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

New “Paste and Run” Phishing Technique Makes CTRL-V A Cyber Attack Accomplice

Jul 5, 2024 7:40:28 AM By Stu Sjouwerman

A new phishing campaign tries to trick email recipients into pasting and executing malicious commands on their system that installs DarkGate malware.

Ransomware Attack on U.K. Health Service Laboratory Disrupts Major London Hospital Services

Jul 2, 2024 1:55:38 PM By Stu Sjouwerman

What likely started as a quick ransomware “smash and grab” has turned into a headline case resulting in responses from both U.K. and U.S. law enforcement.

Hacked Customer Support Portal Being Used to Send Phishing Emails

Jul 2, 2024 1:55:30 PM By Stu Sjouwerman

A hacked customer support portal belonging to router manufacturer Mercku is being used to respond to customer queries with phishing emails, BleepingComputer reports.

CyberheistNews Vol 14 #27 [Important Alert] TeamViewer Network Breached as Russian APT29 Hackers Strike Again

Jul 2, 2024 9:03:33 AM By Stu Sjouwerman

New Malware Campaign Impersonates AI Tools To Trick Users

Jul 1, 2024 1:54:27 PM By Stu Sjouwerman

Researchers at ESET warn that malvertising campaigns are impersonating AI tools to trick users into installing malware. The Rilide infostealer, for example, is being distributed via a ...

Your KnowBe4 Compliance Plus Fresh Content Updates from June 2024

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

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

[Important Alert] TeamViewer Network Breached as Russian APT29 Hackers Strike Again

Jun 28, 2024 8:47:56 AM By Stu Sjouwerman

In a concerning development, TeamViewer, one of the world's leading remote access software providers, has disclosed a cyber attack that breached its corporate network environment.

KnowBe4 Recognized as Cyber Security Educator of the Year at IT Europa Awards 2024

Jun 28, 2024 8:47:39 AM By Stu Sjouwerman

It's a great honor for KnowBe4 to be named the Cyber Security Educator of the Year at the prestigious IT Europa Channel Awards 2024.

Your KnowBe4 Fresh Content Updates from June 2024

Jun 28, 2024 8:00:00 AM By Stu Sjouwerman

Check out the 29 new pieces of training content added in June, alongside the always fresh content update highlights, events and new features.

Russian Threat Actor Launches Spear Phishing Attacks Against French Diplomats

Jun 27, 2024 1:46:32 PM By Stu Sjouwerman

France’s cybersecurity agency ANSSI has issued an alert outlining a Russian spear phishing campaign targeting French diplomats, the Record reports. The agency attributes the campaign to ...

FBI Warns of Phishing Campaign Targeting the Healthcare Industry

Jun 27, 2024 1:46:27 PM By Stu Sjouwerman

The US FBI and the Department of Health and Human Services (HHS) have released a joint advisory warning of a social engineering campaign that’s targeting the healthcare industry.

Cybercriminals Set Sights on Digital Identities of Singapore Citizens

Jun 27, 2024 1:46:23 PM By Stu Sjouwerman

Singapore has become the latest target for cybercriminals looking to steal digital identities and exploit them for nefarious purposes.

Mexican Organizations Under Attack from Specialized Cyber Criminals

Jun 25, 2024 10:15:25 AM By Stu Sjouwerman

A crafty group of cybercriminals has been relentlessly pursuing Mexican banks, cryptocurrency platforms and other organizations in an extended campaign stretching back over two years. ...

Phishing Attacks in the UK Have Surged

Jun 25, 2024 10:15:22 AM By Stu Sjouwerman

Over 11 million phishing attacks have been reported to the UK’s Suspicious Email Reporting Service (SERS) over the past year, according to new data from Action Fraud. The UK’s National ...

CyberheistNews Vol 14 #26 [Heads Up] Tricky Fake Invoice Phishing Attack Uses Search to Deliver Malware

Jun 25, 2024 9:00:00 AM By Stu Sjouwerman

FREE Resource Kit for Ransomware Awareness Month in July

Jun 25, 2024 8:00:00 AM By Stu Sjouwerman

We’re here to help you and your users stay secure from the scourge of ransomware for Ransomware Awareness Month this July with a kit full of free resources!

BEC Attacks Accounted for More Than One in Ten Social Engineering Attacks in 2023

Jun 24, 2024 9:21:30 AM By Stu Sjouwerman

A new report from Barracuda has found that email conversation hijacking attacks have risen by 70% since 2022. Additionally, business email compromise (BEC) attacks accounted for 10.6% of ...

Vacation-Themed Scams Are Spiking

Jun 20, 2024 11:33:45 AM By Stu Sjouwerman

Scammers are now impersonating legitimate services like Booking.com and Kayak to target people planning their summer vacations. One out of every 33 vacation-themed domains registered last ...

Brazilian Entities Increasingly Targeted by Nation-State Phishing Attacks

Jun 18, 2024 1:58:40 PM By Stu Sjouwerman

Mandiant has published a report looking at cyber threats targeting Brazil, finding that more than 85% of government-backed phishing activity comes from threat actors based in China, North ...

CyberheistNews Vol 14 #25 Microsoft and KnowBe4 Collaborate on Ribbon Phish Alert Button for Outlook

Jun 18, 2024 9:00:00 AM By Stu Sjouwerman

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