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

New York State Education Department Warns of Phishing Campaign

Mar 1, 2021 9:55:30 AM By Stu Sjouwerman

The New York State Education Department (NYSED) released an advisory warning that scammers are impersonating its employees in an attempt to steal social security numbers and money. The ...

Phishing Attacks Double in 2020 While Carrying the Highest Month of Attacks on Record

Mar 1, 2021 9:32:45 AM By Stu Sjouwerman

The latest data from the Anti-Phishing Working Group (AWPG) shows massive gains in phishing attacks in Q4 of last year, quantifying the growth and setting the expectation of what’s to ...

UK Police Arrest SIM-Swapping Gang Responsible for the Theft of Over $100 Million in Cryptocurrency

Mar 1, 2021 9:32:30 AM By Stu Sjouwerman

This month the UK’s National Crime Agency (NCA) arrested eight suspects who targeted famous sports stars and musicians in the US and stole from victim’s bank accounts and crypto wallets.

Microsoft Dominates as the Most Impersonated Brand in Phishing Attacks

Mar 1, 2021 9:32:10 AM By Stu Sjouwerman

New data from phishing detection vendor Inky highlights which brands are most often used by cybercriminals in phishing attacks that will give them the edge needed for a successful phish.

[Heads Up] New Ryuk Ransomware Strain Now Worms Itself To All Your Windows LAN Devices

Mar 1, 2021 7:00:00 AM By Stu Sjouwerman

A new Ryuk strain has a worm-like feature that allows it to spread to all other devices on victims' local networks. It was discovered by the French CERT, their national cyber-security ...

New scary good deepfake videos of Tom Cruise show the threat to society is very real

Feb 27, 2021 9:55:36 AM By Stu Sjouwerman

InputMag wrote: "We are entering scary times. New deepfake videos of actor Tom Cruise have made their way onto TikTok under the handle @deeptomcruise, and boy do they look real.

[Heads Up] Ransomware and Phishing Attacks Are Not Going Away in 2021

Feb 26, 2021 8:59:06 AM By Stu Sjouwerman

According to three reports published last week, the bad guys have improved their popular tactics with phishing and ransomware attacks. The attacks involving fake COVID-19 scams and remote ...

The Dilemma: Best-of-Breed Stand-Alone or a Bundled Suite of tools?

Feb 26, 2021 7:05:55 AM By Stu Sjouwerman

Over the last few decades, survey after survey has shown that if IT Administrators had their way, the vast majority of them prefer a hand-picked set of best-of-breed point solutions over ...

Phishing Targets Industrial Control Systems

Feb 25, 2021 8:31:12 AM By Stu Sjouwerman

Phishing continues to be a primary initial access vector in cyberattacks against industrial control systems, according to researchers at Dragos. Out of the fifteen threat groups tracked ...

Bogus FedEx and DHL Phishbait

Feb 24, 2021 8:29:14 AM By Stu Sjouwerman

Researchers at Armorblox describe an ongoing phishing campaign that’s using phony FedEx and DHL shipping notifications as phishing lures.

CyberheistNews Vol 11 #08 [Eye Opener] Major Video Game Maker Refuses to Negotiate With Ransomware Cyber Criminals

Feb 23, 2021 9:28:23 AM By Stu Sjouwerman

More NHS-Themed COVID-19 Vaccine Phishing

Feb 23, 2021 8:21:48 AM By Stu Sjouwerman

A phishing campaign spoofing the UK’s National Health Service has surged its output, Infosecurity Magazine reports. Researchers at Mimecast warn that the attackers behind the campaign are ...

[HEADS UP] Texas Electric Company Warns of Scam Involving Losing Power

Feb 22, 2021 4:31:15 PM By Stu Sjouwerman

With the recent weather crisis in Texas, victims are afraid their power could be cut off. One electric utility company in Texas warns of scams that are threatening customers that their ...

The First Documented Russian Hack in...1981?

Feb 22, 2021 3:45:54 PM By Stu Sjouwerman

I'm reading "Active Measures: The Secret History of Disinformation and Political Warfare" by Thomas Rid and wanted to share this story with you which was new to me! It's warmly ...

U.K. Phishing Attack Targets Those Seeking the COVID-19 Vaccine

Feb 19, 2021 1:21:03 PM By Stu Sjouwerman

This latest phishing scam impersonates the UK’s National Health Service, telling recipients that are eligible for the vaccine in order to collect valuable banking and credit card details.

Be on the Watch for W-2 Phishing Scams!

Feb 19, 2021 1:20:58 PM By Stu Sjouwerman

With tax season just around the corner, this simple, yet effective social engineering theme is perfect to get users to respond to phishing attacks exactly the way the bad guys want.

The Cybersecurity Book You Should Read

Feb 18, 2021 2:00:57 PM By Stu Sjouwerman

Recently Cyber Defense Magazine released the top 100 cybersecurity books and the top recommended book is one of our Top Faves as well.

Popular Car Company Becomes Next Target in $20 Million Dollar Ransomware Attack

Feb 18, 2021 11:15:00 AM By Stu Sjouwerman

In an unfortunate situation popular car company Kia Motors America recently made headlines of a possible ransomware attack and the company was demanded to pay $20 Million ransom from a ...

KnowBe4 Named a January 2021 Gartner Peer Insights Customers’ Choice for Security Awareness Computer-Based Training Across Three Categories

Feb 18, 2021 10:54:52 AM By Stu Sjouwerman

KnowBe4 is excited to announce that we have been recognized as a Customers’ Choice across three categories in the January 2021 Gartner Peer Insights ‘Voice of the Customer’: Security ...

KnowBe4 Adds New Language Localization Options to its Security Awareness Training and Simulated Phishing Platform

Feb 18, 2021 10:00:00 AM By Stu Sjouwerman

We are excited to announce the availability of KnowBe4’s new localization options for the Admin Console and Learner Experience. You can now set your default language for three ...

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