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

[Heads Up] This Ingenious Worm Phishing Campaign Is A Game-Changer In Password Theft And Account Takeovers

A few days ago in a Medium blog post, Craig Hays, a cybersecurity architect and bug bounty hunter described a recent phishing new type of attempt which turned out to become "the greatest ...

Phishing Attacks Continue to Grow More Sophisticated

Both criminal and nation-state threat actors have “rapidly increased in sophistication” over the past twelve months, according to Microsoft’s Digital Defense report. Microsoft found that ...

What’s the Information Stolen in a Phishing Attack Really Worth?

Once a scammer tricks their victim out of web credentials, credit card details, or online access to a bank account, the details collected are worth plenty by simply selling them on the ...

Spike in Emotet Attacks Against Government Agencies Seen Around the Globe in September

Attacks involving what is arguably the world’s most dangerous malware are on the rise, with reports from the cybersecurity agencies in Japan, New Zealand, and France.

The 2020 Election is Expected to be the Next Big Theme for Cyber Attacks

As the bad guys look for new ways to wreak havoc, cybersecurity experts at NTT global predict attacks pre-, during, and post-election should be expected.

KnowBe4 Earns 2020 Top Rated Award from TrustRadius

We are proud to announce that TrustRadius has recognized KnowBe4 with a 2020 Top Rated Award.

Phishing Campaign Goes After AT&T Employees’ MFA Codes

A phishing campaign is targeting AT&T employees and contractors with a well-crafted fake login page, according to Luke Leal at Sucuri. The phishing page is a near-exact replica of ...

Organizations Working From Home Opens Wider Target for Cybercriminals

With so many people working from home, more attackers are adapting their strategies to focus on employees as a way to bypass organizations’ defenses, FCW reports. During a webcast hosted ...

Chinese Antivirus Vendor Tied to Part of a Decade-Long Hacking Spree

Members of the hacking group “Apt41” were charged by the U.S. Department of Justice for hacking more than 100 victims globally with one of its members running AV vendor Anvisoft.