclusive: North Korea's Unit 180, the cyber warfare cell that worries the West

May 21, 2017 12:18:54 PM By Stu Sjouwerman

Ju-min Park and James Pearson from Reuters wrote a remarkable piece that you need to know about. They wrote: "North Korea's main spy agency has a special cell called Unit 180 that is ...

The New Ransom Target: Entertainment Files. Who Is The Next Phishing Victim?

May 21, 2017 7:18:35 AM By Stu Sjouwerman

Remember the James Bond movie Goldfinger? It was based on Ian Fleming's seventh novel, which first featured the timeless quote: "Once is happenstance, twice is coincidence, the third time ...

Scam Of The Week: Massive DocuSign Phishing Attacks

May 20, 2017 10:20:42 AM By Stu Sjouwerman

DocuSign has admitted they were the victim of a data breach of customer email addresses only that has led to massive phishing attacks which used the exfiltrated DocuSign information. ...

WanaCry Ransomware Was Not The First To Use NSA's ETERNALBLUE

May 18, 2017 7:25:23 AM By Stu Sjouwerman

April 14th this year, The Shadow Brokers released a stolen zoo of NSA hacking tools. One of these was ETERNALBLUE, a Windows exploit using an outdated Microsoft network communications ...

CBANC Peer Reviews of KnowBe4

May 17, 2017 3:32:05 PM By Stu Sjouwerman

CBANC is the largest online network of verified banking and credit union professionals. They provide answers for every bank and credit union, and allow you to tap into the collective ...

Shadow Brokers Offer New SaaS 0-Day Threat Subscription Model

May 16, 2017 4:13:15 PM By Stu Sjouwerman

The mysterious Shadow Brokers – the hackers who leaked the NSA SMB zero-day exploit that powered WanaCry into the world's worst ransomworm – are back, and could cause even more damage. In ...

Are The North Koreans Behind WanaCry Ransomware?

May 16, 2017 6:00:01 AM By Stu Sjouwerman

A North Korean hacking group is suspected to be behind WanaCry. Symantec and Kaspersky malware labs are investigating technical evidence that possibly suggests the North’s involvement, ...

CyberheistNews Vol 7 #20 [URGENT ALERT] Fight Back Against This Ransomware WMD NOW

May 15, 2017 8:48:43 AM By Stu Sjouwerman

Telefonica Victim Of $600,000 Bitcoin Ransomware Attack

May 12, 2017 4:51:40 PM By Stu Sjouwerman

Spanish telecoms giant Telefonica was confronted with 85 percent of their systems shut down after ransomware criminals infiltrated its systems demanding $550,000 in Bitcoin. Telefonica is ...

WannaCry Ransomware Attack Uses NSA 0-Day Exploits To Go On Worldwide Rampage

May 12, 2017 2:21:44 PM By Stu Sjouwerman

Raising Cyber Security Awareness Training Doesn’t Have to be Boring

May 12, 2017 11:02:23 AM By Stu Sjouwerman

You may not be aware that the Wall Street Journal recently created a separate WSJ Pro Cybersecurity newsletter in the form of a regular email with relevant news. Of course I subscribed to ...

Macron Campaign Fought Off Phishing Attacks With Cyberdeception Techniques

May 9, 2017 7:24:22 AM By Stu Sjouwerman

Gadi Evron is the Founder and CEO at IT security company Cymmetrica. He wrote a long-ish post on hackernoon (which is powered by Medium). I'm giving you the upshot, but first, what is ...

NEW: Download The "Weak Password Test" Utility

May 8, 2017 10:00:00 AM By Stu Sjouwerman

How weak are your user’s passwords? Are they... P@ssw0rd? Verizon's recent Data Breach Report showed that 81% of hacking-related breaches used either stolen and/or weak passwords. ...

CyberheistNews Vol 7 #19 [ALERT] FBI: "CEO Fraud Is Now a 5.3 Billion Email Scam"

May 8, 2017 9:49:19 AM By Stu Sjouwerman

CyberheistNews | KnowBe4

How Good Is Antivirus Software At Protecting Itself? 32 Products Tested:

May 8, 2017 7:01:53 AM By Stu Sjouwerman

For the third time now, the experts at AV-TEST examined a large number of the security software applications on the market in terms of how well they protect themselves. The focus was on ...

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