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

Ransomware Criminals Hack Dental Software Company And Take Hundreds Of Customers' Systems Hostage

Hundreds of dental practice offices in the US have had their computers infected with ransomware this week, ZDNet has learned from a source.

Why Are Insurance Companies Insisting To Pay Ransom For Ransomware Attacks?

This week, ProPublica published a report describing how insurance companies now prefer to fork over hundreds of thousands of dollars / pounds / Euros in ransom to minimize the detriment ...

Financial Phishing Campaigns on the Rise

More than 1900 new potential bank phishing sites were registered in the first half of 2019, according to researchers at NormShield. Based on the increase in new suspicious domains ...

Business Detections of Ransomware Attacks Have Grown by 365%

The latest data from Malwarebyte’s report Cybercrime Tactics and Techniques: Ransomware Retrospective shows businesses are at risk of ransomware attack now more than ever.

MegaCortex Ransomware goes Fully Automated, Putting Enterprises at Risk of Ransoms in the Millions

A new version of MegaCortex has been spotted, upgrading it from a manual, targeted form of ransomware, to one that can be spread and do damage enterprise-wide.

Microsoft, PayPal, and Facebook are the Top Three Impersonated Brands

Back in June, we discussed Vade Secure’s “Phisher’s Favorite” report for Q1 2019, which found that Microsoft had been the most impersonated brand used in phishing attacks for four ...

Bogus Suicide Prevention as a Scam

A lowlife Colorado bail bondsman named Matthew Marre repeatedly posed as a law enforcement officer to trick T-Mobile, Sprint, and Verizon into giving him GPS data for his targets’ phones, ...

SANS: Security Awareness Training is On the Rise

Providing users with Security Awareness Training is a critical part of a security strategy. According to the latest data from SANS, more organizations are using awareness training in 2019.

Even ‘Unsubscribe’ Emails Can Put the Organization at Risk

Social Engineering tactics seek to use any means that’s familiar to the intended victim – and unsubscribing is perceived as being so benign, it may just be the perfect way to fool your ...