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

Use KnowBe4’s New Callback Phishing Feature to Boost Your Organization's Security Awareness

Aug 25, 2023 8:20:17 AM By Stu Sjouwerman

What's the Deal with Callback Phishing?

Your KnowBe4 Fresh Content Updates from August 2023

Aug 25, 2023 8:00:00 AM By Stu Sjouwerman

Check out the 21 new pieces of training content added in August, alongside the always fresh content update highlights, events and new features.

Duolingo Users Should Be on the Lookout for Targeted Phishing Attacks

Aug 24, 2023 8:58:30 AM By Stu Sjouwerman

Users of the language learning app Duolingo should be wary of targeted phishing attacks following a recent data leak, according to Anthony Spadafora at Tom’s Guide. Criminals scraped the ...

Data Breaches Involving Social Engineering Attacks Take Longer to Identify and Contain

Aug 23, 2023 3:28:36 PM By Stu Sjouwerman

Continuing coverage of IBM’s recently-released Cost of a Data Breach report, we focus on the impact attacks involving social engineering have on data breach costs.

Ransomware Attacks Rise 69% and 1500 Organizations Feel the Hurt

Aug 23, 2023 1:13:24 PM By Stu Sjouwerman

A new report from Rapid7 has found that the number of ransomware attacks increased by 69% in the first half of 2023. Rapid7 incident response data found that at least 1500 organizations ...

LinkedIn Deception: How a Chinese Spy Tricked Thousands of UK Officials

Aug 23, 2023 10:35:27 AM By Stu Sjouwerman

In last few years, cyber espionage has taken a new form. A recent investigation by The Times has unveiled a Chinese intelligence officer's extensive use of LinkedIn to target UK ...

Phishing Tops the List as the Most Costly Initial Attack Vector in Data Breaches

Aug 23, 2023 8:59:37 AM By Stu Sjouwerman

After you come to grips with the massive average cost of a data breach to an enterprise organization measured in the millions, it’s time to look at the factors that increase – and lower – ...

Data Breach Costs in Healthcare Rise 53% to More than Double the Average

Aug 23, 2023 8:58:54 AM By Stu Sjouwerman

It appears that one of the most regulated industries also holds the title for the highest average data breach costs – coming in at just under $11 million per breach.

Deceptive Links, Brand Impersonation, and Identity Deception Top the List of Phishing Attack Tactics

Aug 23, 2023 8:58:43 AM By Stu Sjouwerman

As phishing attacks continue to dominate as an initial attack vector, new data shows that attackers maintain the use of tried-and-true techniques as the means to successful attacks.

Phishing Campaigns Targeting Microsoft Login Credentials Jump an Unprecedented 6100%

Aug 23, 2023 8:58:36 AM By Stu Sjouwerman

Monitoring of traffic to phishing pages hosted on the free hosting service Cloudflare R2 show an unheard of spike of 6100%, many going undetected by many security solutions due to the ...

Scammers Impersonate the Australian Tax Office

Aug 23, 2023 8:55:31 AM By Stu Sjouwerman

The Australian Taxation Office (ATO) has warned of an increase in SMS and email phishing attacks targeting taxpayers, News.com.au reports. The scams attempt to steal credentials or ...

CyberheistNews Vol 13 #34 [Must Know] Cybercriminals May Already Have Hacked Your LinkedIn Account. How to Secure.

Aug 22, 2023 9:00:00 AM By Stu Sjouwerman

[Eye-Opening] Increase of Phishing Attacks in Australia Should Alarm Organizations

Aug 21, 2023 9:12:47 AM By Stu Sjouwerman

Phishing attacks are on the rise in Australia, the Australian Broadcasting Corporation (ABC) reports.

Bloomberg Reports: Stealth QR Code Phishing Attack On Major US Energy Company

Aug 18, 2023 8:41:06 AM By Stu Sjouwerman

During my two years as the CEO of a Public Company, Bloomberg became one of my go-to sources for financial news. I am still subscribed and today found an interesting story from Drake ...

[Must Know] Cybercriminals May Already Have Hacked Your LinkedIn Account. How To Secure.

Aug 16, 2023 2:00:41 PM By Stu Sjouwerman

New reports show many LinkedIn users have reported complaints about accounts being taken over by bad actors.

Not Another Voter Registration Scam (But It Looks Like One)

Aug 16, 2023 2:00:38 PM By Stu Sjouwerman

The UK government’s voter registration website is causing confusion again, according to Ax Sharma at BleepingComputer. The site, hosted at a “.com” address, often makes users wonder if ...

Ransomware Attacks Surge as Generative AI Becomes a Commodity Tool in the Threat Actor’s Arsenal

Aug 16, 2023 2:00:17 PM By Stu Sjouwerman

According to a new report, cybercriminals are making full use of AI to create more convincing phishing emails, generating malware, and more to increase the chances of ransomware attack ...

Online Scams Targeting Individuals Double in a Single Quarter as Global Risk Rises

Aug 16, 2023 2:00:12 PM By Stu Sjouwerman

New analysis of the second quarter of this year makes it clear that individuals and organizations alike are at an increasing risk of web- and email-based scams.

Social Media Platforms Become Half of all Phishing Attack Targets

Aug 16, 2023 2:00:08 PM By Stu Sjouwerman

Social platforms are the current favorite target of cybercriminals, displacing financial institutions, providing cybercriminals with credentials to be used as launch points for further ...

Ransomware's Paradox: Why Falling Monetization Rates Are Accompanied by Soaring Ransom Payments - A Must-Read Analysis.

Aug 16, 2023 10:14:42 AM By Stu Sjouwerman

Grab a cup of coffee, and let's talk about something that's been making waves in the cybersecurity world: ransomware. You've probably heard about the alarming rise in ransom payments, but ...

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