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

USPS Surges to Take Top Spot as Most Impersonated Brand in Phishing Attacks

New data shows phishing attacks are deviating from the traditional focus on technology and retail sectors and are opting for alternate brands with widespread appeal.

[NEW GAME] The Inside Man: New Recruits Game

We released a new game, now available on the KnowBe4 Modstore. I played it myself and this is recommended for all Inside Man fans! "Mark Shepherd, The Inside Man himself, is recruiting a ...

4 out of 5 of Physicians Were Impacted by February’s Cyber Attack on Change Healthcare

A new survey of physicians details the devastating impact of the Change Healthcare cyber attack on the healthcare sector.

Kudos! CEO Reveals He Got Phished

The other day I was participating in a company’s employee meeting when the CEO revealed he had been “caught” that morning by a real phishing attack email.

Half of U.K. Businesses Experienced a Security Breach or Cyber Attack in the Last 12 Months

Analysis of cyber attacks targeting U.K. organizations highlights the effectiveness of social engineering attacks and the fact that businesses are missing the mark on how to stop it.

Russian Threat Actor FIN7 Targeting the Automotive Industry with Spear Phishing Attacks

The cybercriminal threat actor FIN7 is launching spear phishing attacks against the automotive industry in the United States, according to researchers at BlackBerry.

LastPass Warns of Deepfake Phishing Attempt

Password Manager software developer LastPass warned that one of its employees was targeted by a social engineering attack that used an audio deepfake which impersonated the company’s CEO. ...

AI Voice Cloning and Bank Voice Authentication: A Recipe for Disaster?

New advancements in generative AI voice cloning come at a time when banks are looking for additional ways to authenticate their customers – and they’re choosing your voice.

KnowBe4 Named a Leader in the Spring 2024 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) Software

We are excited to announce that KnowBe4 has been named a leader in the Spring 2024 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) for the PhishER platform for ...