Stu Sjouwerman

Chief Executive Officer & President

Stu Sjouwerman (pronounced “shower-man”) is the founder and CEO 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.

Books

Cyberheist E-Book

Find all of Stu's books on Amazon

The Cost of a Data Breach is Expected to Rise by Two-Thirds Over the Next Five Years

Oct 8, 2019 7:00:00 AM By Stu Sjouwerman

The increase in attack effectiveness and remediation costs, along with new compliance fines are causing the cost of a data breach to rise significantly.

77% Of UK Workers Admit That They Have Never Received Any Form Of Cyber Security Training

Oct 7, 2019 9:53:15 AM By Stu Sjouwerman

77 per cent of UK workers admit that they have never received any form of training cyber skills training from their employer, according to a new study from Centrify, a leading provider of ...

So What Happens When Kevin Mitnick Meets Joe Perry?

Oct 7, 2019 7:40:24 AM By Stu Sjouwerman

So, Kevin Mitnick Meets Joe Perry from Aerosmith in Australia and someone asks him:

Disruption of Production Due To Malware at Rheinmetall Automotive Costs $4 Million Per Week

Oct 7, 2019 7:26:43 AM By Stu Sjouwerman

In a press release the very large EU company revealed: "The IT infrastructure of Rheinmetall Automotive plants in Brazil, Mexico and the USA has been affected by malware attacks since ...

Phishing Awareness: Considerations for Schools

Oct 7, 2019 7:14:14 AM By Stu Sjouwerman

Educating students and staff about phishing attacks is essential to protecting schools, according to Matt Britland, Director of IT and digital strategy at Alleyn’s School in London. In an ...

Amazon, Paypal, and Gmail Users are the Latest Target in a Sophisticated Multistage Phishing Attack

Oct 7, 2019 7:08:20 AM By Stu Sjouwerman

The latest attack, dubbed “Heatstroke” uses new target-specific phishing kits that may be sold as a “phishing-as-a-service” using new techniques to avoid leaving a trail.

More Than 2.2 Billion Stolen Account Credentials Have Been Made Available on the Dark Web

Oct 7, 2019 7:05:04 AM By Stu Sjouwerman

2019 is looking to be the year of the “data dump”, with more exposed records than any other year, empowering further credential stuffing attacks, according to McAfee.

Crime Sometimes Pays: $1.1M Recovered from U.K. Phishing Scammer 2 Years After Being Caught

Oct 7, 2019 7:00:53 AM By Stu Sjouwerman

We don’t often hear enough stories of cybercriminals being caught and paying back what they’ve stolen, but in the case of scammer Grant West, that’s exactly what has happened.

New Instagram Phishing Scam Uses Familiar (But Fake) 2FA Codes to Trick Victims

Oct 7, 2019 6:55:43 AM By Stu Sjouwerman

Scammers use familiar verification methods to establish credibility and lull the victim into a false sense of security to compromise Instagram accounts.

FBI Issues ‘High-Impact’ Ransomware Attack Warning—What You Need To Know

Oct 4, 2019 7:36:24 AM By Stu Sjouwerman

The FBI has issued a new warning that healthcare organizations, industrial companies, and the transportation sector are being targeted with ransomware. The attack methodologies continue ...

Cybersecurity Awareness Is Not Just For October!

Oct 4, 2019 6:59:02 AM By Stu Sjouwerman

By Joanna Huisman, KnowBe4's new SVP Strategic Insights & Research. I have a big birthday coming up, and as you can probably guess, I’m less than thrilled about it. I tell myself it’s ...

[VIDEO] CEO Stu Sjouwerman Interviewed by Dark Reading

Oct 3, 2019 4:15:00 PM By Stu Sjouwerman

This year at Black Hat 2019, our CEO Stu was interviewed by Dark Reading on regularly training users. Take a look at what we have in store in this video:

KnowBe4 Has A Blow-Out Third Quarter

Oct 3, 2019 12:56:12 PM By Stu Sjouwerman

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

Oct 3, 2019 6:32:09 AM By Stu Sjouwerman

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

Oct 2, 2019 4:44:32 PM By Stu Sjouwerman

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 ...

KnowBe4 Honored for Innovation in Security Awareness Training with 2019 CyberSecurity Breakthrough Award

Oct 2, 2019 8:50:47 AM By Stu Sjouwerman

CyberSecurity Breakthrough, a leading independent market intelligence organization that recognizes the top companies, technologies and products in the global information security market, ...

Ransomware Incident To Cost Danish Company A Whopping $95 Million

Oct 2, 2019 7:04:12 AM By Stu Sjouwerman

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

Oct 2, 2019 6:42:21 AM By Stu Sjouwerman

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

Oct 2, 2019 6:26:19 AM By Stu Sjouwerman

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

Oct 1, 2019 7:23:44 PM By Stu Sjouwerman

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 ...

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