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

Not Just Us: North Korean Remote IT Fraudster Arrested in Tennessee

Aug 9, 2024 3:04:47 PM By Stu Sjouwerman

Just when we thought we had something special with our very own North Korean hacker, it turns out this type of fraud has made it to the Volunteer State.

New Phishing Campaign Targets Israeli Organizations To Deliver Malware

Aug 8, 2024 3:36:17 PM By Stu Sjouwerman

A new phishing campaign is targeting Israeli organizations to deliver the RHADAMANTHYS information-stealing malware, Cyber Security News reports.

SEC Report Provides Insight into Key Tronic Ransomware Costs Totaling Over $17 Million

Aug 8, 2024 3:36:04 PM By Stu Sjouwerman

The financial repercussions of the May 2024 ransomware attack on the electronics manufacturing services firm Key Tronic underscores just how costly these attacks are.

[On-Demand Webinar] 2024 Phishing Insights: What 11.9 Million User Behaviors Reveal About Your Risk

Aug 8, 2024 8:30:00 AM By Stu Sjouwerman

Your secret weapon to combat cyber threats might be just under your nose! Cybercriminals continue to exploit vulnerabilities while upping their game with new and more sinister attack ...

62% of Phishing Emails Bypassed DMARC Checks in 1H of 2024

Aug 7, 2024 3:32:01 PM By Stu Sjouwerman

A report from Darktrace has found that 62% of phishing emails in the first half of 2024 were able to bypass DMARC verification checks in order to reach users’ inboxes.

“Pastejacking” Attacks Are Becoming a Thing (Because Users are Falling for Them)

Aug 7, 2024 3:29:49 PM By Stu Sjouwerman

New analysis shows users can be convinced to copy and paste malicious code on behalf of the attacker.

AI Tools Have Increased the Sophistication of Social Engineering Attacks

Aug 6, 2024 2:04:50 PM By Stu Sjouwerman

The Cyber Security Agency of Singapore (CSA) has warned that threat actors are increasingly using AI to enhance phishing and other social engineering attacks, Channel News Asia reports.

New Malvertising Campaign Impersonates Google Authenticator

Aug 6, 2024 2:04:46 PM By Stu Sjouwerman

Researchers at Malwarebytes spotted a malvertising campaign that abused Google Ads to target people searching for Google Authenticator.

CyberheistNews Vol 14 #32 QR Code Phishing is Still on the Rise - The SEG is Dead

Aug 6, 2024 9:00:00 AM By Stu Sjouwerman

KnowBe4 Honors the World Famous Hacker for the First National Social Engineering Day

Aug 6, 2024 8:30:00 AM By Stu Sjouwerman

On August 6th, 2024, we celebrate National Social Engineering Day – a new national day established by KnowBe4 and officially recognized by the National Day Calendar. The day aims to ...

Brand Impersonation of Microsoft Increases 50% in One Quarter

Aug 5, 2024 4:30:25 PM By Stu Sjouwerman

The use of the Microsoft brand in phishing attacks demonstrates both its widespread credibility as well as the continued success of attacks leveraging it.

Your Users Still Fall For Phishing Attacks Because of URL Shorteners

Aug 2, 2024 3:58:11 PM By Stu Sjouwerman

Analysis of current phishing attacks by security researchers have uncovered an increase in the use of trusted shortlink services.

Prisoner Swap Includes Russian Hackers and KGB Assassin

Aug 2, 2024 1:49:06 PM By Stu Sjouwerman

Included among the U.S. prisoners being sent back to Russia in the swap are two prominent convicted hackers, both of whom were serving lengthy sentences, and a KGB assassin.

Global Cyber Attacks See Highest Increases in the Last Two Years

Aug 2, 2024 9:44:48 AM By Stu Sjouwerman

New analysis of Q2 2024 cyber attacks shows the number of attacks experienced weekly by organizations globally is on the rise.

New Research: Smaller Companies Receiving Higher Rates Of Phishing Emails

Aug 2, 2024 9:44:44 AM By Stu Sjouwerman

Researchers at Barracuda have found that smaller companies tend to receive a higher rate of phishing attacks spread across the organization, according to a report looking at the phishing ...

KnowBe4 Named a Leader in the Summer 2024 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) Software

Aug 1, 2024 8:00:00 AM By Stu Sjouwerman

We are excited to announce that KnowBe4 has been named a leader in the Summer 2024 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) for the PhishER platform for ...

Security Awareness Training Blog

View Topics

Stu Sjouwerman

Books

Recent Posts

Not Just Us: North Korean Remote IT Fraudster Arrested in Tennessee

New Phishing Campaign Targets Israeli Organizations To Deliver Malware

SEC Report Provides Insight into Key Tronic Ransomware Costs Totaling Over $17 Million

[On-Demand Webinar] 2024 Phishing Insights: What 11.9 Million User Behaviors Reveal About Your Risk

62% of Phishing Emails Bypassed DMARC Checks in 1H of 2024

“Pastejacking” Attacks Are Becoming a Thing (Because Users are Falling for Them)

AI Tools Have Increased the Sophistication of Social Engineering Attacks

New Malvertising Campaign Impersonates Google Authenticator

CyberheistNews Vol 14 #32 QR Code Phishing is Still on the Rise - The SEG is Dead

KnowBe4 Honors the World Famous Hacker for the First National Social Engineering Day

Brand Impersonation of Microsoft Increases 50% in One Quarter

Your Users Still Fall For Phishing Attacks Because of URL Shorteners

Prisoner Swap Includes Russian Hackers and KGB Assassin

Global Cyber Attacks See Highest Increases in the Last Two Years

New Research: Smaller Companies Receiving Higher Rates Of Phishing Emails

KnowBe4 Named a Leader in the Summer 2024 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) Software

Half of Travel-Themed Spam Emails Are Scams

The First Half of 2024 Results in More Than 1 Billion Data Breach Victims

KnowBe4 Named a Leader in the Summer 2024 G2 Grid Report for Security Awareness Training

Organizations Prepare for More Evolved AI-Based Cyber Attacks as Deepfakes Become Top Concern

Search Our Blog

Subscribe To Our Blog

Posts By Topic

Get the latest about social engineering

Subscribe to CyberheistNews

Get the latest about social engineering

Subscribe to CyberheistNews