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

OpenAI Transparency Report Highlights How GPT-4 Can be Used to Aid Both Sides of the Cybersecurity Battle

Apr 20, 2023 8:22:08 AM By Stu Sjouwerman

The nature of an advanced artificial intelligence (AI) engine such as ChatGPT provides its users with an ability to use and misuse, potentially empowering both security teams and threat ...

Nearly One-Half of IT Pros are Told to Keep Quiet About Security Breaches

Apr 20, 2023 8:21:59 AM By Stu Sjouwerman

At a time when cyber attacks are achieving success in varying degrees and IT pros are keeping quiet about resulting breaches, there is one specific type of attack that has them most ...

Phishing Email Volume Doubles in Q1 as the use of Malware in Attacks Slightly Declines

Apr 20, 2023 8:21:53 AM By Stu Sjouwerman

New data shows that cybercriminals started this year off with a massive effort using new techniques and increased levels of attack sophistication.

Guarding Against AI-Enabled Social Engineering: Lessons from a Data Scientist's Experiment

Apr 19, 2023 1:26:59 PM By Stu Sjouwerman

The Verge came out with an article that got my attention. As artificial intelligence continues to advance at an unprecedented pace, the potential for its misuse in the realm of ...

That Email Isn’t from the New Jersey Attorney General

Apr 19, 2023 9:07:12 AM By Stu Sjouwerman

Earlier this month, state employees in the US state of New Jersey began receiving emails that falsely represented themselves as originating with the state’s attorney general.

KnowBe4 Named a Leader in the Spring 2023 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR)

Apr 19, 2023 8:00:00 AM By Stu Sjouwerman

We are excited to announce that KnowBe4 has been named a leader in the Spring 2023 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) for the PhishER platform for ...

[Arm and a Leg] Cyber Insurers Are Worried About The Long-tail Cost of Attacks

Apr 18, 2023 2:43:56 PM By Stu Sjouwerman

[BUDGET AMMO] James Rundle at The Wall Street Journal today published a very interesting article about the long-term costs of cyber attacks and the fact that cyber insurers are getting ...

London NatWest Bank Warns Customers of Alarming Impersonation Scams

Apr 18, 2023 10:08:43 AM By Stu Sjouwerman

National Westminster Bank, the London-based bank familiarly known as NatWest, has warned its customers to be on the alert for emails pretending to be from NatWest, but which in fact are ...

KnowBe4 Named a Leader in the Spring 2023 G2 Grid Report for Security Awareness Training

Apr 18, 2023 9:59:00 AM By Stu Sjouwerman

We are thrilled to announce that KnowBe4 has been named a leader in the latest G2 Grid Report that compares Security Awareness Training (SAT) vendors based on user reviews, customer ...

CyberheistNews Vol 13 #16 [Finger on the Pulse]: How Phishers Leverage Recent AI Buzz

Apr 18, 2023 9:00:00 AM By Stu Sjouwerman

CyberheistNews Vol 13 #16 | April 18th, 2023 [Finger on the Pulse]: How Phishers Leverage Recent AI Buzz Curiosity leads people to suspend their better judgment as a new campaign of ...

Indian Rail Passenger Ticketing Platform Warns of Online Fraud

Apr 17, 2023 11:39:56 AM By Stu Sjouwerman

The Indian Railway Catering and Tourism Corporation (IRCTC), described as “a popular platform used by a significant number of Indians for booking train tickets,” has cautioned users about ...

[Head Start] Effective Methods How To Teach Social Engineering To An AI

Apr 14, 2023 3:57:40 PM By Stu Sjouwerman

Remember The Sims? Well Stanford created a small virtual world with 25 ChatGPT-powered "people". The simulation ran for 2 days and showed that AI-powered bots can interact in a very ...

Affinity Phishing Attacks Use Social Engineering Tactics to Prey on Victims

Apr 13, 2023 9:14:14 AM By Stu Sjouwerman

Affinity phishing scams are ones in which criminals cultivate trust in their prospective victims by trading on common background, either real or feigned. Thus a fraudster might claim a ...

Large Language Models Will Change How ChatGPT and Other AI Tools Revolutionize Email Scams

Apr 13, 2023 9:14:12 AM By Stu Sjouwerman

The use of Large Language Models (LLMs) is the fine tuning AI engines like ChatGPT need to focus the scam email output to only effective content that results in a wave of new email scams.

‘Support’ Tops the List of Combosquatted Domains Used in Phishing Attacks

Apr 13, 2023 9:14:11 AM By Stu Sjouwerman

A method used in domain impersonation attacks, combosquatting aids the threat actor by using a modified domain name to further increase the credibility of an attack.

Recent Artificial Intelligence Hype is Used for Phishbait

Apr 12, 2023 8:51:10 AM By Stu Sjouwerman

Curiosity leads people to suspend their better judgment as a new campaign of credential theft exploits a person’s excitement about the newest AI systems not yet available to the general ...

CyberheistNews Vol 13 #15 [The New Face of Fraud] FTC Sheds Light on AI-Enhanced Family Emergency Scams

Apr 11, 2023 9:16:54 AM By Stu Sjouwerman

CyberheistNews Vol 13 #15 | April 11th, 2023 [The New Face of Fraud] FTC Sheds Light on AI-Enhanced Family Emergency Scams The Federal Trade Commission is alerting consumers about a ...

[Free Tool] See Which Users Are Susceptible to Risky Security Behavior with SecurityCoach Free Preview!

Apr 11, 2023 8:00:00 AM By Stu Sjouwerman

The human factor is involved in 82% of data breaches, according to the 2022 Verizon Data Breach Investigations Report. Cybercriminals use social engineering techniques like phishing, ...

[Jaw-Dropper] FTX's Cybersecurity Was Hilariously Bad

Apr 11, 2023 7:05:54 AM By Stu Sjouwerman

4/11/2023 - Gizmodo just dropped this eye-roll inducing news. The disgraced crypto exchange had no dedicated cybersecurity staff and "protected" users assets with minimal safeguards, ...

Alarming Tax Phishing Campaign Targets US with Malware

Apr 10, 2023 10:21:40 AM By Stu Sjouwerman

Researchers at Securonix are tracking an ongoing phishing campaign dubbed “TACTICAL#OCTOPUS” that’s been targeting users in the US with tax-related phishing emails.

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