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

Phishbait Follows Current Events

Crisis draws opportunistic criminals, and the Kaseya ransomware incident is no different. Kaseya’s updates on the incident have included repeated warnings not to be taken in by emails or ...

KnowBe4 Fresh Content Updates from June

Here are important fresh content updates to share with you that happened in the month of June.

[On-Demand Webinar] Implement DMARC the Right Way to Keep Phishing Attacks Out of Your Inbox

DMARC, SPF, and DKIM are global anti-domain-spoofing standards, which can significantly cut down on phishing attacks. Implemented correctly they allow you to monitor email traffic, ...

Ransomware Attacks from Within Russia So Impactful, U.S. Government Says They Will Take Action If Russia Won’t

In light of recent ransomware attacks, the White House Press Secretary Jen Psaki stated this week that the Russian government needs to address ransomware groups stemming from Russia.

How REvil Works: A Look Inside the World’s Most Famous Ransomware-as-a-Service

With well-known companies impacted by REvil in every sector, including tech, it’s time to get a better understanding of who they are and what makes their ransomware so successful.

Social Engineering and Organizational Culture

Consistent awareness training is necessary to fend off phishing attacks, according to Keatron Evans, a principal security researcher, instructor, and author with Infosec. In an interview ...

Lazarus Group Continues Targeting Defense Contractors

North Korea’s Lazarus Group has been launching phishing campaigns against more defense contractors and engineering companies, according to researchers at AT&T Alien Labs. The ...

87% Increase in Social Engineering Scams During the First Quarter of 2021 Compared to Q1 2020

There was an 87% increase in social engineering scams during the first quarter of 2021 compared to Q1 2020, according to Ayelet Biger-Levin from BioCatch. In an article for The Paypers, ...

Your The Majority of Business Email Compromise Phishing Attacks Initially Go for Credentials, Not Money

With BEC attacks historically trying to get to the “committing fraud” part as quickly as possible, new data shows threat actors are taking their time, looking for a larger payoff.

It Was Only a Matter of Time: The Ransomware Ecosystem Has Given Birth to VC Investors

Security firm LIFARS confirms that cybercriminals are acting like venture capital investors, funding startup cybercriminal organizations, such as Darkside Ransomware.