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

Be Wary of Survey Scams

Feb 8, 2023 9:00:43 AM By Stu Sjouwerman

Online surveys are too often scams designed to steal personal or financial information, warns Phil Muncaster at ESET. Muncaster explains that these surveys are usually distributed via ...

[HEADS UP] If You're a Fan of 'The Last of Us' You May be Targeted for These Campaigns

Feb 8, 2023 9:00:40 AM By Stu Sjouwerman

The success of the TV adaption of this PlayStation game 'The Last of Us' has been a huge hit for fans. Unfortunately, this new series has attracted bad actors to exploit for their own ...

[Scam Of The Week] The Turkey-Syria Earthquake

Feb 7, 2023 9:51:32 AM By Stu Sjouwerman

Just when you think they cannot sink any lower, criminal internet scum is now exploiting the recent earthquake in Turkey and Syria.

CyberheistNews Vol 13 #06 [Eye Opener] Russian and Iranian Spear Phishing Campaigns Are Running Rampant in the U.K.

Feb 7, 2023 9:00:00 AM By Stu Sjouwerman

Thinking Critically About Your Online Behavior

Feb 7, 2023 8:45:03 AM By Stu Sjouwerman

Employees need to adjust their mindsets in order to defend themselves against social engineering attacks, according to Jonathon Watson at Clio. In an article for Dark Reading, Watson ...

[New Feature] Immediately Add User-Reported Email Threats to Your Microsoft 365 Blocklist from Your PhishER Console

Feb 7, 2023 8:00:00 AM By Stu Sjouwerman

Now there’s a super easy way to keep malicious emails away from your users through the power of the KnowBe4 PhishER platform!

Students Phished with Bogus Job Offers

Feb 6, 2023 10:14:44 AM By Stu Sjouwerman

A phishing campaign is targeting college students with phony part-time job opportunities, according to Jeremy Fuchs at Avanan. The emails purport to come from the colleges’ job placement ...

Your KnowBe4 Fresh Content Updates from January 2023

Feb 3, 2023 8:52:14 AM By Stu Sjouwerman

Check out the 39 new pieces of training content added in January, alongside the always fresh content update highlights, events and new features.

Yahoo Suddenly Rises in Popularity in Q4 to Become the Most Impersonated Brand in Phishing Attacks

Feb 2, 2023 4:31:58 PM By Stu Sjouwerman

Completely absent from the top 10 brands for more than two years, Yahoo’s impersonation may indicate that scammers are looking for new attack angles using lesser-used brands.

Initial Access Brokers Leverage Legitimate Google Ads to Gain Malicious Access

Feb 2, 2023 4:31:56 PM By Stu Sjouwerman

A threat actor tracked as DEV-0569 appears to be using a combination of Google Ads and impersonated websites to compromise credentials and distribute malware to gain network access.

BEC Group Launches Hundreds of Campaigns

Feb 2, 2023 9:14:15 AM By Stu Sjouwerman

A business email compromise (BEC) gang has launched more than 350 attacks against organizations in the US, according to researchers at Abnormal Security. The threat actor, which Abnormal ...

KnowBe4 Wins Winter 2023 "Best of" Awards From TrustRadius in Multiple Categories

Feb 1, 2023 1:55:26 PM By Stu Sjouwerman

KnowBe4 is proud to be recognized by TrustRadius in the “Best Of” Awards for overall, best feature set, best relationship, and best value for price in the Security Awareness Training ...

[On-Demand] Artificial Intelligence, ChatGPT and Cybersecurity: A Match Made in Heaven or a Hack Waiting to Happen?

Feb 1, 2023 9:24:06 AM By Stu Sjouwerman

Artificial intelligence (AI) is no longer science fiction.

Scammers Impersonate Financial Advisors Through Social Media Platforms

Feb 1, 2023 9:13:55 AM By Stu Sjouwerman

A large scam campaign is targeting users on LinkedIn and other social media platforms posing as financial advisors, according to researchers at DomainTools. The researchers explain that ...

Travel-Themed Phishing Attacks Lure Victims with Promises of Free Tickets, Points, and Exclusive Deals

Jan 31, 2023 3:04:34 PM By Stu Sjouwerman

New analysis of December and January emails shows massive spikes in attacks aimed at stealing personal information and credit cards under the guise of once-in-a-lifetime travel deals.

OneNote Attachments Used as Phish Hooks

Jan 31, 2023 3:04:28 PM By Stu Sjouwerman

Threat actors are using malicious attachments in OneNote in order to distribute malware, BleepingComputer reports. The attackers attach VBS files that instruct the user to double-click on ...

Ransomware Targets are Getting Larger and Paying More as Fewer Victims Are Paying the Ransom

Jan 31, 2023 3:04:22 PM By Stu Sjouwerman

New data showcasing the state of ransomware shows that while organizations are likely getting better at recovery (and not paying the ransom), cybercriminals are shifting focus to ensure ...

Microsoft OneNote Attachments Become the Latest Method to Spread Malware

Jan 31, 2023 3:04:16 PM By Stu Sjouwerman

With Microsoft disabling macros by default on Office documents, cybercriminals are left needing another means to launch malware that’s victim-supported by default.

CyberheistNews Vol 13 #05 [Eye Opener] Is Cybercrime the World's Third Largest Economy After the U.S. and China?

Jan 31, 2023 9:00:00 AM By Stu Sjouwerman

Russian and Iranian Spear Phishing Campaigns are Running Rampant in the UK

Jan 30, 2023 8:52:25 AM By Stu Sjouwerman

The UK’s National Cyber Security Centre (NCSC) has described two separate spear phishing campaigns launched by Russia’s SEABORGIUM threat actor and Iran’s TA453 (also known as Charming ...

Security Awareness Training Blog

View Topics