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

KnowBe4 Makes Third Place In Nationwide SMB Top Five Best Place To Work in Technology

Great Place to Work is a San Francisco-based global leader on high-trust, high-performance workplace cultures. Through their certification programs, Great Place to Work recognizes ...

Healthcare Ransomware Attacks – Don’t Be Part of the Statistics

Rebecca Wynn at securitycurrent.com wrote a great article on how not to become a ransomware statistic in health care: "In 2017, six of the top ten HIPAA breaches reported to the U.S. ...

Google’s Confusing Gmail Security Alert Looks Exactly Like a Phishing Attempt

Note: I got this too and had a similar reaction last week. Security researchers say the legitimate email is training people to have bad email hygiene. Richard De Vere, a security ...

Hospital Pays $55K Ransomware Demand DESPITE Having Backups

An Indiana hospital paid a ransom of $55,000 to get rid of ransomware that had infected its systems and was hindering operations last week. The infection took root last week, on Thursday, ...

KillDisk Fake Ransomware Hits Financial Firms in Latin America

A new version of the KillDisk disk-wiping malware has hit companies in the financial sector in Latin America, Trend Micro reported yesterday. Just like previous versions, KillDisk ...

Be like Bill Gates and Warren Buffett: If you’re not spending 5 hours per week learning, you’re being irresponsible

I just found a fabulous post on Quartz. “In my whole life, I have known no wise people (over a broad subject matter area) who didn’t read all the time — none. Zero.” — Charlie Munger, ...

[Heads-up] Unusual Ransomware Strain Encrypts Cloud Email Real-time

OK, here is something unusual and really scary. KnowBe4's Chief Hacking Officer Kevin Mitnick called me with some chilling news. A white hat hacker friend of his developed a working ...

How To Create A Security Culture in 2018

Ever heard: "If it was easy, everyone would do it" ? Creating a better security culture in your organization has a few challenges. Let's have a look at them, see how you can overcome ...

63% of organizations experienced an attempted ransomware attack in 2017

Interesting research by Enterprise Strategy Group: 63% of organizations experienced an attempted ransomware attack in 2017, with 22% reporting these incidents occurred on a weekly basis. ...