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

Three-Quarters of Vulnerabilities Used in Ransomware Attacks Were Discovered Before 2020

Despite a lot of focus on phishing and remote access as initial access vectors, new data shows the use of vulnerabilities is not only on the rise, but simply isn’t being properly ...

Half of all Sites Used in Phishing Attacks Impersonate Financial Institutions

As credential theft-focused phishing attacks continue to assist initial access brokers, new data shows banking fraud continues to be a material threat to individuals and businesses alike.

Google Phishing Pages Jump 1,560% YoY

Vade has released a report looking at phishing trends in 2022. The researchers say the top three most-impersonated brands last year were Facebook, Microsoft, and Google.

Employees Are Feeding Sensitive Biz Data to ChatGPT, Raising Security Fears

Robert Lemos at DARKReading just reported on a worrying trend. The title said it all, and the news is that more than 4% of employees have put sensitive corporate data into the large ...

[SCAM OF THE WEEK] Is ChatGPT Your Next Financial Advisor?

ChatGPT, an artificial intelligence (AI) chatbot created by OpenAI, has risen in popularity since its release last year. Now, cybercriminals are using ChatGPT’s popularity to lure you ...

CyberheistNews Vol 13 #10 [Eye Opener] BusinessWeek: The Satellite Hack Everyone Is Finally Talking About

CyberheistNews Vol 13 #10 | March 7th, 2023 [Eye Opener] BusinessWeek: The Satellite Hack Everyone Is Finally Talking About This week, Bloomberg News pointed at a brand-new article at ...

Three out of Four Organizations Have Experienced a Successful Email-Based Attack as Impacts Increase

New data shows just how impactful these attacks are, with 98% of victim organizations reporting some form of impact from email-based cyber attacks.

Coping With “Double-Extortion” Royal Ransomware

The US Cybersecurity and Infrastructure Security Agency (CISA) and the FBI last week issued a joint advisory on Royal ransomware. Royal is noteworthy for its ability to disable various ...

Ransomware Attacks on Industrial Infrastructure Climb 87% Despite Security Improvements to ICS Environments

Since the goal of ransomware is to initially disrupt operations, the targeting of industrial control systems has been an increasing focus for specific ransomware groups.

Executive Impersonation Business Email Compromise Attacks Go Beyond English Worldwide

Despite hearing mostly about BEC attacks in English-speaking countries, analysis of new attack groups highlight the threat of these kinds of attacks in other languages.