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

That’s Not Actually Mr. Musk, That's a Scam

Apr 5, 2023 11:43:02 AM By Stu Sjouwerman

A school principal in Volusia County, Florida has resigned after sending $100,000 to a scammer posing as Elon Musk, WESH 2 News reports. Dr. Jan McGee from the Burns Science and ...

[On-Demand] A Master Class on IT Security: Roger Grimes Teaches Ransomware Mitigation

Apr 5, 2023 8:00:00 AM By Stu Sjouwerman

Cybercriminals have become thoughtful about ransomware attacks; taking time to maximize your organization’s potential damage and their payoff. Protecting your network from this growing ...

Scareware From a Phony Ransomware Group

Apr 4, 2023 9:50:02 AM By Stu Sjouwerman

BleepingComputer reports that a cybercriminal gang is sending phony ransomware threats to prior victims of ransomware attacks. The gang, which calls itself “Midnight,” claims to have ...

CyberheistNews Vol 13 #14 [Eyes on the Prize] How Crafty Cons Attempted a 36 Million Vendor Email Heist

Apr 4, 2023 9:00:00 AM By Stu Sjouwerman

CyberheistNews Vol 13 #14 | April 4th, 2023 [Eyes on the Prize] How Crafty Cons Attempted a 36 Million Vendor Email Heist The details in this thwarted VEC attack demonstrate how the use ...

Social Engineering Attacks Utilizing Generative AI Increase by 135%

Apr 4, 2023 8:08:53 AM By Stu Sjouwerman

New insights from cybersecurity artificial intelligence (AI) company Darktrace shows a 135% increase in novel social engineering attacks from Generative AI.

Ukrainian Police Take Down Cybercrime Ring

Apr 3, 2023 11:51:13 AM By Stu Sjouwerman

The Cyber Police of Ukraine have arrested twelve alleged members of an organized cybercrime group that’s stolen approximately $4.3 million from users across Europe, the Hacker News ...

Mid-Sized Businesses Lack the Staffing, Expertise, and Resources to Defend Against Cyberattacks

Apr 3, 2023 8:16:11 AM By Stu Sjouwerman

Mid-sized businesses – those with 250 to 2000 employees – don’t appear to have what they need to fend off attacks in a number of critical ways.

Majority of Government Employees are Partially Working Virtually Despite Increased User-Related Cyber Risks

Apr 3, 2023 8:16:08 AM By Stu Sjouwerman

New global data shows that those government employees that work solely in the office are the new minority, IT lacks visibility, and user actions put the government at risk.

Fake ChatGPT Scam Turns into a Fraudulent Money-Making Scheme

Apr 3, 2023 8:16:05 AM By Stu Sjouwerman

Using the lure of ChatGPT’s AI as a means to find new ways to make money, scammers trick victims using a phishing-turned-vishing attack that eventually takes victim’s money.

The New Face of Fraud: FTC Sheds Light on AI-Enhanced Family Emergency Scams

Mar 31, 2023 9:41:32 AM By Stu Sjouwerman

The Federal Trade Commission is alerting consumers about a next-level, more sophisticated family emergency scam that uses AI which imitates the voice of a "family member in distress".

Artificial Intelligence Makes Phishing Text More Plausible

Mar 30, 2023 8:58:09 AM By Stu Sjouwerman

Cybersecurity experts continue to warn that advanced chatbots like ChatGPT are making it easier for cybercriminals to craft phishing emails with pristine spelling and grammar, The ...

The Pope, Puff Jackets and Money going POOF!

Mar 29, 2023 4:40:39 PM By Stu Sjouwerman

You have probably seen it. Pope Francis in a designer puff jacket. It fooled millions of people. Culture writer Ryan Broderick called it the “first real mass-level AI misinformation case.”

Australian Police Arrest Business Email Compromise (BEC) Operators

Mar 29, 2023 8:43:18 AM By Stu Sjouwerman

The Australian Federal Police (AFP) have arrested four alleged members of an organized crime group known for carrying out business email compromise (BEC) attacks, BleepingComputer ...

The FBI's Public Service Warning of Business Email Compromise

Mar 29, 2023 8:01:52 AM By Stu Sjouwerman

The US FBI is warning of business email compromise (BEC) attacks designed to steal physical goods. While BEC attacks are typically associated with stealing money, criminals can use the ...

[Eyes Only] New Deepfake Pr0n Site Visits Skyrocket

Mar 28, 2023 10:39:31 AM By Stu Sjouwerman

This is a disgusting topic. It's also a very high social engineering risk. I will keep this post safe-for-work, which is not easy. NBC news just reported on the deepfake economy surging ...

CyberheistNews Vol 13 #13 [Eye Opener] How to Outsmart Sneaky AI-Based Phishing Attacks

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

CyberheistNews Vol 13 #13 | March 28th, 2023 [Eye Opener] How to Outsmart Sneaky AI-Based Phishing Attacks Users need to adapt to an evolving threat landscape in which attackers can use ...

KnowBe4 Debuts Season 5 of Netflix-Style Security Awareness Series - ‘The Inside Man’

Mar 28, 2023 8:00:00 AM By Stu Sjouwerman

We’re thrilled to announce the long-awaited fifth season of the award-winning KnowBe4 Original Series - “The Inside Man” is now available in the KnowBe4ModStore!

Oversharing Is a Risk to Information Security

Mar 27, 2023 1:54:56 PM By Stu Sjouwerman

Younger employees need to be wary of oversharing company information on social media, according to John Karabin, senior director of cybersecurity at NTT Ltd. In an article for ...

New Vendor Email Compromise Attack Seeks $36 Million

Mar 24, 2023 11:03:14 AM By Stu Sjouwerman

The details in this thwarted VEC attack demonstrate how the use of just a few key details can both establish credibility and indicate the entire thing is a scam.

Ransomware Data Theft Extortion Goes up 40% to 70% From ‘21 to ’22

Mar 24, 2023 8:15:00 AM By Stu Sjouwerman

A report from Palo Alto Networks’ Unit 42 found that data theft extortion occurred in 70% of ransomware attacks in 2022, compared to 40% in 2021. The researchers examined the four most ...

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