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

Cyber Insurance Industry Wrongly Hedging Its Bets on MFA

Aug 10, 2021 8:53:19 AM By Stu Sjouwerman

Because of ransomware attacks, I have been covering the cybersecurity insurance industry for a few years, including here. I even have a whole chapter dedicated to cybersecurity insurance ...

FTC Warns of Unemployment Insurance Phishing Scheme

Aug 10, 2021 8:22:39 AM By Stu Sjouwerman

The US Federal Trade Commission (FTC) has issued a warning about scams targeting unemployed people via text messages.

Your KnowBe4 Fresh Content Updates from July

Aug 6, 2021 3:35:34 PM By Stu Sjouwerman

With 25 new pieces of training content added this month, check out the always fresh content update highlights and new features from the month of July.

BEC Attacks Are Targeting Lower-Level Employees

Aug 5, 2021 8:48:30 AM By Stu Sjouwerman

A new report from Barracuda found that most business email compromise (BEC) attacks are now targeting employees who aren’t in executive or financial roles.

[On-Demand Webinar] Open Source Intelligence (OSINT): Learn the Methods Bad Actors Use to Hack Your Organization

Aug 4, 2021 2:04:43 PM By Stu Sjouwerman

The digital age has unleashed massive amounts of personal and organizational data on the internet. No breaking through firewalls or exploiting vulnerabilities required.

79% of Employees Have Knowingly Engaged in Risky Online Activities in the Past Year

Aug 4, 2021 1:59:07 PM By Stu Sjouwerman

With employees not believing that it’s important to personally worry about cyber security risks, they also tend to believe they’re not a target, new data suggest as the reason for the ...

You Knew It Would Eventually Happen: Ransomware Lawsuits

Aug 4, 2021 1:58:09 PM By Stu Sjouwerman

Organizations that have fallen victim to a ransomware attack are now being sued by impacted employees and customers alike who are citing loose cybersecurity was in place.

Egress: 73% of Orgs Were Victims of Phishing Attacks in the Last Year

Aug 4, 2021 9:23:12 AM By Stu Sjouwerman

A survey sponsored by Egress found that 94% of organizations suffered insider data breaches over the past year. The survey offers the following results:

CyberheistNews Vol 11 #30 [Eye Opener] Image Inversion as a New Phishing Technique

Aug 3, 2021 9:40:05 AM By Stu Sjouwerman

Ransomware Extortion Attacks Continue to Rise in Frequency as Ransom Payments Decrease by 40%

Aug 3, 2021 9:39:41 AM By Stu Sjouwerman

Ransomware is having a very odd second quarter of the year as new variants enter the game governments finally take notice and insurers tighten their underwriting requirements.

Phishing Attacks Target IT Professionals More Than Any Other Organizational Role

Aug 3, 2021 9:38:45 AM By Stu Sjouwerman

New data from security vendor Ivanti suggests that cybercriminals are focusing in on those in IT roles as targets of phishing attacks, with many admitting to falling victim for these ...

How Social Engineers Use Social Media

Aug 3, 2021 9:38:30 AM By Stu Sjouwerman

People need to be aware of how their social media posts can be used against them, according to Darren Millar, senior vice president of operations at PiiQ Media. In an article for ...

[HEADS UP] Microsoft Warns of Sneaky Phishing Campaign

Aug 3, 2021 8:34:53 AM By Stu Sjouwerman

Microsoft's Security Intelligence team recently sent an alert to Office 365 users and admins to watch out for a suspicious phishing email that uses spoofed sender addresses.

New Phishing Campaign Uses Blackmail to Lure Victims

Aug 2, 2021 8:42:02 AM By Stu Sjouwerman

Bitdefender has observed a phishing campaign that tries to blackmail users into sending money by claiming their computer has been hacked. The emails contain real passwords that have been ...

Visit KnowBe4 at Black Hat USA 2021 - Virtual & In Person Event

Jul 30, 2021 11:05:14 AM By Stu Sjouwerman

Are you attending Black Hat USA 2021 (either in person or virtually) ? Be sure to stop by the KnowBe4 booth August 4th - 5th to find out how to secure your last line of defense: USERS.

Two of the Most Common and Successful Ransomware Attack Methods are Exposed

Jul 30, 2021 9:50:19 AM By Stu Sjouwerman

Researchers at Coveware recently analyzed ransomware attacks during Q2 of this year and noticed a similar trend in ransomware attack methods by cybercriminals.

Ransomware Attacks This Year Are Already Higher Than 2020

Jul 30, 2021 9:50:11 AM By Stu Sjouwerman

According to the 2021 Cyber Threat Report by SonicWall, 304.7 million ransomware attacks occured in the first half of 2021, already surpassing the total number of ransomware attacks for ...

Happy 22nd Annual SysAdmin Day from KnowBe4!

Jul 30, 2021 8:24:46 AM By Stu Sjouwerman

It’s the 22nd annual SysAdmin Day, a day when we celebrate all of the incredible System Administrators! While your job may not be easy (and sometimes not glamorous), your work on the ...

Scammers Use Milanote App to Host Phishing Content and Avoid Detection by Secure Email Gateways

Jul 29, 2021 2:40:16 PM By Stu Sjouwerman

The “Evernote for creatives” collaborative platform is being used to legitimately host malicious links that point victims to phishing links, bypassing detection mechanisms.

The World’s Most Impersonated Brand in Phishing Attacks Is… (and it’s NOT Microsoft!)

Jul 29, 2021 2:39:47 PM By Stu Sjouwerman

Despite so much news surrounding phishing attacks pretending to be from Microsoft’s Office 365 platform, a new report from Vade Secure provides a global perspective to impersonation.

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