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

Dodging Digital Deception: How to Spot Fake Recruiters and Shield Your Career Search from Phishing Scams

Mar 12, 2024 9:28:58 AM By Stu Sjouwerman

Scammers are impersonating job-seeking platform Dice with phony employment opportunities designed to steal victims’ information.

Generative AI Results In 1760% Increase in BEC Attacks

Mar 12, 2024 9:24:38 AM By Stu Sjouwerman

As cybercriminals leverage tools like generative AI, making attacks easier to execute and with a higher degree of success, phishing attacks continues to increase in frequency.

CyberheistNews Vol 14 #11 Microsoft and OpenAI Team Up to Block Threat Actor Access to AI

Mar 12, 2024 9:00:00 AM By Stu Sjouwerman

The European Union's Unified Approach to Cybersecurity: The Cyber Solidarity Act

Mar 11, 2024 9:12:04 AM By Stu Sjouwerman

The construction of a more cyber resilient European Union (EU) took a remarkable step forward this past week as negotiators from the European Parliament and the European Council reached a ...

FBI's 2023 Internet Crime Report Highlights Alarming Trends on Ransomware

Mar 11, 2024 9:12:00 AM By Stu Sjouwerman

The specter of cybercrime continues to grow, with losses soaring to $12.5 billion in 2023, according to the recently released Internet Crime Report by the FBI's Internet Crime Complaint ...

AI and Ransomware Top the List of Mid-Market IT Cyber Threats

Mar 7, 2024 3:22:08 PM By Stu Sjouwerman

A recent report reveals a significant discrepancy in the priorities of mid-market IT departments when it comes to addressing cyber threats. It's somewhat ironic that IT professionals find ...

European Diplomats Targeted With Phony Invitations to a Wine-Tasting Party

Mar 7, 2024 3:21:56 PM By Stu Sjouwerman

Researchers at Zscaler observed a cyberespionage campaign that targeted European diplomats with malicious PDFs disguised as invitations to a wine-tasting party hosted by the Ambassador of ...

[On-Demand] Customer Spotlight: MESA’s Strategy for Building Strong Security Culture and Email Defense

Mar 7, 2024 8:55:00 AM By Stu Sjouwerman

In a world where digital threats grow more sophisticated by the day, gaining firsthand knowledge from those who have successfully bolstered their organization's defenses is invaluable.

New Research: Spike In DNS Queries Driving Phishing and Cyber Attacks

Mar 6, 2024 2:24:15 PM By Stu Sjouwerman

New analysis of DNS queries shows material growth in phishing, malware and botnets and offers insight into how many threats the average person experiences.

Chicago Man Sentenced to Eight Years in Prison for Phishing Scheme

Mar 6, 2024 2:24:11 PM By Stu Sjouwerman

A 30-year-old man from Chicago, Joseph Alexander Valdez, has been sentenced to eight years in prison for conducting a Snapchat phishing scheme that victimized more than 700 women, CBS ...

Microsoft and OpenAI Team Up to Block Threat Actor Access to AI

Mar 5, 2024 9:46:52 AM By Stu Sjouwerman

Analysis of emerging threats in the age of AI provides insight into exactly how cybercriminals are leveraging AI to advance their efforts.

CyberheistNews Vol 14 #10 [SCARY] You Knew About OSINT, But Did You Know About ADINT?

Mar 5, 2024 9:00:00 AM By Stu Sjouwerman

Phishing Kit Targets the FCC and Crypto Exchanges

Mar 5, 2024 6:43:11 AM By Stu Sjouwerman

Researchers at Lookout have discovered a sophisticated phishing kit that’s targeting employees at the US Federal Communications Commission (FCC), as well as employees of cryptocurrency ...

Cybercriminals Sent 1.76 Billion Social Media Phishing Emails in 2023

Mar 1, 2024 12:52:46 PM By Stu Sjouwerman

As social media phishing reaches new heights, new data reviewing 2023 shows a massive effort by cybercriminals to leverage impersonation of social media brands.

Email-Based Cyber Attacks Increase 222% as Phishing Dominates as the Top Vector

Mar 1, 2024 12:52:43 PM By Stu Sjouwerman

Analysis of the second half of 2023 shows attackers are getting more aggressive with email-based phishing attacks in both frequency and execution.

New Research: Ransomware Incidents Spike 84% in 2023

Feb 28, 2024 2:26:02 PM By Stu Sjouwerman

Newly-released data covering cyberthreats experienced in 2023 sheds some light on how very different last year was and paints a picture of what to expect of cyber attacks in 2024.

Phishing Campaign Targets Mexican Taxpayers With Tax-Themed Lures

Feb 28, 2024 2:25:59 PM By Stu Sjouwerman

A phishing campaign is targeting users in Mexico with tax-themed lures, according to researchers at Cisco Talos. The phishing emails direct users to a website that attempts to trick them ...

When Threat Actors Don’t Have a Viable Email Platform to Phish From, They Just Steal Yours

Feb 28, 2024 12:21:15 PM By Stu Sjouwerman

New analysis of a phishing campaign shows how cybercriminals use brand impersonation of the platforms they need to compromise accounts and takeover legitimate services.

[SCARY] You knew about OSINT, but did you know about ADINT?

Feb 27, 2024 10:27:09 AM By Stu Sjouwerman

WIRED just published a scary (long) article. I am summarizing it here and highly recommend you read the whole thing.

Emails Are Responsible for 88% of Malicious File Deliveries

Feb 27, 2024 9:50:59 AM By Stu Sjouwerman

Emails are still the most common delivery method for malicious files, according to Check Point’s Cyber Security Report for 2024.

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