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

[Heads Up] New Evil Ransomware Feature: Disk Wiper if You Don't Pay

Mar 17, 2022 8:43:59 AM By Stu Sjouwerman

There is a new ransomware-as-a-service (RaaS) strain called LokiLocker, researchers at Blackberry warn. The malware uses rare code obfuscation and includes a file wiper component that ...

KnowBe4 Named a Leader in The Forrester Wave for Security Awareness and Training Solutions

Mar 17, 2022 8:00:00 AM By Stu Sjouwerman

We’re thrilled to announce that KnowBe4 has been named a Leader in The Forrester WaveTM : Security Awareness and Training Solutions, Q1 2022 report based on our current offering, strategy ...

Ransomware-Related Data Leaks Increase 82% as the Number of Cybercriminal Groups Nearly Triples

Mar 16, 2022 10:27:52 AM By Stu Sjouwerman

New insight into the state of the attacks and threats paints a picture where the cybercriminals are growing in number, sophistication and successes, while victims just sit back seemingly ...

Backups Become the Focus as Three-Fourths of Organizations Experienced Ransomware Attacks

Mar 16, 2022 10:25:21 AM By Stu Sjouwerman

New data puts the spotlight on how most organizations unable to completely recover their data after a ransomware attack, making the case for better data protection for improved incident ...

New Phishing Method Uses VNC to Bypass MFA Measures and Gives Cybercriminals Needed Access

Mar 16, 2022 10:20:57 AM By Stu Sjouwerman

Despite cloud vendors like Google detecting reverse proxies or man-in-the-middle (MiTM) attacks and halting logons to thwart malicious actions, a new method easily gains access.

[Eye Opener] Ukraine Is Now Being Hit With 4 Different Strains Of Wiper Malware

Mar 15, 2022 4:10:10 PM By Stu Sjouwerman

Newly discovered data-destroying malware was found this week in attacks targeting Ukrainian organizations and deleting data across systems on compromised networks. "This new malware ...

We Are In The First Open Source Intelligence War

Mar 15, 2022 11:28:19 AM By Stu Sjouwerman

I am a member of OODA loop. They are a great team that keeps me up to date about InfoSec issues. Their site always has interesting articles and this one certainly got my attention. The ...

CyberheistNews Vol 12 #11 [Heads Up] FBI: Ransomware Gang Breached 52 U.S. Critical Infrastructure Orgs

Mar 15, 2022 9:41:15 AM By Stu Sjouwerman

[Heads Up] FBI: Ransomware Gang Breached 52 US Critical Infrastructure Orgs Email not displaying? | View Knowbe4 Blog CyberheistNews Vol 12 #11 | Mar. 15th., 2022 [Heads Up] FBI: ...

Shipping Fraud Rises Nearly 800% in 2021

Mar 15, 2022 8:48:09 AM By Stu Sjouwerman

Shipping fraud had a global increase of nearly 800% over the course of 2021, according to TransUnion’s 2022 Global Digital Fraud Trends Report.

[On-Demand Webinar] Cybercrime-as-a-Service: Its Evolution and What You Can Do to Fight Back

Mar 15, 2022 8:43:58 AM By Stu Sjouwerman

The cybercrime market has skyrocketed in a frightening way. With threats such as ransomware to Business Email Compromise (BEC), the stakes are higher than ever for organizations across ...

Social Engineering through Contact Form

Mar 14, 2022 9:16:00 AM By Stu Sjouwerman

Email is the familiar form of phishing, but there’s an ongoing criminal campaign that follows a different, arguably subtler avenue of approach: the corporate contact form. Abnormal ...

Email-Based Vishing Attacks Skyrocket 554% as Phishing, Social Media, and Malware Attacks Are All on the Rise

Mar 11, 2022 10:28:20 AM By Stu Sjouwerman

A new analysis of attacks in 2021 shows massive increases across the board, painting a very concerning picture for 2022 cyberattacks of all types.

“Warm Greetings” (or not) : Saudi Aramco Impersonation

Mar 10, 2022 9:31:37 AM By Stu Sjouwerman

Researchers at Malwarebytes warn of a phishing campaign that’s targeting the oil and gas industry by impersonating Saudi Aramco.

Phishing and Scam Pages Increase by 153% as Cybercriminals Seek to Establish Credibility

Mar 10, 2022 9:31:15 AM By Stu Sjouwerman

As part of either impersonating known brands or simply leveraging credible cloud services, the use of a web page as part of an attack has become a staple for threat actors.

Passwords are Reused 64% of the Time as the Number of Passwords to Remember Reaches Over 100

Mar 10, 2022 9:30:39 AM By Stu Sjouwerman

New data focusing on user cyber hygiene around password use shows users are repeatedly reusing passwords across multiple applications and environments, despite the rise in breaches.

KnowBe4's Position On Recent Russian Aggression

Mar 9, 2022 1:59:30 PM By Stu Sjouwerman

The unprovoked attack on the Ukrainian people, and subsequent humanitarian crisis it has caused, is an unacceptable act of aggression by the Russian state. While we do not currently ...

Up and To the Right: Ransomware Attacks Grow by 105% in 2021

Mar 9, 2022 10:58:35 AM By Stu Sjouwerman

New data from Sonicwall shows the numbers of nearly every type of attack growing in 2021, with concerns by organizations about attacks and their aftermath at an all-time high.

83% of all Successful Ransomware Attacks Featured Double and Triple Extortion

Mar 9, 2022 10:58:22 AM By Stu Sjouwerman

With 2021 being the “testing ground” for ransomware extortion, 2022 is showing signs of ransomware gangs settling in on proven extortion tactics to ensure payment.

Social Engineering a Major Factor in Cyberattack on Camera Maker Axis Communications

Mar 9, 2022 10:58:04 AM By Stu Sjouwerman

As details of the February attack continue to be divulged, it becomes evident that cybercriminals were able to get past both users and security controls.

Domains Associated with Phishing Directed Against Ukraine

Mar 9, 2022 9:05:47 AM By Stu Sjouwerman

Researchers from Secureworks’ Counter Threat Unit (CTU) are tracking phishing domains used by the “MOONSCAPE” threat actor to target users in Ukraine. The researchers note that Ukraine’s ...

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