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

Tripwire Black Hat Survey: "68% of Pros Felt Cyber Security Lacking After WannaCry & Petya Attacks"

Aug 13, 2017 8:21:38 AM By Stu Sjouwerman

Over two-thirds of Infosec Pros who were asked at Black Hat if they felt their organizations had made the necessary cyber security improvements since the WannaCry and Petya attacks ...

New Report: Ransomware Attack Downtime, Not Ransom Demand, is the Business Killer

Aug 12, 2017 10:58:49 AM By Stu Sjouwerman

I have been saying this here for the last few years, and I am encouraged to see it now confirmed by a new survey from our friends at Malwarebytes. They released their “Second Annual State ...

Cyber-Attacks Soar by a Quarter as Phishing Dominates

Aug 12, 2017 10:24:28 AM By Stu Sjouwerman

Cyber-attacks were up by a quarter in Q2 2017, with a surprising twist: global manufacturing is now the top target. The report from NTT Security also shows that phishing is the most ...

Locky Ransomware Returns with Phishing Campaign Pushing The Diablo6 Variant

Aug 12, 2017 9:39:28 AM By Stu Sjouwerman

Our friend Larry Abrams at Bleepingcomputer wrote August 9th: "Through a large malspam campaign, Locky is back and currently being heavily distributed worldwide. While Locky was at one ...

HealthCare Industry Needs Prescription For Next Wave of Ransomware Threats

Aug 12, 2017 9:05:45 AM By Stu Sjouwerman

According to a recent article in HealthCare IT News, "Ransomware 2.0: It's Coming, and Healthcare Needs to get Prepared", the next wave of ransomware may be much harder to spot, -- and ...

We Love The PhishMe Free Idea!

Aug 11, 2017 7:40:15 AM By Stu Sjouwerman

Yesterday, PhishMe's CEO Rohyt Belani came out with a great new initiative. They have created a "lite" version of their platform — they call it simplified — and they are giving it away ...

Top White House officials fall for prankster social engineering tricks

Aug 10, 2017 7:25:48 AM By Stu Sjouwerman

A UK-based email prankster used social engineering tactics to fool several top White House officials into responding to his messages, including the Trump administration’s cybersecurity ...

Key Ransomware Money Laundering Operation Taken Down and Owner Arrested in Greece

Aug 8, 2017 1:56:53 PM By Stu Sjouwerman

More than 4 Billion Dollars May Have Been Laundered If you’ve been the victim of a ransomware attack you know cybercrooks almost always demand payment in Bitcoin. Now we know that the US ...

Lessons from Social Engineering Disasters to Improve Security

Aug 8, 2017 12:35:01 PM By Stu Sjouwerman

Michele Fincher from the excellent team at www.social-engineer.com wrote: "In my fantasy life, I’m Ruby Rose from John Wick: Chapter 2, Gina Carano from Haywire, with possibly some ...

CyberheistNews Vol 7 #31 How Not to Fall for Phishing as an IT Pro

Aug 8, 2017 9:43:00 AM By Stu Sjouwerman

This password bombshell will make you scratch your head...

Aug 7, 2017 6:37:07 PM By Stu Sjouwerman

OK, this is a headscratcher. This is why we were surprised. I found it in a Wall Street Journal article today (paywall). Bill Burr, the author of “NIST Special Publication 800-63. ...

How Modern Email Phishing Attacks Have Organizations On The Hook

Aug 6, 2017 1:11:28 PM By Stu Sjouwerman

Israeli anti-phishing vendor IronScales came out with an interesting new report about phishing trends. They looked at more than 8,500 attacks that bypassed spam filters, from more than a ...

How Not To Fall For Phishing As An IT Pro

Aug 5, 2017 12:36:23 PM By Stu Sjouwerman

OK, here is a new spear phishing scheme that attacks your development team. Cyber criminals with IPs resolving to Russia hijacked an extension for Google Chrome and abused their illegal ...

Cerber Ransomware Can Now Steal Bitcoin Wallet Data And Browser Passwords

Aug 5, 2017 11:57:39 AM By Stu Sjouwerman

The Russian 800-pound gorilla Dridex Banking Trojan gang who are also behind the Cerber ransomware have just upped their game. Cerber is part of the small set of professional ransomware ...

CyberheistNews Vol 7 #30 Scary New Social Engineering Attack Turns Off Your Power

Aug 1, 2017 10:04:11 AM By Stu Sjouwerman

Hackers are targeting hotel Wi-Fi with particularly evil malware and spear phishing

Jul 25, 2017 10:13:54 AM By Stu Sjouwerman

The veteran DarkHotel hacking group is back with a few new tricks up their sleeve. These sophisticated hackers first began targeting high level executives in 2011 with a signature brand ...

CyberheistNews Vol 7 #29 CEO Fraud Attacks Were Far More Lucrative Than Ransomware Over the Past 3 Years

Jul 24, 2017 9:50:39 AM By Stu Sjouwerman

Data Breaches Are Up 29 Percent Over Last Year

Jul 22, 2017 11:52:38 AM By Stu Sjouwerman

Data breaches are running 29 percent above last year, according to a report released by the Identity Theft Resource Center and CyberScout. Hacking was the leading cause of data breaches ...

CEO Fraud Attacks Were Far More Lucrative than Ransomware over the Past 3 Years

Jul 22, 2017 10:07:43 AM By Stu Sjouwerman

Cisco's midyear report released this week showed that CEO Fraud netted cybercrime five times more money than ransomware over the last three years. The surprising highlight of Cisco's ...

New Phishing Templates: OJ Simpson Parole and Chester Bennington Suicide Note

Jul 21, 2017 8:45:37 AM By Stu Sjouwerman

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