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

Phishing Email Attack Numbers “Decline” While Malware Volumes Increase 15%

New data focused on the first half of the year shows some anomalies. Phishing attacks are slowing down… that is, until you dive into the details.

New IBM report reveals the cost of a data breach now tops $4.45 million

IBM Security has released its annual Cost of a Data Breach Report, revealing that the global average cost of a data breach reached $4.45 million in 2023. This marks a significant increase ...

Beware of the Barbie Scam: What You Need to Know After the Recent Movie Release

Scammers are taking advantage of the popularity of the Barbie movie, according to researchers at McAfee.

The Secret's Out: Researchers Reveal Backdoor in Emergency Radio Encryption

For over 25 years, a technology utilized for vital data and voice radio communications globally has remained under wraps, preventing in-depth testing for potential vulnerabilities. ...

Phony Browser Updates Deliver NetSupport Trojan Using Social Engineering Tactics

A new social engineering campaign tracked as “FakeSG” is distributing the NetSupport remote access Trojan (RAT) via phony browser updates, according to researchers at Malwarebytes. The ...

FBI Warns of Increased Tech Support Scams Using Snail Mail

The US Federal Bureau of Investigation (FBI) has warned of an increase in tech support scams that attempt to trick users into sending cash via snail mail.

Save $200 on Your Security Awareness and Culture Professional (SACP) Certification

H Layer Credentialing is launching an updated exam form with new content and they need YOUR help! They are looking for professionals interested in earning their SACP Certification to ...

Microsoft was the Most Impersonated Brand in Q2, 2023

Microsoft was the most impersonated brand in phishing attacks during Q2, 2023, according to Check Point’s latest Brand Phishing Report.

European Union Healthcare Sees the Number of Cyber Incidents Double in 2023

A new report focused on the healthcare sector sheds light on the state of cyber attacks in the European Union, including the types of attacks, who’s targeted, motivations, and who’s ...

Business Email Compromise Now Has a $50 Billion Price Tag

The latest data from the FBI’s Internet Crime Complaint Center (IC3) ups the estimate for the cost of losses and exposure through business email compromise (BEC) attacks from 2013 through ...