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

$148 Million Lost to Gift Card Scams in 2021 (So Far)

A US Federal Trade Commission (FTC) data spotlight has found that people in the US lost $148 million to gift-card-related scams in the first nine months of 2021. The spotlight also found ...

NSA: Cyberattacks are Putting the “Security of our Nation” at Stake

When most see cyberattacks as something that is impactful at the organizational level, the head of the National Security Agency sees cyberattacks as being a threat to the entire nation.

The Evolving State of Cyber Insurance May Indicate More Scrutiny for IT and Security Teams

The need to balance offering coverage for cyber incidents with maintaining a profit has cyber insurers rethinking how they will approach measuring insured risk and exposure.

Over 1000 Arrests and $27 Million Intercepted in Massive INTERPOL Sting Operation

Bringing together specialized police units from 20 countries, Operation HAECHI-II targeted those involved in online fraud, romance scams, investment fraud and money laundering.

Netflix is the Latest Impersonated Brand in Ongoing Subscriber Targeting Scams

With the increased interest in and availability of movie and TV streaming services, plenty of new scams are popping up attempting to steal personal details and credit card information.

Wall Street Journal article: "Shaming Employees For Phishing is Counterproductive"

Shaming employees for falling for phishing attacks is the wrong approach, according to Dr. Karen Renaud, a chancellor’s fellow at the University of Strathclyde. In an article for the Wall ...

Log4j vulnerability - KnowBe4 Not Affected

KnowBe4 is aware of the recent log4j vulnerability (CVE-2021-44228) and has been investigating this issue in-depth. We can confirm that no KnowBe4 products are affected by this at this ...

The Unbearable Lightness of Phishing Pages

Researchers at Kaspersky have found that most phishing pages are active for less than one day, with many of them going offline after just a few hours. Most of these short-lived pages were ...

Socially Engineering Your Way to Customer Data

US telecommunications company Cox Communications has disclosed a data breach that exposed some customers’ information, BleepingComputer reports. The company said in a breach notification ...

2021 Security Hints & Tips for Holiday Travels

The holiday season may be closer to "normal" this year, and that means your users will be even more focused on holiday activities - including travel. Cybercriminals will undoubtedly be ...