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

[World Premiere] KnowBe4 Debuts New Season 6 of Netflix-Style Security Awareness Video Series - “The Inside Man”

Nov 14, 2024 10:00:00 AM By Stu Sjouwerman

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

Criminal Threat Actor Uses Stolen Invoices to Distribute Malware

Nov 13, 2024 3:08:32 PM By Stu Sjouwerman

Researchers at IBM X-Force are tracking a phishing campaign by the criminal threat actor “Hive0145” that’s using stolen invoice notifications to trick users into installing malware.

Nation-State Threat Actors Rely on Social Engineering First

Nov 12, 2024 3:38:33 PM By Stu Sjouwerman

A new report from ESET has found that most nation-state threat actors rely on spear phishing as a primary initial access technique.

CyberheistNews Vol 14 #46 [Eye Opener] Attackers Don't Hack, They Log In. Can You Stop Them?

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

[FREE RESOURCE KIT] Stay Cyber Safe this Holiday Season with Our Free 2024 Resource Kit!

Nov 12, 2024 7:24:00 AM By Stu Sjouwerman

Isn’t it typical for bad actors to strike when we’re distracted and busy during this time of year?

Criminals Use Search Engine Poisoning to Boost Phishing Pages

Nov 11, 2024 4:46:36 PM By Stu Sjouwerman

Researchers at Malwarebytes warn that cybercriminals are using search engine poisoning to boost phishing pages to the top of Bing’s search results.

Recon 2.0: AI-Driven OSINT in the Hands of Cybercriminals

Nov 11, 2024 8:00:00 AM By Stu Sjouwerman

Cybercriminals are using artificial intelligence (AI) and generative AI in open source intelligence (OSINT) activities to target your organization with supercharged reconnaissance efforts.

[Eye Opener] Attackers Don’t Hack, They Log In. Can You Stop Them?

Nov 9, 2024 8:58:57 AM By Stu Sjouwerman

The latest trend in cybercrime is that attackers don't really focus on “hacking” in; they’re logging in.

Phishing Campaign Impersonates OpenAI To Collect Financial Data

Nov 7, 2024 2:31:28 PM By Stu Sjouwerman

Cybercriminals are impersonating OpenAI in a widespread phishing campaign designed to trick users into handing over financial information. The emails inform users that a payment for their ...

Attackers Abuse DocuSign to Send Phony Invoices

Nov 7, 2024 8:09:49 AM By Stu Sjouwerman

Threat actors are abusing DocuSign’s API to send phony invoices that appear “strikingly authentic,” according to researchers at Wallarm.

[Last Chance] KB4-CON APJ Cybersecurity Event is in 10 Days

Nov 5, 2024 2:13:19 PM By Stu Sjouwerman

Tick tock, the countdown is on! KB4-CON APJ starts in just 10 days, and you still have time to register!

BlackBasta Ransomware Gang Uses New Social Engineering Tactics To Target Corporate Networks

Nov 5, 2024 2:13:18 PM By Stu Sjouwerman

ReliaQuest warns that the BlackBasta ransomware gang is using new social engineering tactics to obtain initial access within corporate networks.

Attackers Abuse Eventbrite to Send Phishing Emails

Nov 5, 2024 2:13:13 PM By Stu Sjouwerman

Attackers are abusing Eventbrite’s scheduling platform to send phishing emails, according to researchers at Perception Point. These attacks increased by 900% between July and October 2024.

CyberheistNews Vol 14 #45 [Heads Up] QR Code Phishing is Growing More Sophisticated

Nov 5, 2024 9:26:36 AM By Stu Sjouwerman

Your KnowBe4 Compliance Plus Fresh Content Updates from October 2024

Nov 4, 2024 8:00:00 AM By Stu Sjouwerman

Check out the October updates in Compliance Plus so you can stay on top of featured compliance training content.

Phishing Alert: Cybercriminals Impersonating KnowBe4 Training Emails

Nov 1, 2024 2:34:32 PM By Stu Sjouwerman

In the ever-evolving landscape of cybersecurity threats, we've recently encountered a sophisticated phishing attempt targeting one of our valued KnowBe4 customers. This incident serves as ...

The Rise of Outsourced Cybersecurity: How CISOs are Adapting to New Challenges

Nov 1, 2024 9:59:43 AM By Stu Sjouwerman

Chief Information Security Officers (CISOs) are facing unprecedented challenges. The combination of increasingly sophisticated cyber threats, persistent talent shortages, and complex ...

Threat Actors Abuse LinkedIn to Target Job Seekers

Nov 1, 2024 9:59:39 AM By Stu Sjouwerman

Threat actors are targeting people who have recently lost their jobs with employment scams on LinkedIn, according to researchers at Malwarebytes.

Your KnowBe4 Fresh Content Updates from October 2024

Nov 1, 2024 8:00:00 AM By Stu Sjouwerman

Check out the 60 new pieces of training content added in October, alongside the always fresh content update highlights, events and new features.

QR Code Phishing is Growing More Sophisticated

Oct 30, 2024 1:31:53 PM By Stu Sjouwerman

Sophos describes a QR code phishing (quishing) campaign that targeted its own employees in an attempt to steal information.

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