KnowBe4 Blog

Keeping you informed. Keeping you aware.
Stay on top of the latest in human and agent security including social and prompt engineering, ransomware and phishing attacks.

Stu Sjouwerman

Founder and Executive Chairman

Stu Sjouwerman (pronounced “shower-man”) is the Founder and Executive Chairman 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.


Recent Posts

New Wave of Hospitality Phishing Attacks: Compromise User Credentials, Then Go Phish

The hospitality sector is seeing a new wave of phishing attacks. These new attacks are more plausible because they begin with compromised credentials and move to fraudulent emails sent ...

Organizations Starting to Understand the Impact of Ransomware, But Their Efforts Not Enough to Overcome Infostealer Malware

Recent findings in a SpyCloud report shows companies are starting to recognize and shift their priorities to defend against ransomware attacks, but the use of infostealer malware still ...

[NEW RELEASE]: Unleash the Power of Cybersecurity Education with KnowBe4’s 'Hack-A-Cat' on Roblox

What do cheese, fish and cybersecurity training have in common? Each of these comes together to help keep kids informed about cyber threats and cybersecurity best practices with KnowBe4’s ...

Cybercriminals Use Google Looker Studio to Host Crypto Scam to Steal Money and Credentials

Security researchers at Check Point have discovered yet another attack that leverages legitimate web applications to host attacks in order to bypass security scanners.

Tools From Cybercrime Software Vendor W3LL Found to be Behind the Compromise of 56K Microsoft 365 Accounts

A new report uncovers the scope and sophistication found in just one cybercrime vendor’s business that has aided credential harvesting and impersonation attacks for the last 6 years.

MFA Defenses Fall Victim to New Phishing-As-A-Service Offerings

ZeroFox warns that phishing-as-a-service (PhaaS) offerings are increasingly including features to bypass multi-factor authentication.

[YIKES] AI Now Enables Subliminal Image "Inception"

Seen Christopher Nolan's movie Inception? If you haven't, it's about a thief who is given the task of planting an idea into the mind of a CEO. The technology of implanting ideas is ...

Chinese Spies Infected Dozens of Networks With Thumb Drive Malware

WIRED just published an article that made me both disappointed and surprised at the same time. Security researchers found USB-based Sogu espionage malware spreading within African ...

New SEC Rules Add Challenges in Uncertain Cyber Insurance Market

[BUDGET AMMO] Jeremy King is a partner at Olshan Frome Wolosky. He wrote an article for Bloomberg where he analyzed cyber risk management issues that companies should prioritize in ...

Vanishing Act: The Secret Weapon Cybercriminals Use in Your Inbox

Researchers at Barracuda describe how attackers use legitimate email inbox rules to control compromised accounts and evade detection.