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 articles and updates from the KnowBe4 Technical Content Team

Nov 9, 2019 9:36:51 AM By Stu Sjouwerman

Here are all of the major items and updates our Technical Content Engineers have added to our knowledge base and KMSAT product in the last couple of months.

Specially Crafted ZIP Files Used to Bypass Secure Email Gateways

Nov 8, 2019 7:00:00 AM By Stu Sjouwerman

Attackers are always looking for new tricks to distribute malware without them being detected by antivirus scanners and secure email gateways. This was illustrated in a new phishing ...

The Direct Deposit Phish: Revisiting the Scene of the Crime

Nov 8, 2019 7:00:00 AM By Stu Sjouwerman

By Eric Howes, KnowBe4 Principal Lab Researcher. Well over a year ago we reported on the rise of a new form of CEO fraud in which malicious actors persuaded unwitting employees working in ...

Here Is A New Term For Your Cybercrime Glossary: Vendor Email Compromise (VEC)

Nov 8, 2019 6:49:08 AM By Stu Sjouwerman

Agari’s latest Email Fraud & Identity Deception Trends report highlights the growing threat of vendor email compromise (VEC), according to SecurityWeek. This is a variety of business ...

Exactly Why Is Replying to Phishing Attacks A Really Bad Idea?

Nov 7, 2019 7:00:00 AM By Stu Sjouwerman

PhishLabs warns that replying to a phishing email, even if you know it’s a scam, can lead to further attacks. Most phishing campaigns are automated and replying to them puts you on a ...

The Cold War Was Like Being Hit With A Club. Cyber War is Being Stung With A Syringe

Nov 5, 2019 3:16:53 PM By Stu Sjouwerman

America's Cold War with Russia was fought with the threat of mutually assured destruction using atomic weapons. Being hit with a nuke is very much like being whacked over the head with a ...

APWG Q3 Report: Phishing Attacks at Highest Level in Three Years

Nov 5, 2019 10:38:28 AM By Stu Sjouwerman

According to the APWG’s new Phishing Activity Trends Report, the number of phishing attacks continued to rise into the autumn of 2019. The total number of phishing sites detected by APWG ...

CyberheistNews Vol 9 #45 [Heads-Up] Scam of the Week: Phishing Attacks Using Better Benefits and Pay Raise Bait

Nov 5, 2019 9:49:31 AM By Stu Sjouwerman

You Need To Start Thinking Differently About This Whole "Insider Threat" Concept

Nov 5, 2019 5:40:59 AM By Stu Sjouwerman

In order to defend against insider threats, you need an accurate picture of the problem. The CyberWire’s Carole Theriault spoke to a number of industry experts about insider threats and ...

Ransomware Attack Blocks Hundreds Of Law Firms From Their Trial Records

Nov 4, 2019 2:03:25 PM By Stu Sjouwerman

I could not come up with a better scenario to get sued by a pack of angry lawyers. Reams of digital legal documents have been held hostage under a ransomware threat to TrialWorks, a ...

Healthcare Industry Names KnowBe4 As The 2019 Top Rated Platform For Cybersecurity Training & Education

Nov 4, 2019 10:22:19 AM By Stu Sjouwerman

Black Book Market Research LLC surveyed over 2,876 security professionals from 733 provider organizations to identify gaps, vulnerabilities and deficiencies that persist in keeping ...

American Nikkei Employee Falls For Social Engineering Scam And Loses 29 Million Dollars

Nov 4, 2019 7:48:46 AM By Stu Sjouwerman

Phil Muncaster at InfoSec Mag had the (painful) scoop: "Media giant Nikkei has become the latest firm to suffer a humiliating Business Email Compromise (BEC), after it admitted losing ...

Phishing Kits Hosted on More than Six Thousand Domains

Nov 4, 2019 6:01:26 AM By Stu Sjouwerman

Akamai’s 2019 State of the Internet / Security Report found that 6,035 domains were being used to host 120 different phishing kits, according to BleepingComputer. The phishing kits ...

[Heads Up] Scam Of The Week: Phishing Attacks Using Better Benefits And Pay Raise Bait

Nov 2, 2019 9:25:02 AM By Stu Sjouwerman

Millions of employees use KnowBe4's Phish Alert Button to report suspect emails, and thousands of organizations share these reports with us. This has become a fascinating threat source, ...

KnowBe4 Fresh Content & Features Updates - October 2019

Nov 1, 2019 9:49:42 AM By Stu Sjouwerman

Check out the content and feature updates in the KnowBe4 platform for the month of October!

Webroot Threat Researchers Take a Fresh Look at Phishing Tactics

Nov 1, 2019 7:15:50 AM By Stu Sjouwerman

Most people aren’t aware of how sophisticated phishing email templates and websites have become, according to David Dufour from Webroot. Dufour recently told the CyberWire that criminals ...

SAVE THE DATE!! KnowBe4 User Conference - April 15-17, 2020

Oct 31, 2019 11:54:25 AM By Stu Sjouwerman

KnowBe4’s third annual KB4-Con user conference will be held at the Gaylord Palms Resort & Convention Center in Orlando, FL. KnowBe4 customers get twofree event passes per ...

KnowBe4 Achieves FedRAMP Authorization from the US Federal Government

Oct 31, 2019 11:44:08 AM By Stu Sjouwerman

On October 25, 2019, KnowBe4 became the first and only security awareness training and simulated phishing provider to receive FedRAMP authorized status. We are very proud of this ...

Captain Awareness Has A Halloween Message For You

Oct 31, 2019 11:28:14 AM By Stu Sjouwerman

Think Before You Click!

It's Benefits Enrollment Season Again...And That Means Prime Phishing Season!

Oct 31, 2019 11:14:54 AM By Stu Sjouwerman

By Eric Howes, KnowBe4 Principal Lab Researcher. Not content just to make tax season even more miserable than it already is, malicious actors are increasingly maneuvering to capitalize on ...

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