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

Fake Scandal Video Serves Malware

Researchers at Trustwave warn that a phishing campaign is attempting to deliver malware via a file for a fake scandal video with 'Trump' included in the title. The file is a Java Archive ...

SolarWinds Hit With Class-Action Lawsuit Following Orion Breach

SolarWinds and some of its executives have been accused of lying to shareholders about its security. In a class-action lawsuit filed by shareholders Solarwinds, outgoing CEO Keven ...

[Heads Up] Was SolarWinds Really A Daisy Supply Chain Attack?

The NYT just reported the next revelation regarding the SolarWinds hack. The Russian FSB may have piggybacked on a tool developed by JetBrains, which is based in the Czech Republic.

KnowBe4 Wins Multiple 2021 "Best of" Awards From TrustRadius

KnowBe4 is proud to be recognized by TrustRadius in the first-ever “Best of” Awards for usability, customer support, and feature set in the Security Awareness Training software category.

PayPal Phishing: “Your Account is Limited”

A PayPal smishing campaign is trying to trick users into handing over their credentials and personal information, BleepingComputer reports. The text messages state, “PayPal: We've ...

[HEADS UP] Australian Cyber Security Centre is Being Used in Malware Campaign

A warning was recently issued by the Australian Government of cybercriminals impersonating the Australian Cyber Security Centre (ACSC) to infect with malware.

Welcome to The InfoSec Neighborhood!

It looks like KnowBe4 has a new cybersecurity “neighbor” here in Tampa, helping create an even larger presence of tech companies headquartered in Florida.

It Looks Like Chinese Cybercriminal Group APT27 May Be Shifting to Ransomware Attacks

The perceived change in cyberattack tactics for this well-known group of hackers may mean more trouble as APT27’s talents usually reserved for espionage are focused on ransomware.

A Close Look at a Banking Scam

A phishing campaign is targeting customers of Portugal’s Banco Millennium BCP (Portuguese Commercial Bank), according to Tomas Meskauskas at PCRisk. The emails inform recipients that ...

[On-Demand Webinar] Malicious Browser Notifications: The New Phishing Attack Not Blocked by Your Current Cyber Defense

Cybercriminals have added a devious weapon to their attack arsenals - malicious browser notifications. And the worst part is they’re not blocked by any current cyber defense. These ...