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

Matrix Ransomware Uses a “Swiss Army Knife” of Tools to Infect, Compromise, and Spread

Since the days of EternalBlue, we’ve been concerned with malware spreading within a network. The latest iterations of Matrix Ransomware use a sophisticated list of embedded tools to do ...

Passwords and Their Encryption Are Easy Prey for Cyber Criminals in Account Takeover Attacks

Passwords serve as the foundation for most security today. But security vendor SpyCloud have recovered over 3.5 billion credentials, demonstrating just how insecure they really are.

[Heads up] Ransomware V2.0 Is Set to Resurge As Your Insurance Now Pays Off The Ransom

Holy Smokes! Ransomware may be poised to return as a top scourge for companies, as more and more of them pay up—it's actually their insurance company that makes the payment—after an ...

Triton is the world’s most murderous malware, and it’s spreading

In the summer of 2017, a petrochemical plant in Saudi Arabia experienced a worrisome security incident that cybersecurity experts consider to be the first-ever cyber attack carried out ...

Negative Reviews as Strong-Arm Collection for Bogus Bills

Anyone who depends upon good public opinion can be vulnerable to orchestrated bad word-of-mouth, especially in the form of online reviews.

RSA’s Best Social Engineering News

KnowBe4 was at RSA 2019 this year with two booths, in both the North and South Hall. The show was humongous as usual and a torrent of news was released. I was there and it was a challenge ...

Georgia county pays a whopping $400,000 to get rid of a ransomware infection

Officials in Jackson County, Georgia, paid $400,000 to cyber-criminals this week to get rid of a ransomware infection and regain access to their IT systems. The County hired ...

809 Million Records Exposed By Email Marketing Giant. No Bueno.

I'm suffering from Data Breach Fatigue, how about you?

Cyber Criminals use Domino Effect Chain Attacks to Leverage One Compromised Bank to Infect the Next

New details from international security company Group-IB show how cybercriminals are no longer looking to just steal from one bank. Instead they chain their attacks to improve their ...