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

Over 200 Ransomware Strains Detected in Last Part of 2021

With the news focused on just a few key ransomware strains, it’s understandable to think you’ll never be a target. But newly-released data shows who’s doing the attacking and who’s being ...

KnowBe4 Named a Leader in the Winter 2022 G2 Grid Report for Security Awareness Training

The latest G2 Grid Report compares Security Awareness Training (SAT) vendors based on user reviews, customer satisfaction, popularity and market presence.

Business Email Compromise Attack Leads to Millions in Non-Profit Loss

A business email compromise attack at Illinois’s Office of the Special Deputy Receiver led to a loss of $6.85 million, Ray Long at the Chicago Tribune reports. Long describes the Office ...

Ransomware Attacks Could Result in Higher Cybersecurity Stocks

Ransomware attacks have been dominant for hackers. And according to Investor's recent article, this means good news for cybersecurity stocks.

Your KnowBe4 Fresh Content Updates from December 2021

Check out the 38 new pieces of training content added in December, alongside the always fresh content update highlights and new features.

Hive Ransomware-as-a-Service Races to the Top as Affiliates Breach 350 Organizations in Just 4 Months

A mere blip on the ransomware radar a quarter ago, the massive onslaught of attacks using Hive Ransomware demonstrates how dangerous the “as-a-Service” model really is.

Over 1200 Man-in-the-Middle Phishing Toolkits Designed to Intercept 2FA Found in the Wild

An academic partnership between Stony Brook University and Palo Alto Networks uncovered a massive use of tools that will steal authentication cookies mid-stream instead of credentials.

121 Brands Impersonated in Massive 91-Country Survey-Turned-Fraud Scam

With an estimated take of over $80 million a month, this scam uses new evasive tactics designed to make detection and investigation of these attacks difficult at best.

Obvious, but Probably Effective: Konni RAT Screensaver

A North Korean threat actor is targeting users in Russia with a New Year’s Eve-themed phony screensaver file, the Record reports. Researchers at Cluster25 spotted the activity, and say ...