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

Vishing Gang Takes Victims for “Tens of Millions” Using Little More than Social Engineering

Czech and Ukrainian police have arrested six individuals responsible for a call center-based vishing scam designed to trick victims into thinking they were already victims of fraud.

The Israel-Hamas Conflict is the Latest Example of Phishing Attacks Taking Advantage of Current Events

Using something as simple as an attachment with an Israel/Hamas-related filename seems to be all it takes for new social engineering attacks disguised as donation confirmations.

Criminals Are Cautious About Adopting Malicious Generative AI Tools

Researchers at Sophos have found that the criminal market for malicious generative AI tools is still disorganized and contentious.

Your KnowBe4 Fresh Content Updates from November 2023

Check out the 49 new pieces of training content added in November, alongside the always fresh content update highlights, events and new features.

No One Knows How Online Pharmacy Company was Hit with a Data Breach Impacting 2.3 Million Customers

This is a cautionary tale of both how your data can legally end up in the hands of an organization you never intended and how victims can be largely left in the dark post-breach.

QR Code Phishing Campaigns on the Rise

There’s been a “precipitous rise” in QR code phishing campaigns in 2023, according to Matthew Tyson at CSO.

Users Fall for Smishing Attacks 6-10 Times More Than Email-Based Attacks

With organizations heavily focusing on protecting the corporate endpoint, cybercriminals are switching focus onto mobile devices where users are more prone to fall for their social ...

Who Knew Neanderthals were so High-Tech?

Researchers at ESET describe various types of scams launched by users of Telekopye, a telegram bot that assists in crafting social engineering attacks.

Initial Access Broker Activity Doubles in One Year’s Time

New data sheds light on just how active the Initial Access Broker (IAB) business is, and the growth uncovered doesn’t bode well for potential victim organizations.

Huntress Finds Business Email Compromise (BEC) Increases In Q3, 2024

Huntress has released a report finding that business email compromise (BEC) attacks have risen in the third quarter of 2023.