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

Bad Actor Uses Fake Android Chat to Install Malware

Aug 2, 2023 8:52:08 AM By Stu Sjouwerman

Researchers at CYFIRMA warn that the Bahamut threat actor is using a malicious Android app to deliver malware.

A Long-Running Credential Phishing Expedition

Aug 1, 2023 9:02:44 AM By Stu Sjouwerman

Researchers at Akamai describe a credential phishing campaign that’s been running since at least March 2022. Due to the volume of traffic to the phishing sites, the researchers estimate ...

CyberheistNews Vol 13 #31 [Beware of the Barbie Scams] What You Need to Know After the Recent Movie Release

Aug 1, 2023 9:00:00 AM By Stu Sjouwerman

Amazon Sends Email to Customers on Common Scam Tactics

Jul 31, 2023 11:00:43 AM By Stu Sjouwerman

We've reported on several Amazon scams, but for once, there is positive news. Amazon sent an email Thursday morning highlighting the top scams your users should watch out for:

CISA Discovers Spear Phishing and Valid Account Compromise Are the Most Common Attack Vectors

Jul 31, 2023 11:00:38 AM By Stu Sjouwerman

The US Cybersecurity and Infrastructure Security Agency (CISA) has found that compromise of valid accounts and spear phishing attacks were the two most common vectors of initial access in ...

Heads Up: Google Inactive Account Deletion Notifications

Jul 31, 2023 8:17:51 AM By Stu Sjouwerman

Google announced an update to their inactive account policies in May. Accounts that have been inactive for a period of two years or more will start being deleted in December 2023, at the ...

Researchers uncover surprising method to hack the guardrails of LLMs

Jul 29, 2023 9:12:49 AM By Stu Sjouwerman

Researchers from Carnegie Mellon University and the Center for A.I. Safety have discovered a new prompt injection method to override the guardrails of large language models (LLMs). These ...

Your KnowBe4 Fresh Content Updates from July 2023

Jul 28, 2023 8:00:00 AM By Stu Sjouwerman

Check out the 28 new pieces of training content added in July, alongside the always fresh content update highlights, events and new features.

SEC Implements New Rule Requiring Firms to Disclose Cybersecurity Breaches in 4 Days

Jul 28, 2023 6:57:47 AM By Stu Sjouwerman

What happened? The SEC (Securities and Exchange Commission) has introduced new rules that require public companies to be more transparent about their cybersecurity risks and any breaches ...

Facebook Scams Impersonate AI Tools

Jul 27, 2023 2:27:57 PM By Stu Sjouwerman

Fraudsters are spreading scams on Facebook that pose as ads for legitimate AI tools, according to researchers at Check Point. The Facebook pages impersonate ChatGPT, Google Bard, ...

Russia-Based Global Cybersecurity Vendor Group-IB Exits the Russian Market

Jul 27, 2023 2:26:31 PM By Stu Sjouwerman

Amid potential concerns by governments, customers, and prospects about ties with the Russian government, the cybersecurity vendor Group-IB continues in its promise to separate itself from ...

Phishing Email Attack Numbers “Decline” While Malware Volumes Increase 15%

Jul 27, 2023 2:26:27 PM By Stu Sjouwerman

New data focused on the first half of the year shows some anomalies. Phishing attacks are slowing down… that is, until you dive into the details.

[Live Demo] Customizing Your Compliance Training to Increase Effectiveness

Jul 27, 2023 8:00:00 AM By Stu Sjouwerman

Linking compliance training to specific outcomes is hard. Compliance training has a reputation for being challenging for organizations to offer, difficult to do right and employees are ...

New IBM report reveals the cost of a data breach now tops $4.45 million

Jul 26, 2023 3:21:29 PM By Stu Sjouwerman

IBM Security has released its annual Cost of a Data Breach Report, revealing that the global average cost of a data breach reached $4.45 million in 2023. This marks a significant increase ...

Beware of the Barbie Scam: What You Need to Know After the Recent Movie Release

Jul 26, 2023 8:44:37 AM By Stu Sjouwerman

Scammers are taking advantage of the popularity of the Barbie movie, according to researchers at McAfee.

[Live Demo] Ridiculously Easy Security Awareness Training and Phishing

Jul 26, 2023 8:00:00 AM By Stu Sjouwerman

Old-school awareness training does not hack it anymore. Your email filters have an average 7-10% failure rate; you need a strong human firewall as your last line of defense.

The Secret's Out: Researchers Reveal Backdoor in Emergency Radio Encryption

Jul 25, 2023 4:44:50 PM By Stu Sjouwerman

For over 25 years, a technology utilized for vital data and voice radio communications globally has remained under wraps, preventing in-depth testing for potential vulnerabilities. ...

Phony Browser Updates Deliver NetSupport Trojan Using Social Engineering Tactics

Jul 25, 2023 10:16:41 AM By Stu Sjouwerman

A new social engineering campaign tracked as “FakeSG” is distributing the NetSupport remote access Trojan (RAT) via phony browser updates, according to researchers at Malwarebytes. The ...

CyberheistNews Vol 13 #30 [IN MEMORIAM] Kevin David Mitnick (Aug 6, 1963 - July 16, 2023)

Jul 25, 2023 9:00:00 AM By Stu Sjouwerman

FBI Warns of Increased Tech Support Scams Using Snail Mail

Jul 24, 2023 10:12:08 AM By Stu Sjouwerman

The US Federal Bureau of Investigation (FBI) has warned of an increase in tech support scams that attempt to trick users into sending cash via snail mail.

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