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

The U.S. Government Blaming Cyber Attacks on Russia May Cost One Business $100 Million

Governments attributing cyberattacks to specific countries usually ends in nothing more than a line in a news story. But sometimes these kinds of claims can have unforeseen consequences.

[Heads-up] Are Any Of Your Users Exposed In This Brand New Humongous Data Breach?

Troy Hunt, the site admin of Have I Been Pwned just released some disconcerting news. A new data breach of humongous proportions has just been made public, we are talking astronomical ...

What Does KnowBe4 Think About Link Re-writing?

This is a question that was asked by a customer who was implementing our Phish Alert Button so that employees could report phishy emails.

Modern Ransomware Goes After Data Backups

Ransomware is using a variety of methods to reduce or nullify the effectiveness of data backups, writes Maria Korolov at CSO. Restoring from a backup is one of the best strategies that ...

The Top 10 Big Risk Picture From Way High Up

What keeps you up at night? These are the biggest risks facing our world in 2019. Top world leaders were surveyed for the latest edition of the World Economic Forum's Global Risks Report. ...

Increase in Office 365 Attacks and Data Breaches Should Be Expected as We Approach the 2019 Tax Season

Experts warn of uptick in phishing attacks against businesses leveraging Office 365 as the tax season begins, tensions run high, and opportunities to trick off-guard users will be plenty.

[THIS IS NOT A DRILL] KB4 Training Template Used As Phishing In The Wild

It's a known fact that once your market share is big enough, the bad guys are going after you. Used to be that viruses and malware were only developed for Windows, but when Apple got to ...

Brand-New Tool: Password Exposure Test Identifies Risky Users

Cybercriminals are constantly coming out with new ways to hack into your network and steal your organization’s confidential information. According to the 2018 Verizon Data Breach Report, ...

Awareness Training is the Key to a Culture of Security

Here’s a follow-up to an earlier post of ours, with amplification of points well-worth making.