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

[Eye Opener] HTML Phishing Attacks Surge by 100% in 12 Months

May 7, 2023 11:57:55 AM By Stu Sjouwerman

The Cyberwire reported: "Barracuda released a study this morning indicating that HTML attacks have doubled since last year.

[On-Demand] A Master Class on IT Security: Roger Grimes Teaches You Phishing Mitigation

May 5, 2023 8:35:23 AM By Stu Sjouwerman

Phishing attacks have come a long way from the spray-and-pray emails of just a few decades ago. Now they’re more targeted, more cunning and more dangerous. And this enormous security gap ...

[New Feature] Show Your C-Suite the ROI of Security Awareness Training with KnowBe4 Executive Reports

May 5, 2023 8:00:00 AM By Stu Sjouwerman

Do you spend too much time creating custom security awareness reports for your C-suite or board of directors? If so, we’re happy to share our new KMSAT feature, Executive Reports.

CNBC: Why Nearly 80% of Leaders are Increasing Cybersecurity Spend

May 4, 2023 8:53:31 AM By Stu Sjouwerman

According to a recent EY survey, nearly 80% of business leaders are increasing their cybersecurity investment in the next six to 12 months.

Response-Based Business Email Compromise Contributes to 97% of Attacks

May 4, 2023 8:39:58 AM By Stu Sjouwerman

The malwareless and seemingly benign nature of business email compromise emails, mixed with impersonation techniques, are difficult to spot as being malicious, making them even more ...

Global Cyber Attacks Continue to Rise as Q1 Sees a 7% Increase

May 4, 2023 8:39:05 AM By Stu Sjouwerman

New data highlights just how frequently cyber attacks are attempted and organizations are impacted - and the numbers are far more surprising than you’d think.

Ransomware Attacks Surge 91% in a Single Month to Reach an All-Time High

May 4, 2023 8:38:45 AM By Stu Sjouwerman

March saw a huge jump in ransomware compared to January and February, signifying that organizations should expect to see a lot more of these attacks this year.

Walmart Jumps to Top of the List of the Worlds Most Impersonated Brands Used in Phishing Attacks

May 4, 2023 8:38:24 AM By Stu Sjouwerman

Walmart’s rise to become the brand most likely to be impersonated in Q1 of this year is a real problem.

Malware Downloads Facilitated by Social Engineering

May 4, 2023 8:28:47 AM By Stu Sjouwerman

The most common route for malware infections remains social engineering in its various forms: phishing, vishing, etc. Such approaches take advantage of users’ deliberately cultivated ...

[May the 4th] How Security Awareness Training Could Have Saved the Death Star

May 4, 2023 8:05:00 AM By Stu Sjouwerman

It's May the 4th, a holiday that celebrates our love for a galaxy far, far, away - Star Wars! I can't help but share some cybersecurity learning lessons from one of my favorite Sci-Fi ...

[FREE RESOURCE KIT] New Password Security Resource Kit to Celebrate World Password Day!

May 4, 2023 8:00:00 AM By Stu Sjouwerman

It's World Password Day! This holiday is to ensure everyone always practices good password hygiene. This year, we wanted to share the best password resources with you to share with your ...

WSJ: "Merck’s Insurers On the Hook in $1.4 Billion NotPetya Attack, Court Says"

May 3, 2023 10:45:35 AM By Stu Sjouwerman

I get the WSJ Cybersecurity newsletter, which by the way is warmly recommended. Kim Nash today reported a shocker which will make everyone's insurance premiums go even further up: "Six ...

[Feet on the Ground] Stepping Carefully When Making an AI Your BFF

May 2, 2023 1:40:51 PM By Stu Sjouwerman

Bloomberg's Brad Stone wrote an op-ed covering this topic. In the past month, a chatbot called "My AI" or "Sage" has appeared as a new friend for several hundred million Snapchat users. ...

[Watch Your Back] New Fake Chrome Update Error Attack Targets Your Users

May 2, 2023 10:34:03 AM By Stu Sjouwerman

Compromised websites (legitimate sites that have been successfully compromised to support social engineering) are serving visitors fake Google Chrome update error messages.

CyberheistNews Vol 13 #18 [Eye on AI] Does ChatGPT Have Cybersecurity Tells?

May 2, 2023 9:00:00 AM By Stu Sjouwerman

CyberheistNews Vol 13 #18 | May 2nd, 2023 [Eye on AI] Does ChatGPT Have Cybersecurity Tells? Poker players and other human lie detectors look for "tells," that is, a sign by which someone ...

Phishing as an Espionage Tactic for Cybercriminals

May 2, 2023 8:21:31 AM By Stu Sjouwerman

Phishing is a familiar criminal tactic. It’s also used by intelligence services for cyber espionage campaigns. On Friday, April 28th, 2023, CERT-UA, Ukraine’s Computer Emergency Response ...

Phishing Attack Frequency Rises Nearly 50% as Some Sectors Increase by as Much as 576%

May 1, 2023 10:31:33 AM By Stu Sjouwerman

New data provides a multi-faceted look at the changing face of phishing attacks. This data includes who’s being targeted, the tactics being used, and why phishing attacks continue to work.

Automate Reporting for Security Awareness Training Events and Suspicious Email Remediation Management with Cortex XSOAR and KnowBe4

May 1, 2023 8:00:00 AM By Stu Sjouwerman

Security teams face unique challenges in today’s rapidly-changing landscape of phishing, malware, and other social engineering and cybersecurity threats. Collaboration across disparate ...

Your KnowBe4 Fresh Content Updates from April 2023

Apr 28, 2023 8:00:00 AM By Stu Sjouwerman

Check out the 19 new pieces of training content added in April, alongside the always fresh content update highlights, events and new features.

Heart of the Matter: How LLMs Can Show Political Bias in Their Outputs

Apr 28, 2023 6:59:09 AM By Stu Sjouwerman

Wired just published an interesting story about political bias that can show up in LLM's due to their training. It is becoming clear that training an LLM to exhibit a certain bias is ...

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