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

Reminder: That Padlock Doesn’t Mean It’s Secure

We’ve mentioned this before, but the misconception has surfaced again, and it’s worth mentioning again. Looking for the padlock as a sign of a secure legitimate website isn’t an accurate ...

As You Read This, It's Cyber Monday. How To Avoid The Top 10 Security Threats

InfoSecBuzz asked a number of security experts for their advice on the top security threats and how to avoid them. These are specialists from Alienvault, Cylance, Cybereason, F5 Networks, ...

[Heads-up] Bad Guys Are Now Taking Over Email Inboxes Without Phishing Attacks

I found a great article in SecurityWeek by Alastair Paterson, the CEO of Digital Shadows. Could not have said it better myself, and he alerted everyone about an attack vector that was ...

75% of users reuse passwords across different accounts – this is up from 56% in 2014!

We’ve always known users are the weakest link in your security chain, but new report data from SailPoint shows just how bad users are behaving in 2018 – and how it affects security.

KnowBe4 Wins UK Security Excellence Awards!

Computing's Security Excellence Awards celebrate the achievements of the IT industry's leading security companies, solutions, products and personalities - those are keeping every other ...

Do Your Emails Make the Naughty or Nice List?

Black Friday is just as popular with hackers as it is with shoppers. So is Cyber Monday, for that matter.

More Details On New Bill That Poses Jail Time and Fines for Senior Executives of Victim Organizations

We covered this in the recent CyberheistNews, but now there is more detail.

CEOs are Prime Targets for Social Engineering Attacks

CEOs can be the weakest link in an organization’s security posture, according to Mimecast’s Matthew Gardiner. Carole Theriault talked to Gardiner last week on The CyberWire’s Hacking ...

Dutch audit finds Microsoft Office leaks confidential data

The diagnostics Microsoft Office collects from users should be a source of concern for any government CISO, according to a DPIA audit ComputerWeekly reported: "A report commissioned by ...

MSPs: Ransomware Downtime Costs SMBs 10x the Ransom

With 79% of MSPs indicating their clients have experienced ransomware attacks, every organization needs to take the financial impact of ransomware seriously.