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

Vishing Gang Takes Victims for “Tens of Millions” Using Little More than Social Engineering

Dec 1, 2023 12:26:52 PM By Stu Sjouwerman

Czech and Ukrainian police have arrested six individuals responsible for a call center-based vishing scam designed to trick victims into thinking they were already victims of fraud.

The Israel-Hamas Conflict is the Latest Example of Phishing Attacks Taking Advantage of Current Events

Nov 30, 2023 11:12:12 AM By Stu Sjouwerman

Using something as simple as an attachment with an Israel/Hamas-related filename seems to be all it takes for new social engineering attacks disguised as donation confirmations.

Criminals Are Cautious About Adopting Malicious Generative AI Tools

Nov 30, 2023 11:12:08 AM By Stu Sjouwerman

Researchers at Sophos have found that the criminal market for malicious generative AI tools is still disorganized and contentious.

Your KnowBe4 Fresh Content Updates from November 2023

Nov 30, 2023 8:00:00 AM By Stu Sjouwerman

Check out the 49 new pieces of training content added in November, alongside the always fresh content update highlights, events and new features.

No One Knows How Online Pharmacy Company was Hit with a Data Breach Impacting 2.3 Million Customers

Nov 29, 2023 10:56:21 AM By Stu Sjouwerman

This is a cautionary tale of both how your data can legally end up in the hands of an organization you never intended and how victims can be largely left in the dark post-breach.

QR Code Phishing Campaigns on the Rise

Nov 29, 2023 10:55:48 AM By Stu Sjouwerman

There’s been a “precipitous rise” in QR code phishing campaigns in 2023, according to Matthew Tyson at CSO.

[Live Demo] Ridiculously Easy Security Awareness Training and Phishing

Nov 29, 2023 8:00:00 AM By Stu Sjouwerman

Old-school awareness training does not hack it anymore. Your email filters have an average 7-10% failure rate; you need a strong human firewall as your last line of defense.

Users Fall for Smishing Attacks 6-10 Times More Than Email-Based Attacks

Nov 28, 2023 12:20:35 PM By Stu Sjouwerman

With organizations heavily focusing on protecting the corporate endpoint, cybercriminals are switching focus onto mobile devices where users are more prone to fall for their social ...

Who Knew Neanderthals were so High-Tech?

Nov 28, 2023 12:20:27 PM By Stu Sjouwerman

Researchers at ESET describe various types of scams launched by users of Telekopye, a telegram bot that assists in crafting social engineering attacks.

CyberheistNews Vol 13 #48 Bloomberg Crypto Channel Hack Exposes Discord Users to Phishing Attacks

Nov 28, 2023 9:00:00 AM By Stu Sjouwerman

Initial Access Broker Activity Doubles in One Year’s Time

Nov 27, 2023 2:00:13 PM By Stu Sjouwerman

New data sheds light on just how active the Initial Access Broker (IAB) business is, and the growth uncovered doesn’t bode well for potential victim organizations.

Huntress Finds Business Email Compromise (BEC) Increases In Q3, 2024

Nov 27, 2023 2:00:05 PM By Stu Sjouwerman

Huntress has released a report finding that business email compromise (BEC) attacks have risen in the third quarter of 2023.

New Data Covers How the Retail Market is at Greater Risk of Industry-Specific Cyberthreats

Nov 22, 2023 4:04:08 PM By Stu Sjouwerman

A new analysis of the retail market’s threat landscape discusses the challenges faced by this industry and what threat tactics are being used to take advantage of retail’s cyber ...

Digital Skimming Increases by 50%, Just in Time for the Holiday Season

Nov 22, 2023 4:03:50 PM By Stu Sjouwerman

Security researchers identify growth in the use of an ongoing cyberskimming campaign that involves compromising legitimate website checkout code.

Phishing Attacks Expected to More Than Double During the Black Friday and Cyber Monday Shopping Week

Nov 22, 2023 2:13:32 PM By Stu Sjouwerman

Another day, another warning about holiday scams! Lookout Inc., a data-centric cloud security company, is warning employees and businesses that phishing attacks are expected to more than ...

Visa Warns of Increased Phishing Scams During Holiday Season

Nov 22, 2023 2:13:10 PM By Stu Sjouwerman

Visa Payment Fraud Disruption (PFD) expects phishing attacks to increase between November 2023 and January 2024. Findings in its Holiday Edition Threats Report outline the popular fraud ...

Old Bloomberg Crypto Account Bio Link Used in Discord Phishing Attack

Nov 21, 2023 4:25:38 PM By Stu Sjouwerman

Scammers used an outdated link found in an X (formerly Twitter) account belonging to Bloomberg Crypto to send users to a phishing site designed to steal Discord credentials, ...

73% of Organizations Affected by Ransomware Attacks Globally in 2023, According to Statista

Nov 21, 2023 4:25:14 PM By Stu Sjouwerman

I recently wrote about how 1 in 34 organizations globally has experienced an attempted ransomware attack. But that statistic doesn’t provide enough context around the impact felt by the ...

CyberheistNews Vol 13 #47 [Heads Up] FBI Warning: How Callback Phishing Makes It Past All Your Filters

Nov 21, 2023 9:00:00 AM By Stu Sjouwerman

With Expected Increases of Holiday Sales Comes Similar Expectations of More Cyber Scams

Nov 20, 2023 3:08:48 PM By Stu Sjouwerman

If increases in cyberattacks this year are any indication of what to expect in the next six weeks of holiday shopping, we should expect a massive uptick in holiday-related scams.

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