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

As Many as 1 in 7 Emails Make it Past Your Email Filters

May 24, 2024 3:42:17 PM By Stu Sjouwerman

Fluctuations in consecutive quarterly reports demonstrates that organizations should be worried that their cyber defenses may not be strong enough to stop phishing attacks.

Secure Your Site: Learn from the Top 10 Cybersecurity Experts of 2024

May 23, 2024 3:35:14 PM By Stu Sjouwerman

Companies have needed a website for the last 25 years at least. But where do you host your site? The techies at HostingAdvice decided to create an extremely thorough real-world review ...

New Research Finds Phishing Scams Targeting Popular PDF Viewer

May 23, 2024 2:40:28 PM By Stu Sjouwerman

Several phishing campaigns are targeting users of the Foxit PDF Reader, according to researchers at Check Point. Foxit is a popular alternative to Adobe Acrobat Reader for viewing PDF ...

UK Cybersecurity Org Offers Advice for Thwarting BEC Attacks

May 22, 2024 3:18:43 PM By Stu Sjouwerman

The UK’s National Cyber Security Centre (NCSC) has issued guidance to help medium-sized organizations defend themselves against business email compromise (BEC) attacks, especially those ...

Malicious Use of Generative AI Large Language Models Now Comes in Multiple Flavors

May 22, 2024 3:18:20 PM By Stu Sjouwerman

Analysis of malicious large language model (LLM) offerings on the dark web uncovers wide variation in service quality, methodology and value – with some being downright scams.

The Shadow War: Cognitive Warfare and the Politics of Disinformation

May 21, 2024 4:42:21 PM By Stu Sjouwerman

For better or for worse, we live in a world that is an anarchy of nations. Over the last few decades, warfare has transcended traditional battlefields. We may already be experiencing a ...

Newly Updated Grandoreiro Banking Trojan Distributed Via Phishing Campaigns

May 21, 2024 3:33:47 PM By Stu Sjouwerman

Researchers at IBM X-Force are tracking several large phishing campaigns spreading an updated version of the Grandoreiro banking trojan.

Cyber Insurance Claims Rise Due To Phishing and Social Engineering Cyber Attacks

May 21, 2024 3:31:34 PM By Stu Sjouwerman

New data covering cyber insurance claims through 2023 shows claims have increased while reaffirming what we already know: phishing and social engineering are the real problem.

CyberheistNews Vol 14 #21 How Come Unknown Attack Vectors Are Surging in Ransomware Infections?

May 21, 2024 9:03:37 AM By Stu Sjouwerman

New Threat Report Finds Nearly 90% of Cyber Threats Involve Social Engineering

May 20, 2024 2:55:38 PM By Stu Sjouwerman

Analysis of over 3.5 billion attacks provides insight into where threat actors are placing their efforts and where you should focus your cyber defenses.

Verizon: The Human Element is Behind Two-Thirds of Data Breaches

May 17, 2024 3:02:47 PM By Stu Sjouwerman

Despite growing security investments in prevention, detection and response to threats, users are still making uninformed mistakes and causing breaches.

8 out of 10 Organizations Experience a Cyber Attack and Attribute Users as the Problem

May 17, 2024 2:58:11 PM By Stu Sjouwerman

Regardless of whether your environment is on-premises, in the cloud or hybrid, new data makes it clear that users are the top cybersecurity concern, and we cover what you can do about it.

Scam Service Attempts to Bypass Multi-factor Authentication

May 16, 2024 12:54:05 PM By Stu Sjouwerman

A scam operation called “Estate” has attempted to trick nearly a hundred thousand people into handing over multi-factor authentication codes over the past year, according to Zack ...

Phishing and Pretexting Dominate Social Engineering-Related Data Breaches

May 15, 2024 11:15:31 AM By Stu Sjouwerman

New data shows that despite the massive evolution of the cybercrime economy, threat actors are sticking with the basics in social engineering attacks, with a goal at stealing data.

FBI Warns of AI-Assisted Phishing Campaigns

May 15, 2024 11:15:28 AM By Stu Sjouwerman

The US Federal Bureau of Investigation’s (FBI’s) San Francisco division warns that threat actors are increasingly using AI tools to improve their social engineering attacks.

How Come Unknown Attack Vectors are Surging in Ransomware Infections?

May 14, 2024 2:30:08 PM By Stu Sjouwerman

Trend analysis of ransomware attacks in the first quarter of this year reveals a continual increase in the number of "unknown" initial attack vectors, and I think I understand why.

Attackers Leveraging XSS To Make Phishing Emails Increasingly Evasive

May 14, 2024 2:30:02 PM By Stu Sjouwerman

Attackers are exploiting Reflected Cross-Site Scripting (XSS) flaws to bypass security filters, according to a new report from Vipre. This technique allows attackers to send benign links ...

CyberheistNews Vol 14 #20 Verizon: Nearly 80% of Data Breaches Involve Phishing and the Misuse of Credentials

May 14, 2024 9:00:00 AM By Stu Sjouwerman

Alert: Nova Scotians Hit by Surge of Sophisticated Spear Phishing Scams

May 14, 2024 8:37:34 AM By Stu Sjouwerman

The Royal Canadian Mounted Police (RCMP) in Nova Scotia is warning of spear phishing attacks that impersonate company managers. The scammers text company employees requesting a payment to ...

New Research: Number of Successful Ransomware Attacks Rise 29% in a Just One Year

May 14, 2024 8:37:31 AM By Stu Sjouwerman

New analysis of Q1’s ransomware attacks uncovers a single group responsible for the majority and discusses what makes them so successful.

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