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

[Scam Of The Week] Microsoft Warns To Look Out for This Massive Covid-19 Excel Phishing Attack

Microsoft this week warned about a massive phishing attack that started on May 12. The campaign sends emails that look like they are from the "Johns Hopkins Center", and they have an ...

[Heads Up] The COVID Remote Work Mandate Skyrockets "Work From Home" Training Enrollments

KnowBe4 was one of the first to warn first about the impending COVID phishing tsunami on Jan 31, 2020. The bad guys did not disappoint and went all-out, all cylinders firing, and pulled ...

Nearly Every Organization is More Concerned about Cybersecurity Than Before COVID-19

New data from security vendor Tripwire highlights how the shift to remote working has changed the face of cybersecurity for both the current work climate and the future.

Your Next Ransomware Attack May Require Two Payments!

In a case of adding insult to injury, a new strain of ransomware is looking for one payment to decrypt, and a second payment to not publish stolen files.

Preying on the Unemployed

An SMS phishing campaign has been exploiting the COVID-19 crisis by spoofing the website of a job placement agency, the New York Daily News reports. The scammers set up a website that ...

Biases People Take Home With Them

Employees will naturally follow their cognitive biases unless organizations proactively engage them in security processes, according to Georgia Crossland, a Ph.D. researcher at Royal ...

Scammers Exploit Rollout of COVID-19 Contact-Tracing Apps

An SMS phishing campaign is telling people they’ve come into contact with someone who’s contracted COVID-19, Computing reports. The UK’s Chartered Trading Standards Institute (CTSI) ...

Dutch Online Retailer Wehkamp Loses 144,000 Euros in Bankruptcy Business Email Compromise

Cyber criminals successfully gained access to email traffic between bankruptcy trustees and Wehkamp – one of the biggest online retailers in The Netherlands – writes RTL Z. Employees of ...

That Email from President Trump? Yeah, That’s a Phishing Scam

New phishing scams impersonating President Trump and Vice President Pence are designed to install malware or be the start of an extortion scam.

World's Largest Sovereign Wealth Fund Falls For $10m Social Engineering Attack

The Norwegian Investment Fund has been swindled out of 10 million dollars by fraudsters who pulled off a social engineering attack that the Norfund called "an advanced data breach" but ...