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

FBI Warns of Cybercriminals Using Generative AI to Launch Phishing Attacks

Dec 6, 2024 9:37:42 AM By Stu Sjouwerman

The US Federal Bureau of Investigation (FBI) warns that threat actors are increasingly using generative AI to increase the persuasiveness of social engineering attacks.

Your KnowBe4 Fresh Content Updates from November 2024

Dec 6, 2024 8:00:00 AM By Stu Sjouwerman

Check out the 84 new pieces of training content added in November, alongside the always fresh content update highlights, events and new features.

Malicious Google Ads Target Users Seeking Solutions to Printer Problems

Dec 3, 2024 2:43:27 PM By Stu Sjouwerman

Scammers are abusing Google ads to target users searching for help with printer problems, according to researchers at Malwarebytes.

Phishing Attacks Impersonating Big Brands Start to Zero in on Just One Brand

Dec 3, 2024 2:43:22 PM By Stu Sjouwerman

The latest data on brand phishing trends shows one brand dominating quarter over quarter, but also continuing to take on a larger share of the brand impersonation.

CyberheistNews Vol 14 #49 [Heads Up] Bad Actor Uses Deepnude AI Image Generator to Lure And Infect Users

Dec 3, 2024 9:00:00 AM By Stu Sjouwerman

China Threat Actor Targets Individuals and Entities in Japan Via Spear Phishing Campaign

Dec 2, 2024 2:42:53 PM By Stu Sjouwerman

Researchers at Trend Micro warn that the China-aligned threat actor Earth Kasha has launched a new spear phishing campaign targeting individuals and organizations in Japan.

Cruel Year-End Twist: When Fake Firing Is A Real Phishing Attack

Dec 2, 2024 2:42:51 PM By Stu Sjouwerman

Cybercriminals are constantly evolving their tactics to exploit our vulnerabilities. A recent phishing campaign has taken this to a new low, preying on people's fear of job loss to trick ...

[NEW PRODUCT]: KnowBe4’s AIDA: Revolutionizing Security Awareness Training with AI-Powered Automation and Personalization

Dec 2, 2024 10:57:00 AM By Stu Sjouwerman

Technological advances in artificial intelligence (AI) are only making the ongoing problem of social engineering worse.

Malicious Loan Apps Target Android Users in Africa, South America and Asia

Nov 27, 2024 12:19:49 PM By Stu Sjouwerman

Researchers at McAfee warn of a surge in malicious loan apps targeting Android users across South America, Southern Asia, and Africa.

Nearly Every Hacker Believes AI Tools Have Created a New Attack Vector

Nov 27, 2024 12:19:44 PM By Stu Sjouwerman

A new survey of hackers shows that AI is not only empowering hackers to be more effective, but that AI itself is “ripe for exploitation.”

75% of Black Friday Spam Emails Are Scams

Nov 27, 2024 10:16:06 AM By Stu Sjouwerman

Three out of four Black Friday-themed spam emails are scams, according to researchers at Bitdefender. Most of these scams are targeting users in the US and Europe.

[New!] Check Out These Powerful New KnowBe4 AI Features

Nov 26, 2024 11:26:17 AM By Stu Sjouwerman

You do not want to miss this one! You can now see our AI Defense Agents (AIDA) live in a demo, now that they are released. Customers can now fight AI with AI !

Chinese Threat Actor Targets Black Friday Shoppers With Phishing Campaign

Nov 26, 2024 9:39:08 AM By Stu Sjouwerman

Researchers at EclecticIQ warn that the financially motivated Chinese threat actor “SilkSpecter” has launched a phishing campaign targeting Black Friday shoppers across Europe and the US.

U.K. Residents are Victims of the Latest Phishing Scam Targeting Starbuck Customer Credentials

Nov 26, 2024 9:38:48 AM By Stu Sjouwerman

Analysis of a new phishing attack highlight just how easy it can be to spot these kinds of attacks if recipients were properly educated.

CyberheistNews Vol 14 #48 [Eye Opener] Phishing Attacks Now Exploit Visio and SharePoint Files

Nov 26, 2024 9:28:07 AM By Stu Sjouwerman

Phishing Emails Use SVG Files to Avoid Detection

Nov 22, 2024 11:39:14 AM By Stu Sjouwerman

Phishing emails are increasingly using Scalable Vector Graphics (SVG) attachments to display malicious forms or deliver malware, BleepingComputer reports.

[Heads Up] Bad Actor Uses Deepnude AI Image Generator to Lure And Infect Users

Nov 22, 2024 11:39:11 AM By Stu Sjouwerman

The threat group FIN7 is using the lure of generating nude images of favorite celebrities to get victims to download their NetSupport RAT.

Phishing Attacks Exploits the Open Enrollment Period

Nov 22, 2024 9:18:17 AM By Stu Sjouwerman

A phishing campaign is impersonating HR to target employees who are making annual insurance changes during the open enrollment period, according to researchers at Abnormal Security.

Ransomware Gangs Evolve: They're Now Recruiting Penetration Testers

Nov 20, 2024 2:22:16 PM By Stu Sjouwerman

A new and concerning cybersecurity trend has emerged. According to the latest Q3 2024 Cato CTRL SASE Threat Report from Cato Networks, ransomware gangs are now actively recruiting ...

Out of 29 Billion Cybersecurity Events, Phishing was the Primary Method of Initial Attack

Nov 20, 2024 2:22:11 PM By Stu Sjouwerman

The newly released single largest analysis of cyber attacks across all of 2023 show a strong tie between the use of phishing and techniques designed to gain credentialed access.

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