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

KnowBe4 Has A Blow-Out Third Quarter

In the third quarter of 2019, KnowBe4 reached 55% growth over Q3 2018, increasing customer accounts to well over 28,000.

[HUMOR] Her Majesty Is Not Inviting You to Save the Realm

Daniel Phillips at BeInCrypto reports that a snail mail phishing campaign is impersonating the Private Secretary to Queen Elizabeth II and asking people to loan between £450,000 and ...

KnowBe4 Fresh Content and Feature Updates - September 2019

October is National Cybersecurity Awareness Month and to help celebrate, KnowBe4 has news to share with you, new content and feature updates along with a really cool security awareness ...

Ransomware Incident To Cost Danish Company A Whopping $95 Million

Catalin Cimpanu for ZDNet's Zero Day reported: "Demant, one of the world's largest manufacturers of hearing aids, expects to incur losses of up to $95 million following what appears to be ...

Ransomware Forces 3 Hospitals To Turn Away All But The Most Critical Patients

Arstechnica ran this story 10/1/2019: "Ten hospitals—three in Alabama and seven in Australia—have been hit with paralyzing ransomware attacks that are affecting their ability to take new ...

Copyright Infringement Warning as Phishbait

Scammers are using fake copyright infringement warnings to trick people into handing over their Instagram credentials, Naked Security reports. The warnings arrive in emails that appear to ...

North Koreans Spear Phish U.S. Victims With Social Engineering Hidden In Obscure Kodak FlashPix Format

A suspected North Korean threat actor has been sending spear phishing emails targeting US organizations, according to Prevailion researchers Danny Adamitis and Elizabeth Wharton. Adamitis ...

NetWire Remote Access Trojan Being Spread by Phishing Campaign

Researchers at Fortinet have come across a phishing campaign delivering a new version of the NetWire remote access Trojan (RAT). The phishing emails claim to contain invoices and ...

"Mishperceptions": The Five Most Common Phishing Myths Busted!

By Joanna Huisman, KnowBe4's new SVP Strategic Insights & Research. The bad guys know that the easiest way into your organization is through your employees. This is not an opinion. Of ...

Senate Passes Bill Aimed At Combating Ransomware Attacks

The U.S. Senate has approved new legislation aimed at helping government agencies and private-sector companies combat ransomware attacks. The legislation comes as local governments and ...