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

Cyber Attacks and Data Breaches Cited as the Number One Business Risk for Organizations

Even when looking at the various kinds of risks to business, cyber attacks still remain the biggest problem. But new data shows there may be a lesson to be learned to minimize losses.

Don't Be Fooled By This Sneaky Disney+ Phishing Scam

A callback phishing campaign is impersonating Disney+ with phony invoices, according to researchers at Abnormal Security. The phishing emails targeted individuals at 22 organizations.

New York Unit of Worlds Largest Bank Becomes Ransomware Victim

The ransomware attack on ICBC Financial Services caused disruption of trading of U.S. Treasuries and marked a new level of breach that could have massive repercussions.

The Alarming Threat of Ransomware: Insights from the Secureworks State of the Threat Report 2023

In the ever-evolving landscape of cybersecurity, the battle against ransomware has taken a concerning turn. According to the latest findings from Secureworks annual State of the Threat ...

Financial Institutions are the Most Affected by Phishing Attacks and Scams

New data shows how the overwhelming majority of phishing attacks on financial institutions dwarf every other industry sector by as much as a factor of 30-to-1.

PDFs: Friend or Phishing Foe? Don't Get Caught by the Latest Scam Tactic

Researchers at McAfee warn that attackers are increasingly utilizing PDF attachments in email phishing campaigns.

How The Disinformation Machine Works, And How $400 Can Stop It

Specifically when wars break out, disinformation kicks into high gear. In the wake of the October 7 Hamas attack, the internet has been swamped with a deluge of disinformation. This ...

Phishing Kits Undergo an Evolution in Feature Set, Demand, and Branding

Now being commonly referred to as “Scama” – short for Scamming Method – these kits are being sold promoting highly advanced feature sets, turning the novice scammer into a pro.

Guarding Against the Rise of QR Code Phishing Attacks: How to Protect Yourself and Your Organization

In the ever-evolving landscape of cyber threats, scammers and hackers are relentless in exploiting every avenue of communication. From emails to texts, calls to QR codes, malicious actors ...