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

Kiss Your Privacy Goodbye. Exactis Leaks A Database With 340 Million Personal Data Records

Whoa Nellie. Here is the ultimate spear phishing data trove. WIRED reported: "Earlier this month, security researcher Vinny Troia discovered that Exactis, a Palm Coast, Florida-based data ...

When Ransomware Attacks Triple, You Need to Pay Attention!

Security vendor SonicWall just released their latest report on cyberattack volumes… and the numbers are staggering.

Do Employees Open Your Network to the Bad Guys by Using Hacked Passwords?

A whopping 25% of employees are using the same password for all logins. What if that password is available on the dark web? A massive amount of passwords are compromised due to data ...

Don't Underestimate The Economic Side of Russia's Cyber Warfare

I just ran into an excellent article by Boris Zilberman, deputy director of congressional relations and a Russia analyst at the Foundation for Defense of Democracies. It was posted at The ...

Learn From Your Mistakes: Organizations Simply Aren’t Ready

Even with the increase in threats and actual experienced attacks, executive and IT teams alike feel like they’re simply not ready for the next attack.

[Heads-up] Employees Sue Company For W-2 Phishing Scam. Federal Court Decides Triple Damages

Imagine my surprise when I saw a picture of myself in the blog of large North Carolina Law firm Poyner Spruill. It was all good though. They had picked up an example of a real W-2 ...

Exclusive Interview with Kevin Mitnick Ask Me Anything [VIDEO]

KnowBe4's Chief Hacking Officer Kevin Mitnick sat down with our team for an exclusive interview where we could ask him anything… We thought you’d like to hear his answers, too. Ever ...

The FBI recently published its 2017 Cybercrime Report highlighting trends and statistics

The FBI recently published its 2017 Internet Crime Report highlighting trends and statistics compiled by the FBI’s Internet Crime Complaint Center (“IC3”) during 2017. The report compiles ...

New Sleeper Strain of SamSam Ransomware Bypasses AV And Stays Hidden On Your Network

The ransomware strain that crippled several cities and school districts in the U.S. earlier this year is back with more tricks up its sleeve to avoid detection. If you haven’t heard of ...