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

Fraud Attacks Targeting the Mid-Market Organization Increase 129%

Oct 28, 2020 8:29:07 AM By Stu Sjouwerman

New data from U.K. cyberinsurer Beazley highlights the growing trend of mid-market organizations being the target of social engineering attacks and fraud.

New Qbot Phishing Attack Pretends to be Windows Defender to Trick Its Victims

Oct 28, 2020 8:24:39 AM By Stu Sjouwerman

One of the most dangerous pieces of malware is back with a new campaign that takes advantage of social engineering techniques to look convincing enough to fool your users.

Researchers Discover Most Microsoft 365 Admins Don't Enable Multi-Factor Authentication

Oct 27, 2020 12:31:02 PM By Stu Sjouwerman

Researchers from CoreView recently discovered that 97% of all total Microsoft 365 users do not utilize multi-factor authentication (MFA). A staggering 78% of Microsoft 365 admins do not ...

"Berserk Bear", The Russian Hackers Playing ‘Chekhov’s Gun’ With US Infrastructure

Oct 27, 2020 10:29:34 AM By Stu Sjouwerman

In an advisory warning published last week by the Department of Homeland Security’s Cybersecurity and Infrastructure Security Agency (CISA), the government notified the public of a ...

Could A Botched Ransomware Attack Have Caused The Massive Mauritius Oil Spill?

Oct 27, 2020 10:05:53 AM By Stu Sjouwerman

I found a super interesting and at the same time scary article at Forbes by Nishan Degnarain about the cyber vulnerabilities of these massive oil tankers and container ships. It's ...

CyberheistNews Vol 10 #44 [FUN DEPARTMENT] The Ultimate Cyber Security Tip

Oct 27, 2020 9:31:52 AM By Stu Sjouwerman

[HEADS UP] Remote Workers Disregard Security Awareness Training

Oct 27, 2020 8:55:41 AM By Stu Sjouwerman

According to new research from Mimecast, remote workers are increasingly putting their organizations at risk by failing to follow security awareness training best practices.

Couple Avoids Becoming a Victim to Publishers Clearing House Scam

Oct 27, 2020 8:32:57 AM By Stu Sjouwerman

An elderly couple in Tennessee avoided falling victim to a scam by recognizing the signs of social engineering, WREG reports. Kay and Bill Pritchett received six different phone calls ...

[HEADS UP] Cybercriminals Threaten Patients in Clinic Data Breach

Oct 26, 2020 5:56:32 PM By Stu Sjouwerman

In a recent report by BBC News, patients in a large clinic in Finland have been blackmailed using social engineering after their data was stolen.

[HEADS UP] Fraudsters are Exploiting High Demand Air Freight

Oct 26, 2020 8:33:52 AM By Stu Sjouwerman

Scammers are exploiting the high demand for air freight brought on by the COVID-19 pandemic, the Loadstar reports. Charter veteran Steve Manser told the publication that fraudsters are ...

[INFOGRAPHIC] 20 Ways to Build Your Security Fortress From Anywhere

Oct 26, 2020 7:00:00 AM By Stu Sjouwerman

Whether you and your users are working remotely or in the office, it’s essential to be aware of cybersecurity threats. Here at KnowBe4, we’re committed to help your users make smarter ...

Members of the Cybercrime Group Responsible for NotPetya Indicted by U.S. Government

Oct 23, 2020 5:18:05 PM By Stu Sjouwerman

Six members of the Russian hacker group known as Sandworm who have carried out some of the most well-known cyberattacks in the last 6 years appear to have been brought to justice.

REvil Ransomware Gang Flexes Its Hiring Muscle With a $1 Million Deposit on a Hacking Hiring Website

Oct 23, 2020 5:13:35 PM By Stu Sjouwerman

Nothing says ransomware is a profitable business more than throwing down a million dollars in an attempt to attract and hire the most talented hackers on the planet.

[HEADS UP] Cybercriminal Sells Info on 186 Million U.S. Voters

Oct 23, 2020 12:56:46 PM By Stu Sjouwerman

In a recent report by NBC News, cybersecurity company TrustWave found a bad guy selling voter registration data on 186 million Americans.

[HEADS UP] Australia Warns Citizens of JobKeeper Phishing Email

Oct 22, 2020 9:45:43 AM By Stu Sjouwerman

The Australian Taxation Office has advised Australians to delete a particular email and to not provide any personal information.

Cybersecurity Awareness Month Weekly Tip: Social Media Safety

Oct 22, 2020 8:41:21 AM By Stu Sjouwerman

Each week during Cybersecurity Awareness Month, we’re going to be sharing in-depth weekly cybersecurity tips from our informative evangelists to help your users make smarter security ...

Middle Management is the Next Target for Phishing Attacks

Oct 22, 2020 8:23:11 AM By Stu Sjouwerman

Mid-level managers need to be particularly wary of targeted phishing attacks, according to Jenn Gast at INKY. Gast explains that criminals can easily conduct open-source research on a ...

[On-Demand] Lessons Learned: An IT Pro’s Experience Building his Last Line of Defense

Oct 22, 2020 7:00:00 AM By Stu Sjouwerman

This is the true story of an IT Manager who was tired of his users clicking everything and wanted to teach them a lesson… in a good way.

Notes on Social Engineering, and What to Do About It

Oct 21, 2020 8:24:50 AM By Stu Sjouwerman

Phishing attacks are growing in prevalence during the pandemic, according to David Dufour, Vice President of Engineering and Cybersecurity at Webroot. Webroot’s recent threat report ...

[HEADS UP] Russian Intelligence Officers Charged With Hacking

Oct 20, 2020 10:21:51 AM By Stu Sjouwerman

In a recent article by the Wall Street Journal, U.S. prosecutors charged six Russian intelligence officers who are accused of engaging in the most destructive cyber attacks of recent ...

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