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

75% of Organizations Have Experienced a Deepfake-Related Attack

As generative AI evolves and becomes a mainstream part of cyber attacks, new data reveals that deepfakes are leading the way.

Crooks are Sending Halloween-Themed Phishing Emails

Halloween-themed spam and phishing emails have surged over the past two months, with a significant increase beginning in October, according to researchers at Bitdefender.

4 out of 10 Phishing Emails Are Sent From a Compromised Email Account

Analysis of phishing emails in the second quarter of this year paints a picture of what security teams and vigilant recipients should expect from modern phishing attacks.

Threat Actors Compromise Valid Accounts Via Social Engineering

Phishing remains a top initial access vector for cyberattacks, according to researchers at Cisco Talos.

Cyber Attack Tools Now Being Used To Help Phishing Pages Avoid Detection

Cybercriminals are offering tools to help phishing pages avoid detection by security tools, according to researchers at SlashNext.

Cybersecurity Budgets Are Increasing, but Security Leaders Don’t Think It’s Enough

Despite the belief that today’s SOC should be doing the lion’s share of protecting an organization, new data shows reliance on more than just security teams is needed.

[2025 Is Too Late] - European Companies Must Act Now Against AI-Powered Cyber Threats

European Organizations Can't Afford to Wait: Critical Cybersecurity Threats Demand Immediate Action

New Research: 140% Increase in Callback Phishing

Researchers at Trustwave observed a 140% increase in callback phishing attacks between July and September 2024. Callback phishing is a social engineering tactic that involves emails and ...

Ransomware Gang Attack Tactics Have Shifted

A recent analysis of the ransomware group Meow raises the notion that groups are evolving from using encryption as a tactic to more profitable and cost-effective methods.