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

Ransomware Payments On The Decline As Cyber Attackers Focus on The Smallest, And Largest, Organizations

Jan 31, 2024 1:52:23 PM By Stu Sjouwerman

New data for Q4 of 2023 reveals a sizable shift in the cyber threat landscape, with serious implications regarding ransomware and social engineering attacks targeting both the largest and ...

FBI Cyber Alert: Tech Support Scams Steal Cash or Precious Metals

Jan 31, 2024 1:52:13 PM By Stu Sjouwerman

The US Federal Bureau of Investigation (FBI) has issued an alert that scammers are tricking victims into converting their savings into cash or precious metals, then sending couriers to ...

[Live Demo] Customizing Your Compliance Training to Increase Effectiveness

Jan 31, 2024 8:00:00 AM By Stu Sjouwerman

Linking compliance training to specific outcomes is hard. Compliance training has a reputation for being challenging for organizations to offer, difficult to do right and employees are ...

The Percentage of Organizations Globally Struck by Ransomware Hits an All-Time High

Jan 30, 2024 1:52:43 PM By Stu Sjouwerman

Check Point’s review of ransomware shows that the percent of organizations worldwide hit by this greatest of cyberthreats rose by a whopping 33% in 2023.

Open Redirects Used to Disguise Phishing Links

Jan 30, 2024 1:52:38 PM By Stu Sjouwerman

Phishing attacks are increasingly using open redirects to evade detection by security filters, according to researchers at Trustwave.

CyberheistNews Vol 14 #05 Myth of Massive Data Breach Busted: Big Headlines Mask a Minor Threat

Jan 30, 2024 9:00:00 AM By Stu Sjouwerman

Forget Deepfake Audio and Video. Now There’s AI-Based Handwriting!

Jan 29, 2024 2:47:56 PM By Stu Sjouwerman

Researchers have developed AI technology that can mimic someone’s handwriting with only a few paragraphs of written content. Experts worry about the possibility of misuse.

Malvertising Targets Chinese-Speaking Users

Jan 29, 2024 2:47:47 PM By Stu Sjouwerman

Researchers at Malwarebytes warn that a malvertising campaign is targeting Chinese-speaking users with phony ads for encrypted messaging apps. The ads impersonate apps that are restricted ...

Identify Weak User Passwords With KnowBe4’s Enhanced Weak Password Test

Jan 29, 2024 2:45:47 PM By Stu Sjouwerman

Passwords are part of every organization’s security risk profile. Just one weak password with access to an organization’s critical systems can cause a breach, take down a network or ...

Scammers Use Airdrops to Lure Users With Phony NFTs

Jan 29, 2024 8:42:17 AM By Stu Sjouwerman

Researchers at Check Point warn that scammers are using airdrops to distribute phony non-fungible tokens (NFTs) that direct users to malicious sites.

Bravo Host Andy Cohen Scammed Out of a “Sizable” Amount of Money by Fraudsters Posing as the Bank

Jan 29, 2024 8:41:52 AM By Stu Sjouwerman

Bravo host Andy Cohen tells how he became the victim of an impersonation scam that gave scammers access to control his bank account.

Your KnowBe4 Compliance Plus Fresh Content Updates from January 2024

Jan 29, 2024 8:00:00 AM By Stu Sjouwerman

Check out the January updates in Compliance Plus so you can stay on top of featured compliance training content.

Your KnowBe4 Fresh Content Updates from January 2024

Jan 26, 2024 8:00:00 AM By Stu Sjouwerman

Check out the 37 new pieces of training content added in January, alongside the always fresh content update highlights, events and new features.

Houston, We Have a 2024 China Problem

Jan 26, 2024 7:02:27 AM By Stu Sjouwerman

Russia is not the only global problem that democracy has to deal with. The Chinese regime ran large influence campaigns, attempting mass social engineering in the U.S. 2022 midterm ...

The Number of Ransomware Attack Victims Surge in 2023 to over 4000

Jan 25, 2024 12:43:48 PM By Stu Sjouwerman

The surge in Ransomware-as-a-Service affiliates is likely the reason behind the dramatic increase in the number of victimized organizations, with all indicators suggesting that this trend ...

HP Enterprise Reveals It was hacked by the same Russians that broke into Microsoft

Jan 25, 2024 11:24:46 AM By Stu Sjouwerman

In a new SEC disclosure, Hewlett Packard Enterprise (HPE) announced on Wednesday that it fell prey to the same Russian intelligence group, known as Midnight Blizzard or Cozy Bear, that ...

New Evasive Phishing Technique “Legacy URL Reputation Evasion" (LURE)

Jan 25, 2024 8:59:50 AM By Stu Sjouwerman

Researchers at Menlo Security observed a 198% increase in browser-based phishing attacks over the past six months.

Social Engineering Attacks Rising in the Trucking Industry

Jan 25, 2024 8:59:28 AM By Stu Sjouwerman

Spear phishing and voice phishing (vishing) are on the rise in the trucking industry, according to a new report from the National Motor Freight Traffic Association (NMFTA).

New Deepfake Video Scam has “Taylor Swift” Offering Free French Cookware

Jan 25, 2024 8:59:23 AM By Stu Sjouwerman

A new wave of ads utilizing video of well-known celebrities seemingly promoting video games, fake giveaways, and more are starting to popup, and fans are falling for this trap.

Use of Generative AI Apps Jumps 400% in 2023, Signaling the Potential for More AI-Themed Attacks

Jan 24, 2024 8:20:31 AM By Stu Sjouwerman

As the use of Cloud SaaS platforms of generative AI solutions increases, the likelihood of more “GPT” attacks used to gather credentials, payment info and corporate data also increases.

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