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

Financial Institutions are the Most Affected by Phishing Attacks and Scams

Dec 5, 2023 11:38:56 AM By Stu Sjouwerman

New data shows how the overwhelming majority of phishing attacks on financial institutions dwarf every other industry sector by as much as a factor of 30-to-1.

PDFs: Friend or Phishing Foe? Don't Get Caught by the Latest Scam Tactic

Dec 5, 2023 11:38:52 AM By Stu Sjouwerman

Researchers at McAfee warn that attackers are increasingly utilizing PDF attachments in email phishing campaigns.

CyberheistNews Vol 13 #49 Top Four Security Tips for Cyber Safety on National Computer Security Day

Dec 5, 2023 9:00:00 AM By Stu Sjouwerman

How The Disinformation Machine Works, And How $400 Can Stop It

Dec 5, 2023 7:01:49 AM By Stu Sjouwerman

Specifically when wars break out, disinformation kicks into high gear. In the wake of the October 7 Hamas attack, the internet has been swamped with a deluge of disinformation. This ...

Phishing Kits Undergo an Evolution in Feature Set, Demand, and Branding

Dec 4, 2023 10:33:44 AM By Stu Sjouwerman

Now being commonly referred to as “Scama” – short for Scamming Method – these kits are being sold promoting highly advanced feature sets, turning the novice scammer into a pro.

Guarding Against the Rise of QR Code Phishing Attacks: How to Protect Yourself and Your Organization

Dec 4, 2023 10:33:41 AM By Stu Sjouwerman

In the ever-evolving landscape of cyber threats, scammers and hackers are relentless in exploiting every avenue of communication. From emails to texts, calls to QR codes, malicious actors ...

[On-Demand Webinar] Combatting Rogue URL Tricks: Quickly Identify and Investigate the Latest Phishing Attacks

Dec 4, 2023 8:00:00 AM By Stu Sjouwerman

Everyone knows you shouldn’t click phishy links. But are your end users prepared to quickly identify the trickiest tactics bad actors use before it’s too late? Probably not.

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 ...

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