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

The U.K.'s NCSC and U.S. FBI Warn of Iranian Spear-Phishing Attacks

Oct 2, 2024 3:10:00 PM By Stu Sjouwerman

The U.K.’s National Cyber Security Centre (NCSC) and the U.S. FBI have released an advisory warning of Iranian state-sponsored spear-phishing attacks targeting “individuals with a nexus ...

Dick’s Sporting Goods Cyber Attack Underscores Importance of Email Security and Internal Controls

Oct 2, 2024 3:09:58 PM By Stu Sjouwerman

The recent cyber attack on Dick's Sporting Goods makes it clear that email played a critical role and emphasizes the need for better security controls.

[Wake-Up Call] Senator Falls Victim to Deepfake Scam—Are Your Users Next?

Oct 1, 2024 1:56:14 PM By Stu Sjouwerman

When technology blurs the lines between reality and fiction, a recent incident involving U.S. Senator Ben Cardin serves as a stark reminder of the growing threat posed by deepfake scams.

Threat Actors Behind MFA Bypass Service ‘OTP Agency’ Plead Guilty to Fraud

Oct 1, 2024 1:56:11 PM By Stu Sjouwerman

The criminal prosecution of the threat actors behind the "OTP Agency" has highlighted an ingenious new tactic that cybercriminals can use to bypass multi-factor authentication.

New Survey Shows 40% of Respondents Never Received Cybersecurity Training From Their Employer

Oct 1, 2024 1:56:07 PM By Stu Sjouwerman

Yubico has published a survey of 20,000 people from 10 countries around the world, finding that 40% of respondents have never received cybersecurity training from their employer.

The Number of Ransomware Attacks Around the World Increased by 73% in 2023

Sep 30, 2024 3:37:13 PM By Stu Sjouwerman

The number of ransomware attacks around the world increased by 73% in 2023, according to a new report by the Institute for Security and Technology’s Ransomware Task Force (RTF). These ...

CyberheistNews Vol 14 #40 Online Scams Shorten Their Cycles 58% And Make More Money

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

Your KnowBe4 Compliance Plus Fresh Content Updates from September 2024

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

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

Scammers Use QR Code Stickers to Target UK Motorists

Sep 27, 2024 11:17:01 AM By Stu Sjouwerman

Netcraft warns that scammers are posting QR code stickers on parking meters in the UK and other European countries.

Your KnowBe4 Fresh Content Updates from September 2024

Sep 27, 2024 8:00:00 AM By Stu Sjouwerman

Check out the 40 new pieces of training content added in September, alongside the always fresh content update highlights, events and new features.

Election-Themed Phishing Threats Are on the Rise

Sep 25, 2024 1:54:49 PM By Stu Sjouwerman

Researchers at ReliaQuest have published a report looking at cyber threats surrounding the upcoming US presidential election, warning that election-related phishing will continue to ...

[WTH?] Critical Vulnerabilities in Automated Tank Gauges. This Is Not OK.

Sep 25, 2024 9:58:54 AM By Stu Sjouwerman

A new wave of concern has surfaced around the security of Automated Tank Gauges (ATGs), critical systems that monitor and manage liquid levels in storage tanks at facilities like oil ...

McAfee Discovers New Phishing Campaign Targeting GitHub Users

Sep 24, 2024 10:35:59 AM By Stu Sjouwerman

A phishing campaign is targeting GitHub users with phony CAPTCHA pages, according to researchers at McAfee. The phishing emails ask users to address a security vulnerability in a GitHub ...

CyberheistNews Vol 14 #39 [EYE OPENER] Beyond Analysts: The Undeniable Leadership We Have in HRM

Sep 24, 2024 9:00:00 AM By Stu Sjouwerman

Scammers Abuse Virtual Shopping Lists to Trick Walmart Customers

Sep 23, 2024 3:18:48 PM By Stu Sjouwerman

Threat actors are abusing virtual shopping lists to trick Walmart customers into transferring money or disclosing personal information, according to researchers at Malwarebytes. Links to ...

Half of all Financial Services Cyber Attacks Start with a Very Costly Phish

Sep 23, 2024 3:18:45 PM By Stu Sjouwerman

New analysis of attacks on the financial sector shows that the combination of phishing emails and compromised credentials is a recurring — and financially impactful — threat.

Zscaler: There are 200 Malicious Lookalike Domains for Every 1 Impersonated Brand

Sep 23, 2024 9:40:17 AM By Stu Sjouwerman

Analysis of typosquatting and brand impersonation activity across 500 of the most visited domains provides insight in to how these techniques come together to effectively deceive.

Online Scams Are Shortening Their Cycles and Making More Money

Sep 20, 2024 10:27:19 AM By Stu Sjouwerman

New analysis of blockchain activity shows scammers are needing less time to obtain crypto payments and are seeing higher payoffs per scam.

Phishing Attacks Abuse Content Creation and Collaboration Platforms

Sep 20, 2024 10:27:16 AM By Stu Sjouwerman

Researchers at Barracuda have observed an increase in phishing attacks that abuse popular content creation and collaboration platforms. These include online graphic design platforms and ...

U.S. Government Indicts Chinese National For Alleged Spear Phishing Attacks

Sep 18, 2024 1:40:36 PM By Stu Sjouwerman

The U.S. Justice Department has indicted a Chinese national, Song Wu, for allegedly sending spear phishing emails to employees at various U.S. military and government entities, research ...

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