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

The New Version of Qbot Trojan Steals Damn Near Everything, Hijacks Email Threads to Spread Infection

Originally seen all the way back in 2008, this banking trojan is continuously being developed. Its latest iteration is downright nasty and has already infected 5% of all organizations ...

Users Are Still Falling for Phishing Attacks. Want to Know Why?

With phishing and spear phishing so prevalent as the primary initial attack vector for malware, ransomware, and data breach attacks, why aren’t users getting wise.

[On-Demand] Think Like a Hacker: Learn How to Use Open Source Intelligence (OSINT) to Defend Your Organization

In today's digital age we are surrounded by massive amounts of data every day. This makes it ridiculously easy to gather shockingly detailed information about anyone… even your ...

[Heads Up] My Name Is Being Used In Criminal Identity Theft Attacks At The Moment

There is an old Dutch expression: "High trees catch a lot of wind". Well. once you get in the public eye there is definitely the effect you become a bigger target of identity theft. In ...

Contact Tracing: Real and Bogus

Scammers are posing as COVID-19 contact tracers and attempting to trick people into handing over their payment information, NPR reports. The scammers are using phone calls, texts, and ...

New Phishing Attack Uses a Compromised Vendor Account and Box to Elude Detection

Using legitimate email accounts is a great way for phishing emails to avoid being identified. Hosting malicious files on Box is another. Put them together and this attack reaches your ...

[On-Demand] Stump the Shark: Ask Roger Grimes Your Most Burning IT Security Questions!

Have you ever wanted to pick the brain of one of the most prolific IT security experts? Now is your chance! In our “Ask Me Anything” session with Roger Grimes, Data-Driven Defense ...

New Botnet Promising Free Shoes as Phishbait

Researchers at WhiteOps warn that a family of malicious Android apps are spreading a new ad-fraud botnet by promising free shoes and other products to users who install the apps. The ...

Organizations Aren’t Prepared to Recover from Cyberattacks on Active Directory

Cybercriminals are increasingly leveraging Active Directory to spread malware and even hold the organization for ransom. New data suggests you’re nowhere near ready for it.

Threat Group DeathStalker Uses PowerShell-based Implant Powersing to Hack into Financial Services Firms

Apparently focused on more intelligence gathering than taking direct malicious action against the organizations they compromise, this attack is filled with ingenuity.