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

Hurricane Season Means Disaster-Related Scams

June 1 marks the official start of the 2020 Atlantic hurricane season. The Cybersecurity and Infrastructure Security Agency (CISA) warns users to remain on alert for malicious cyber ...

Security Awareness is the Biggest Security Challenge for Remote Workforces

As the dust from enabling employees to work remotely has settles, new data from security vendor PulseSecure highlights where remote security has been – and still is – a challenge.

Why People Don't Learn (It's Not Always Their Fault)

IT and security managers often fail to understand how well their employees actually absorb cybersecurity training, according to a survey from Mimecast and Forrester Consulting. The survey ...

May Content Update: Including New When You Report, We Get Stronger Video Series

Check out new training content added to the KnowBe4 ModStore in the month of May.

Prediction: Ransomware Attacks to Spike as Employees Return to the Office

Because of the nature of ransomware attacks and the mass numbers of workers at home, anti-malware vendor Emisoft believes we’re going to see a rise once work returns to normal.

[HEADS UP] Cybercriminals in Australia Harass Recipients with Abusive Transaction Descriptions on Bank Statements

There are bad guys in Australia that have given away money in order to use social engineering and harass people with abusive transaction descriptions that appear in online banking ...

[BEWARE] New Report on Doxxing Exposes Cybercriminal Trends

A new threat intelligence report on doxxing, researched by cybersecurity experts at Kivu, reveals that the majority of attacks occur in the U.S., with companies in the consumer sector ...

[HEADS UP] More Australian Companies Hit By Mespinoza/Pysa Ransomware

Two more Australian companies have been hit by attackers using the Mespinoza/Pysa Windows ransomware, the same malware that was used to take down the Australian money management firm ...

Excel Macros Bypass Your Filters and Slip in Malware Payloads

Researchers at Lastline warn that attackers are increasingly utilizing Excel 4[.]0 macros to deliver malware while avoiding detection by security products. Excel 4[.]0 (XL4) macros were ...

Combatting Rogue URL Tricks: How You Can Quickly Identify and Investigate the Latest Phishing Attacks

Don't click phishy links. Everyone knows that. But are your end users prepared to quickly identify today's tricky tactics being used by the bad guys? Probably not. Cybercriminals have ...