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

Travel-Related Phishing Scams and Websites Surge More Than 400%

Sep 22, 2021 4:04:22 PM By Stu Sjouwerman

Pent-up demand for traveling – both domestically and internationally – has driven an interest by cybercriminals to take advantage of those traveling to become phishing victims.

$1 Trillion Infrastructure Bill is the Catalyst for DOT-Impersonated Phishing Attacks Targeting Contractors

Sep 22, 2021 4:04:15 PM By Stu Sjouwerman

Offering targeted victim organizations an opportunity to bid on infrastructure projects, this scam seeks to harvest credentials using a new mix of tactics to evade detection.

Social Media Quizzes May Be Data Scrapers Building Victim Profiles

Sep 21, 2021 3:58:01 PM By Stu Sjouwerman

The seemingly benign quizzes asking personal details take advantage of individuals’ willingness to share and could be used to establish passwords, password hints, and more.

Kaspersky: Use of New QakBot Banking Trojan that Steals Emails Up 65%

Sep 21, 2021 3:57:53 PM By Stu Sjouwerman

Representing a new evolution of banking trojan, QakBot proves to be a formidable adversary against security defenses with its’ ability to steal emails – your users.

FBI Warns of Continued Ransomware Attacks Targeting the Food and Agriculture Sectors

Sep 21, 2021 3:57:43 PM By Stu Sjouwerman

Working to disrupt organizations involved with the United State’s food supply chain, ransomware gangs and their affiliates are the focus of the FBI’s latest warning to be vigilant.

CyberheistNews Vol 11 #37 [Heads Up] A New Phishing Attack on Microsoft 365 Users Leverages Open Redirects To Avoid Detection

Sep 21, 2021 9:41:41 AM By Stu Sjouwerman

Recent Cryptocurrency Scam Posed as “The Elon Musk Mutual Aid Fund”

Sep 21, 2021 9:34:46 AM By Stu Sjouwerman

A phishing campaign is pushing cryptocurrency scams posing as the “Elon Musk Mutual Aid Fund,” according to BleepingComputer. The emails have odd subject lines and content, but contain an ...

How to Run a Successful Security Awareness Training Program

Sep 20, 2021 1:31:11 PM By Stu Sjouwerman

As thinking about how to strengthen your security awareness training program is probably top of mind. Luckily, we've got you covered with helpful tips you can use to run a strong security ...

Over $100,000,000 Lost to Romance Scams in Seven Months

Sep 20, 2021 8:52:34 AM By Stu Sjouwerman

People in the US lost $133,400,000 to romance scams between January 1st and July 31st of 2021, according to the FBI. The average amount lost was in the tens of thousands of dollars. The ...

[NEW FEATURE] Admins Can Save and Schedule KnowBe4 Reports to Automatically Send on a Recurring Basis

Sep 17, 2021 8:46:05 AM By Stu Sjouwerman

We are excited to announce the availability of KnowBe4’s new ‘Save and Send’ Reporting feature. The 60+ predefined reports available in the KnowBe4 platform already give you a variety of ...

Enterprise Organizations Have as Much as an 85% Chance of Receiving a BEC Attack Every Week

Sep 16, 2021 2:07:40 PM By Stu Sjouwerman

Business Email Compromise is a multi-billion dollar business, representing 43% of all cybercrime last year. Despite it being dwarfed in the news by ransomware, it represents a growing ...

Probability of Experiencing a Vendor Email Compromise Attack Increases 96%

Sep 16, 2021 2:07:36 PM By Stu Sjouwerman

Vendor Email Compromise requires first taking control of a strategic email account within the victim organizations. According to new data, cybercriminals are getting really good at this.

New Phishing Attack on Microsoft 365 Users Leverages Open Redirects to Avoid Detection

Sep 16, 2021 8:55:52 AM By Stu Sjouwerman

The use of open redirects from legitimate domains makes phishing emails that much more believable and credible, obfuscating the dangerous nature of these attacks.

That's Not the US Department of Transportation, It's a Phishing Attack

Sep 16, 2021 8:55:37 AM By Stu Sjouwerman

A phishing campaign is impersonating the US Department of Transportation (USDOT), according to Roger Kay at INKY. The campaign is targeting infrastructure contractors who are eager to bid ...

Brute Force Attacks are on the Rise as June sees a 671% increase

Sep 16, 2021 8:55:00 AM By Stu Sjouwerman

With nearly one-third of all organizations targeted in a single week and just above one-quarter on the average, attempts to access externally facing resources is growing in popularity and ...

Researchers Discover Vulnerability Used for Deception and SSID Stripping

Sep 15, 2021 8:55:42 AM By Stu Sjouwerman

Researchers at AirEye have discovered a vulnerability in the way in which devices connect to wireless networks that could allow an attacker to trick a user into connecting to a malicious ...

U.S. Cyber Command General Promises 'Surge' To Fight Ransomware Attacks

Sep 15, 2021 7:08:10 AM By Stu Sjouwerman

The Hill reported 9/14/2021: "Gen. Paul Nakasone, the head of U.S. Cyber Command and director of the National Security Agency (NSA), is working to “surge” efforts to respond to the ...

Register for the Cybersecurity Virtual Summit KB4-CON EMEA Today!

Sep 15, 2021 6:00:00 AM By Stu Sjouwerman

We’re thrilled to host our first KB4-CON Cybersecurity Virtual Summit specifically for EMEA (Europe, the Middle East and Africa). At this one-of-a-kind event you’ll hear world-renowned ...

CyberheistNews Vol 11 #36 [EYE OPENER] The Number Of Daily Ransomware Attacks Skyrockets Nearly 1,000% In 2021

Sep 14, 2021 9:54:34 AM By Stu Sjouwerman

Social Media as Artillery Preparation for Spear Phishing

Sep 14, 2021 9:18:49 AM By Stu Sjouwerman

Researchers at ESTsecurity warn that a North Korean threat actor known as “Kumsong 121” is using compromised social media accounts to launch spear phishing attacks, the Daily NK reports. ...

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