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

[New Research] KnowBe4's Report is a Call to Action for Global Organizations to Improve Their Security Culture

We’re thrilled to announce the release of the 2024 Security Culture Report, which dives deep into how security measures affect organizations and the way employees act and feel at work.

The Average Malicious Website Exists for Less Than 10 Minutes

A new Chrome update brings to light Google findings about malicious websites that have serious implications on detecting malicious links, spoofed brands and the use of legitimate web ...

Cloud-Conscious Cyber Attacks Spike 110% as Threat Groups Sharpen their Attack Skills

New data shows increased expertise in leveraging and exploiting cloud environments.

FBI: Losses Due to Cybercrime Jump to $12.5 Billion as Phishing Continues to Dominate

The FBI’s Internet Crime Complaint Center (IC3) newly-released Internet Crimes Report provides an unbiased big picture of the cyber crimes that were the most used and most successful.

Ransomware Group “RA World” Changes Its’ Name and Begins Targeting Countries Around the Globe

The threat group "RA World" (formerly RA Group) has shifted from country-specific ransomware attacks to include specific industries via a new - not previously seen - method of extortion.

[Heads-Up] Phishing Campaign Delivers VCURMS RAT

Researchers at Fortinet are tracking a phishing campaign that’s distributing a new version of the VCURMS remote access Trojan (RAT).

[Heads Up] Reinforce Your Defenses Against Rising Supply-Chain Cyber Threats

James Rundle at The Wall Street Journal today reported that in response to escalating supply-chain cyberattacks, companies are intensifying their scrutiny over suppliers to protect ...

Phishing Tops 2023’s Most Common Cyber Attack Initial Access Method

New analysis shows that the combination of phishing, email, remote access, and compromised accounts are the focus for most threat actors.

State-Sponsored Russian Phishing Campaigns Target a Variety of Industries

Researchers at IBM X-Force are monitoring several ongoing phishing campaigns by the Russian state-sponsored threat actor ITG05 (also known as “APT28” or “Fancy Bear”). APT28 has been tied ...