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

AI Disinformation Exposed: A Fake "Tom Cruise" Attacks the Olympics

Using a page straight out of the KGB playbook, a new AI-driven disinformation attack has been unleashed. The latest victim of this disturbing trend is none other than the International ...

[INFOGRAPHIC] Original Research: Cybersecurity Challenges Faced by European Infosec Leaders

Cybersecurity threats continue to put European organisations of all sizes at risk. Infosec leaders face multi-pronged challenges, from mitigating the threats themselves to managing the ...

“Skillful Social Engineering of the IT Support Desk” One of the Most Common Tactics in Ransomware Attacks

As ransom payments reach an all-time high, it’s time to look at attacks from a data perspective and find the greatest opportunities to stop these attacks.

New Phishing Campaign Abusing .top Domains

A phishing campaign is exploiting a large number of .top domains, according to researchers from WhoisXML API. In an article for CircleID, the researchers analyzed a phishing operation ...

New York Department of Financial Services Strengthens Cybersecurity Regulation

The NYDFS’ 23 NYCRR Part 500 has been updated to reflect the current preventative and responsive measures necessary for Financial Services org to be ready for cyber attacks.

New State of Phishing Report 2023: An Alarming Surge in Phishing Threats

The fight against cyber threats remains a top priority for all organizations, including phishing attacks. SlashNext just released its much-anticipated annual "State of Phishing Report for ...

Targeted Social Engineering on the Rise With Lowering Phishing-as-a-Service Costs

Targeted individuals were the most common victims of social engineering attacks in the second half of 2022 and the first half of 2023, according to researchers at AtlasVPN.

IT Admins Continue to Use Weak Passwords

In an analysis of web pages identified as admin portals, some incredibly weak passwords were identified – and some of them are going to really surprise you.