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

Ingenious New Attack Technique Uses Windows Store to Install Malware

Dec 2, 2021 8:51:44 AM By Stu Sjouwerman

Just when you thought threat actors couldn’t find another way to launch a dropper, a new method has surfaced that takes advantage of native functionality found in Windows 10.

91% of All Baiting Attacks Use Gmail to Collect Intel on Potential Victims

Dec 2, 2021 8:51:29 AM By Stu Sjouwerman

This rudimentary form of phishing contains no malicious links or attachments but serves a very important purpose for cybercriminals and scammers looking to better target victims.

[On-Demand Webinar] When Cybercriminals Hide in Plain Sight: Hacking Platforms You Know and Trust

Dec 1, 2021 1:32:07 PM By Stu Sjouwerman

Today’s hackers are concealing their attacks in places you wouldn’t expect… utilizing tools your users know and trust to deliver their malicious payloads. From hijacked single sign-on ...

Holiday Shopping and Phishing-as-a-Service

Dec 1, 2021 9:22:12 AM By Stu Sjouwerman

Researchers at Egress observed a massive increase in phishing kits in the run-up to Black Friday, particularly those impersonating Amazon.

Bitcoin Scam Videos on Instagram are Part of an Elaborate Account Takeover Scam

Nov 30, 2021 10:55:20 AM By Stu Sjouwerman

This elaborate scam uses social engineering to trick victims into sending the hacker Bitcoin while holding Instagram accounts hostage.

Phishing Attacks Smash All Records in Q3 2021 With the Highest Monthly Number of Attacks Ever

Nov 30, 2021 10:55:12 AM By Stu Sjouwerman

New data shows the business of phishing is moving “up and to the right” in nearly every way measurable, indicating a serious problem as threat actors continue to see growing success.

Mobile Phishing Attacks Surge 161% in the Energy Industry

Nov 30, 2021 10:55:04 AM By Stu Sjouwerman

The need for increased mobile security in the Energy sector has become evident with new data highlighting why these phishing attacks are occurring and effective ways to stop them.

Data Breach Costs Increase by $1 Million When Remote Workers Are Involved

Nov 30, 2021 10:54:57 AM By Stu Sjouwerman

You already knew remote workers increase the risk of cyberattack. New data spells out exactly what the impact of a remote workforce is on data breaches and the cost to remediate.

CyberheistNews Vol 11 #47 [Heads Up] New Dangerous and Persistent "Metamorphic" Malware Strain Called Tardigrade

Nov 30, 2021 9:24:37 AM By Stu Sjouwerman

Spear Phishing Campaign Targets North Korean Defectors

Nov 30, 2021 8:51:39 AM By Stu Sjouwerman

A state-sponsored threat actor is sending spear phishing emails to North Korean defectors and also to journalists who cover matters related to North Korea, according to researchers at ...

Phishing Reported in IKEA’s Internal Email System

Nov 29, 2021 10:32:03 AM By Stu Sjouwerman

IKEA has been working to contain a continuing phishing campaign that’s afflicting the furniture and houseware chain’s internal email system. BleepingComputer describes it as a ...

John Scimone, SVP and Chief Security Officer at Dell Technologies, says “security is everyone's job.”

Nov 27, 2021 8:47:39 AM By Stu Sjouwerman

Organizations need to build a culture of security in order to defend themselves against cyberattacks, according to John Scimone, Senior Vice President and Chief Security Officer at Dell ...

FBI: Cyber Attacks Target Organizations Involved in Mergers and Acquisitions

Nov 25, 2021 8:55:55 AM By Stu Sjouwerman

A new notification from the FBI warns organizations of attacks at the perfect time when organizations are spending money, new people are being introduced, and operations are in flux.

Email Classified as ‘Malicious’ by Employees Has Increased by 35% in the Last Year

Nov 25, 2021 8:52:37 AM By Stu Sjouwerman

New data shows Phishing, Vishing, Social Media attacks, and Microsoft 365 credential attacks are all on the rise as more users are demonstrating savviness around identifying malicious ...

Phishing Attacks Impersonating Amazon Continue, Raising Concerns on the Cusp of Black Friday and the Holidays

Nov 25, 2021 8:52:13 AM By Stu Sjouwerman

New phishing attacks in the form of impersonated Amazon order confirmation emails cause potential victims to make phone calls and give up credit card details.

Planning on Relaxing During the Holiday? Think Again – Ransomware Attacks May Have You Working Over a Holiday Break!

Nov 25, 2021 8:51:34 AM By Stu Sjouwerman

New data shows a majority of organizations experience ransomware attacks during holiday breaks, disrupting operations and your time away from work!

Avoid Donating to Charity Scammers During Giving Tuesday 2021

Nov 23, 2021 5:07:27 PM By Stu Sjouwerman

Giving Tuesday is a great way for organizations and people to give back. However, this gives cybercriminals opportunities to take advantage of you with charity scams.

[Scam of the Week] Black Friday & Cyber Monday Cybersecurity Tips 2021

Nov 23, 2021 12:40:00 PM By Stu Sjouwerman

Cybercriminals are at it again with holiday phishing scams. Because of the popularity of online shopping, retailers' online Black Friday deals attract more and more scammers every year. ...

SEC Warns of Spoofed Emails Impersonating Their Employees

Nov 23, 2021 10:08:11 AM By Stu Sjouwerman

Scammers are impersonating the US Securities and Exchange Commission (SEC) with spoofed phone calls and other communications that attempt to steal money and personal information from ...

New Dangerous and Persistent "Metamorphic" Malware Strain Called Tardigrade

Nov 23, 2021 9:24:52 AM By Stu Sjouwerman

Michael Kan at PCMag reported on this new strain of Windows malware. It can constantly adapt to avoid detection and was first found targeting the biotech industry, including the ...

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