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

Cyber Scammers Beef Up the Number of Fake Delivery Websites Just in Time for Christmas

Dec 27, 2023 10:58:02 AM By Stu Sjouwerman

Cybersecurity researchers at Group-IB have identified a single scam campaign leveraging over 1500 websites impersonating postal carriers and shippers leading up to Christmas this year.

CyberheistNews Vol 13 #52 [IRS Alert] Three Tips To Protect Against Tax Season Refund Scams

Dec 27, 2023 9:03:26 AM By Stu Sjouwerman

Nice! I Made it in The Top 25 Cybersecurity CEOs to Watch in 2024

Dec 26, 2023 2:36:38 PM By Stu Sjouwerman

The CyberExpress is a VC-backed cyber security news mag that provides the latest news and analysis about the information security industry. They published an article December 20, 2023 ...

The AI Threat: How America's 2024 Election Could Be Compromised

Dec 26, 2023 2:03:41 PM By Stu Sjouwerman

I found an interesting article at THE HILL that discusses the rising concerns about how AI might influence the upcoming U.S. 2024 elections.

SC Mag: "Attacks on critical infrastructure are harbingers of war: Are we prepared?"

Dec 22, 2023 10:42:30 AM By Stu Sjouwerman

I just found a great post by Morgan Wright, chief security advisor of SentinelOne. Here is a quick summary and a link to the full article is at the bottom. The recent attacks on water ...

Missing the Lock Icon in Chrome’s Address Bar? It’s a Move to Make You More Secure

Dec 21, 2023 1:30:00 PM By Stu Sjouwerman

In response to what Google calls “over trust” in the web address lock icon to indicate that a site is authentic and its’ communications are secure, they’ve swapped the lock out in an ...

Underground Cyber Crime Marketplaces are Now Showing Up on the Open Web

Dec 21, 2023 1:00:00 PM By Stu Sjouwerman

Marketplaces such as OLVX are shifting from the dark web to the open web to take advantage of traditional web services to assist in marketing to and providing access to new customers.

Interest in AI-Generated ‘Undressing’ Increases 2000% as it Becomes a Mainstream Online Business

Dec 21, 2023 12:30:00 PM By Stu Sjouwerman

The advent of non-consensual intimate imagery (NCII) as a monetized business on the Internet has shifted pornography into the realm of undressing anyone you like.

Cancer Center Patients Become Attempted Victims of Data Extortion

Dec 21, 2023 11:44:36 AM By Stu Sjouwerman

Cybercriminals of the lowest kind breached as many as 800,000 patients and then sent emails threatening to sell their data if they didn’t pay a fee to block it from selling.

“Mr. Anon” Infostealer Attacks Start with a Fake Hotel Booking Query Email

Dec 20, 2023 11:52:39 AM By Stu Sjouwerman

This new attack is pretty simple to spot on the front, but should it be successful in launching its’ malicious code, it’s going to take its victims for everything of value they have on ...

New Remote “Job” Scam Tells Victims They'll Get Paid For Liking YouTube Videos

Dec 19, 2023 11:23:07 AM By Stu Sjouwerman

Researchers at Bitdefender warn that scammers are tricking victims with fake remote job opportunities. In this case, the scammers tell victims that they’ll get paid for liking YouTube ...

Holiday Scams Include Thousands of Impersonation Phishing Domains per Brand

Dec 19, 2023 11:23:04 AM By Stu Sjouwerman

Midstride in this year’s holiday shopping, it’s important to realize just how many websites exist that impersonate legitimate online retailers. More importantly, your users need to know ...

CyberheistNews Vol 13 #51 Phishing Is Still the No. 1 Attack Vector, With Huge 144% Malicious URL Spike

Dec 19, 2023 9:00:00 AM By Stu Sjouwerman

Unique Malware Used in Cyber Attacks Increases by 70% in Just One Quarter

Dec 18, 2023 11:56:48 AM By Stu Sjouwerman

As more cybercriminal gangs continue to enter the game, the massive increase in unique types of malware means it will become increasingly difficult to identify and stop attacks.

[IRS Alert] Three Tips To Protect Against Tax Season Refund Scams

Dec 15, 2023 11:25:00 AM By Stu Sjouwerman

Urging taxpayers and tax professionals to be vigilant, the Internal Revenue Service (IRS) provides some simple guidance on how to spot new scams aimed at being able to file fake tax ...

Brand New BazarCall Phishing Campaign Abuses Google Forms

Dec 14, 2023 1:14:18 PM By Stu Sjouwerman

A new BazarCall phishing campaign is using Google Forms to send phony invoices, according to researchers at Abnormal Security.

As the Holiday Season Ramps Up, So Do Scams Impersonating the U.S. Postal Service

Dec 14, 2023 1:14:04 PM By Stu Sjouwerman

Taking traditional “delayed package” scams up a notch, new phishing and smishing attack campaigns are leveraging freemium DNS services to avoid detection by security solutions.

Phishing Is Still the No. 1 Attack Vector, With Huge 144% Malicious URL Spike

Dec 13, 2023 12:26:16 PM By Stu Sjouwerman

Analysis of nearly a year’s worth of emails brings insight into exactly what kinds of malicious content are being used, who’s being impersonated, and who’s being targeted.

Undercover Threat: North Korean Operatives Infiltrate U.S. Companies Through Job Platforms

Dec 13, 2023 12:26:08 PM By Stu Sjouwerman

Researchers at Nisos warn that North Korean threat actors are impersonating skilled job seekers in order to obtain remote employment at US companies.

Russia Weaponizes Israel-Hamas Conflict in Targeted Phishing Attack

Dec 12, 2023 12:18:27 PM By Stu Sjouwerman

Researchers at IBM X-Force are tracking a phishing campaign that’s using themes related to the Israel-Hamas war to deliver Headlace, a backdoor exclusively used by the suspected Russian ...

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