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

[On-Demand] A Master Class on Cybersecurity: Roger Grimes Teaches Data-Driven Defense

Even the world’s most successful organizations have significant weaknesses in their cybersecurity defenses, which determined hackers can exploit at will. There’s even a term for it: ...

Your KnowBe4 Fresh Content Updates from February 2023

Check out the 24 new pieces of training content added in February, alongside the always fresh content update highlights, events and new features.

Financial Services Sector at Risk of More Significant Impacts of Email-Based Cyber Attacks

Financial services businesses are already in the sights of cybercriminals, and understanding how cyber attacks impact this sector specifically can help establish the need for improved ...

CISA's latest ransomware warning promotes fighting social engineering at the top of the document, once again

So, today CISA released another ransomware notice. The Cybersecurity and Infrastructure Security Agency is an agency of the United States Department of Homeland Security that is ...

[On-Demand] 5 Ways PhishER Saves You Time and Money

Time is the one resource you never get back. Cutting the amount of time between the moment your user reports a suspicious email and when your InfoSec team responds can mean the difference ...

Customer Care Numbers as Phishbait

Researchers at CloudSEK have published a report looking at fraudulent customer service phone numbers in India. The researchers found around 20,000 of these phone numbers targeting users ...

[Eye Opener] Businessweek: The Satellite Hack Everyone Is Finally Talking About

This morning, Bloomberg News pointed at a brand new article at BusinessWeek, one of their media properties. This is an excellent article that exposes the vulnerabilities when ...

Remote Workers Significantly Increase the Cost of Remediating Email-Based Cyberattacks as Costs Average $1 Million

With the average cost of the most expensive successful email attack at over $1 million, it’s necessary to begin to zero in on where the material sources of risk exist to keep these ...

NameCheap’s SendGrid Email Account Compromised, Used to Send Phishing Emails

Since phishing attacks need legitimacy to increase their deliverability, this latest twist shows how phishing scammers and hackers are working together to ensure phishing attacks continue.

Business Email Compromise Gang Gets Jail Time for Stealing Millions

An international cybercriminal operation responsible for millions of dollars in business email compromise (BEC) scams has finally been dismantled.