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

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Brand-New Ransomware Simulator Tool Now with Two New Ransomware Scenarios

Jul 11, 2019 7:44:54 AM By Stu Sjouwerman

The bad guys are continuing to evolve their approach to evading detection. That’s why we’ve updated our Ransomware Simulation tool “RanSim” to include two new ransomware scenarios! These ...

Homeland Security Warning About Phishing As A Threat to 2020 Elections

Jul 10, 2019 7:15:43 AM By Stu Sjouwerman

The US Department of Homeland Security is warning state election officials that phishing attacks are one of the greatest threats to watch out for as the 2020 elections approach.

Automated Tailored EBAY Spam Campaign Leads to Risky Sites

Jul 10, 2019 7:10:31 AM By Stu Sjouwerman

Automated spam on eBay is spreading tailored phishing messages offering to promote users’ products, and the links the spammers share can lead to dangerous websites, according to Paul ...

Cybersecurity Remains a Top Priority During M&A Diligence

Jul 9, 2019 4:17:37 PM By Stu Sjouwerman

M&A is no longer just about revenue, assets, and intellectual property; many organizations are increasingly worried about cybersecurity posture and risk, requiring appropriate ...

The Stock Market Doesn’t React Well to Data Breaches

Jul 9, 2019 1:03:57 PM By Stu Sjouwerman

The latest data from UK-based research firm, Comparitech, shows that organizations who suffer a data breach continue to suffer in the stock market well after.

CyberheistNews Vol 9 #28 [Heads-up] Cyber Criminals Refine Their Social Engineering Tactics

Jul 9, 2019 9:37:16 AM By Stu Sjouwerman

British Airways Hit With Record $229 Million GDPR Fine Following 2018 Data Breach

Jul 8, 2019 1:56:02 PM By Stu Sjouwerman

U.K.-based airline British Airways (BA) is facing a record fine of £183 million ($229 million) after suffering a cyberattack in September last year. The U.K. Information Commissioner’s ...

Scam Of The Week: Microsoft OneNote Audio Note Phishing Emails

Jul 8, 2019 10:14:56 AM By Stu Sjouwerman

Phishing scammers are coming up with more innovative methods to convince their targets to provide login credentials. Such is the case with a new OneNote Audio Note phishing campaign that ...

Phishing And Impersonation Attacks Balloon in South Africa

Jul 8, 2019 10:00:46 AM By Stu Sjouwerman

South African companies saw an increase in phishing attacks containing malicious links or attachments in the past year. This is according to Mimecast’s 2019 State of E-mail Security ...

KnowBe4’s Year-Over-Year Sales Skyrocket 50% Over Q2 2019 for Another Record-Breaking Quarter

Jul 8, 2019 9:41:07 AM By Stu Sjouwerman

I'm happy to announce that in the Second Quarter of 2019, our team reached an impressive 50% growth over Q2 2018 along with increasing customer accounts to well over 26,000.

Discovered This Year: 5,334 Kits Offering Evasive Criminal Phishing-as-a-Service

Jul 8, 2019 8:00:00 AM By Stu Sjouwerman

Commodity phishing kits are making it easier for unskilled criminals to run sophisticated phishing campaigns for a low price, according to a report from cloud security provider Cyren.

[Heads-up] IT Pros In The Trenches Of Iran And China's New Cyber War Against The U.S.

Jul 8, 2019 8:00:00 AM By Stu Sjouwerman

You did not sign up for this, but you are finding yourself in the trenches of a cyber war which is slowly but surely moving from a cold to a hot stage. The latest development is that the ...

“Lack of Security Awareness” a Major Reason Why Financial Firms Are 300 Time More Likely to Fall Prey to Cyberattacks

Jul 8, 2019 8:00:00 AM By Stu Sjouwerman

The bad guys always go where the money is. And financial firms are grossly ill-prepared for cyberattacks and suffer higher costs in addressing successful attacks. Boston Consulting Group ...

80% of all Brand Deception Phishing Scams Targeting Execs Pretend to be Microsoft

Jul 8, 2019 8:00:00 AM By Stu Sjouwerman

The prevalence of Office 365 and the Windows OS has caused cybercriminals to choose the software titan as their primary brand used in identity deception phishing scams.

"YouTube mystery ban on hacking videos has content creators puzzled"

Jul 5, 2019 4:14:22 PM By Stu Sjouwerman

That was the title of the always entertaining The Register's post about YouTube, under fire since inception for building a business on other people's copyrights and in recent years for ...

KnowBe4 Translations Update

Jul 5, 2019 10:34:34 AM By Stu Sjouwerman

The first half of the year we added 1,206 pieces of translated content and we plan to release even more in the second half. Here is a summary:

Over Half of Employees Don’t Adhere to Email Security Protocols

Jul 5, 2019 10:18:37 AM By Stu Sjouwerman

A new survey by Barracuda Networks shows that the vast majority (87%) of decision makers believe email threats will rise in the coming year. However, companies are ill-prepared to defend ...

Updates to the KnowBe4 Privacy Policy

Jul 3, 2019 11:38:48 AM By Stu Sjouwerman

We have made a few updates to both our marketing and product based privacy policies. These changes are intended to clarify some statements and to be more transparent about how we process ...

Globally, One-Third of Organizations Experience Ransomware Attacks Weekly

Jul 3, 2019 10:44:18 AM By Stu Sjouwerman

The latest data from Australian telecommunications provider Telstra shows ransomware is running rampant, with security breaches not far behind in frequency.

ATM Card Number Scammer Sentenced to 32 Months in Prison

Jul 3, 2019 10:41:10 AM By Stu Sjouwerman

The story of one text-based scam shows how easy it is for literally anyone to become a cybercriminal. It also shows how the amateurs should leave it to the professionals.

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Stu Sjouwerman

Books

Recent Posts

Brand-New Ransomware Simulator Tool Now with Two New Ransomware Scenarios

Homeland Security Warning About Phishing As A Threat to 2020 Elections

Automated Tailored EBAY Spam Campaign Leads to Risky Sites

Cybersecurity Remains a Top Priority During M&A Diligence

The Stock Market Doesn’t React Well to Data Breaches

CyberheistNews Vol 9 #28 [Heads-up] Cyber Criminals Refine Their Social Engineering Tactics

British Airways Hit With Record $229 Million GDPR Fine Following 2018 Data Breach

Scam Of The Week: Microsoft OneNote Audio Note Phishing Emails

Phishing And Impersonation Attacks Balloon in South Africa

KnowBe4’s Year-Over-Year Sales Skyrocket 50% Over Q2 2019 for Another Record-Breaking Quarter

Discovered This Year: 5,334 Kits Offering Evasive Criminal Phishing-as-a-Service

[Heads-up] IT Pros In The Trenches Of Iran And China's New Cyber War Against The U.S.

“Lack of Security Awareness” a Major Reason Why Financial Firms Are 300 Time More Likely to Fall Prey to Cyberattacks

80% of all Brand Deception Phishing Scams Targeting Execs Pretend to be Microsoft

"YouTube mystery ban on hacking videos has content creators puzzled"

KnowBe4 Translations Update

Over Half of Employees Don’t Adhere to Email Security Protocols

Updates to the KnowBe4 Privacy Policy

Globally, One-Third of Organizations Experience Ransomware Attacks Weekly

ATM Card Number Scammer Sentenced to 32 Months in Prison

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