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

CyberheistNews Vol #5 #50 When Your Corporate Culture Frowns On Mock Phishing Attacks

Nov 24, 2015 8:41:51 AM By Stu Sjouwerman

Now and then, when I talk to the IT people in larger organizations, they tell me they experience political headwinds in trying to get an awareness program rolled out that includes ...

2016 Will Show Increase In Shareholder Cybersecurity Lawsuits

Nov 22, 2015 7:34:05 AM By Stu Sjouwerman

NYSE Governance Services and Infosec company Veracode recently published results of a survey over of 276 board members titled "Cybersecurity and Corporate Liability". A massive 60 percent ...

When Your Corporate Culture Frowns On Mock Phishing Attacks

Nov 21, 2015 11:23:16 AM By Stu Sjouwerman

Now and then, when I talk to the IT people in larger organizations, they tell me they experience political headwinds in trying to get an awareness program rolled out that includes ...

[INFOGRAPHIC] The Top 5 Holiday Scams To Warn Your Users About

Nov 19, 2015 5:37:34 PM By Stu Sjouwerman

There are certain holiday scams we tend to see year after year. This infographic is great to share with your users to help them make smarter security decisions!

Ransomware News Roundup November 2015

Nov 17, 2015 5:42:21 PM By Stu Sjouwerman

DecryptorMax 24-hour deadline Ransomware strains use different ways to pressure victims into paying, varying from 7 days after which the ransom doubles, to threatening to publish files on ...

CyberheistNews Vol #5 #49 The Top 5 Holiday Scams To Warn Your Users About

Nov 17, 2015 9:28:19 AM By Stu Sjouwerman

This holiday season could be the most wonderful time of year for cyber criminals, according to digital identity company ThreatMetrix. In a new report, the firm reveals that it has ...

ISIS "Celebrates" Paris With Video - Inoculate Users Against Phishing Attacks

Nov 16, 2015 11:15:26 AM By Stu Sjouwerman

OK, bad news first. The world is shocked and angry about the attacks in Paris. That often causes emotional reactions, which the bad guys on the Internet are exploiting. ISIS has released ...

KnowBe4 and Kevin Mitnick Featured in USA Today Cybersecurity Supplement

Nov 13, 2015 10:36:35 AM By Stu Sjouwerman

We recently participated in USA Today's “Cyber Security” campaign that aims to encourage readers to recognize the importance of cyber security in their personal, financial and business ...

How to Phish Your Own Users And Why

Nov 12, 2015 10:29:40 AM By Stu Sjouwerman

Over the last few years, thousands of organizations in the U.S have started to phish their own users. IT pros have realized that doing this is urgently needed as an additional security ...

Bitdefender Releases Cryptowall 4.0 Ransomware Vaccine

Nov 11, 2015 3:10:08 PM By Stu Sjouwerman

Right after a new, badder version 4.0 of CryptoWall came out, Romanian security company Bitdefender has released a vaccine they claim will block ransomware infections. Andra Zaharia of ...

CyberheistNews Vol #5 #48 New Triple Threat Chimera: Ransomware, Extortion And Data Breach

Nov 10, 2015 8:12:43 AM By Stu Sjouwerman

OK, Heads Up! This has not hit U.S. shores yet, but it's just a matter of time. This nasty bit of crimeware is being beta-tested in Germany at the moment, and that is where the reports ...

FFIEC warns of increased ransomware attacks

Nov 9, 2015 10:35:38 AM By Stu Sjouwerman

Ransomware continues to be a source of worry and now U.S. regulatory agencies are getting in the fray. The Federal Financial Institutions Examination Council (FFIEC) published a statement ...

New Triple Threat Chimera: Ransomware, Extortion And Data Breach

Nov 7, 2015 10:33:57 AM By Stu Sjouwerman

OK, Heads Up! This has not hit U.S. shores yet, but it's just a matter of time. This nasty bit of crimeware is being beta-tested in Germany at the moment, and that is where the reports ...

CryptoWall v4.0 released: Now encrypts the file names as well

Nov 4, 2015 1:52:47 PM By Stu Sjouwerman

Lawrence Abrams from the famous bleepingcomputer site wrote at Spiceworks: "CryptoWall 4.0 has been released that displays a redesigned ransom note, new filenames, and now encrypts a ...

CyberheistNews Vol #5 #47 CryptoWall Damage 325 Million - FBI says: "Just Pay the Ransom"

Nov 3, 2015 9:50:51 AM By Stu Sjouwerman

A brand new report from the Cyber Threat Alliance (CTA) showed the staggering damage caused by a single Eastern European cyber mafia. The CTA is an industry group with big-name members ...

KnowBe4 Halloween 2015

Oct 30, 2015 4:27:28 PM By Stu Sjouwerman

We had a great time this year, but we had to keep it short because it was the last day of the month and things were super busy! We did have some time for our yearly parade to the local ...

Staggering CryptoWall Ransomware Damage: 325 Million Dollar

Oct 30, 2015 1:52:48 PM By Stu Sjouwerman

A brand new report from Cyber Threat Alliance showed the staggering damage caused by a single criminal Eastern European cyber mafia. The CTA is an industry group with big-name members ...

CyberheistNews Vol 5 #46 Beautiful Social Engineering Attack By Gorgeous IBM Rep

Oct 27, 2015 8:26:04 AM By Stu Sjouwerman

Big-time computer hackers are after proprietary information: source code, pharmaceutical research, legal documents, chemical formulas, blueprints, product designs and other trade secrets ...

FBI’s Advice on Ransomware? Just Pay The Ransom.

Oct 26, 2015 9:54:57 AM By Stu Sjouwerman

In-brief: The nation’s top law enforcement agency is warning companies that they may not be able to get their data back from cyber criminals who use Cryptolocker, Cryptowall and other ...

TalkTalk Hackers Demanded $122K in Bitcoin

Oct 24, 2015 10:50:54 AM By Stu Sjouwerman

TalkTalk, a British phone and broadband provider with more than four million customers, disclosed Friday that intruders had hacked its Web site and may have stolen personal and financial ...

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