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

[On-Demand] Your Organization Through the Eyes of an Attacker

The bad guys are out there, watching and waiting for an opportunity to strike. They are gathering information about your organization and users, devising the perfect plan to infiltrate ...

[Announcement] KnowBe4 ModStore: New Series "Security Snapshots" from Twist & Shout

They've made you laugh. They've made you cry. You know and love them! Twist & Shout are here once again with a series of 12 stand-alone security micro-dramas! These Security Snapshots ...

Bitcoin Millionaire Loses $16 Million to a Compromised Wallet and Simple Social Engineering

This brief tale of misfortune shows how unpatched software and letting your guard down – especially when $16 million is on the line – can be all that’s needed for a successful scam.

Joint Cybersecurity Advisory Outlines Approaches to Discovering and Remediating Attacks

This newly-released report is the result of a collaborative effort by cybersecurity authorities in Australia, Canada, New Zealand, the United Kingdom, and the United States.

Crowdstrike: "More Cyberattacks in the First Half of 2020 Than in All of 2019"

According to a recent study conducted by cybersecurity firm CrowdStrike, recent threat activity throughout its customers’ networks has shown more intrusion attempts within the first half ...

When Phishing And Disinformation Meet

The Insider reported that QAnon is co-opting a USPS phishing scam, and claim the Vishing text messages are linked to human trafficking. "A viral [text] phishing scheme is targeting people ...

How to Become a Harder Target From Malicious Threat Actors

The US Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA) has issued an advisory regarding threat actors associated with China’s Ministry of State ...

Security Awareness Advocate Kai Roer Discusses the 2020 Security Culture Report

Our security awareness advocate Kai Roer recently did an interview with Cybercrime Magazine. Kai discusses the history of CLTRe (now KnowBe4 Research) and his background on security ...

High-Profile Caper Spawns Phishing Campaign

A phishing campaign is using the recent Twitter hack as phishbait, HackRead reports. In mid-July, hackers used social engineering against Twitter employees to gain access to more than a ...