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

FBI Warns that Financial Events are Occasions for Extortion

Nov 3, 2021 10:29:36 AM By Stu Sjouwerman

The US Federal Bureau of Investigation (FBI) has warned that ransomware operators are targeting companies that are going through financial events. The timing is designed to elicit and ...

CyberheistNews Vol 11 #43 [HEADS UP] Nuclear Ransomware 3.0: It Is About To Get Much Worse

Nov 2, 2021 9:36:39 AM By Stu Sjouwerman

Not that You Would, but Looking for a Sugar Daddy's a Bad Idea

Nov 2, 2021 8:56:59 AM By Stu Sjouwerman

Scammers are using social media to target young women with offers to be their “sugar daddy,” according to Laura Josepha Zimmermann at Avast. Zimmermann received a message on Instagram ...

[On-Demand Webinar] Hacking Your Organization: 7 Steps Cybercriminals Use to Take Total Control of Your Network

Nov 1, 2021 9:17:10 AM By Stu Sjouwerman

The scary fact is that the majority of data breaches are caused by human error. With so many technical controls in place hackers are still getting through to your end users. How are they ...

Misconceptions and Assumptions about Cybersecurity

Nov 1, 2021 9:17:05 AM By Stu Sjouwerman

Misconceptions about cybersecurity can lead to employees falling for preventable attacks, according to Jayant Chakravarti at Toolbox. One misconception is that Apple devices are ...

Multi-Stage Vishing Attacks are Coming to an Inbox Near You

Oct 29, 2021 2:16:15 PM By Stu Sjouwerman

New attacks initially coming in via email are directing victims to make phone calls to attacker-controlled call centers in order to provide banking and credit card details.

Eight Romance Phishing Scammers with Ties to Nigerian Organized Crime Arrested After Stealing Nearly $7 Million

Oct 29, 2021 2:02:43 PM By Stu Sjouwerman

This latest arrest by the South African Police Service (SAPS) demonstrates how romance scams that have been around for decades remain alive and well… and profitable.

Over Half of all Impersonation Attacks Target Non-Executive Employees

Oct 29, 2021 2:02:26 PM By Stu Sjouwerman

A new report shows how cybercriminals focus on users that are less vigilant and more prone to falling for social engineering and impersonation tactics designed to gain access to finances.

KnowBe4's Q3 2021 Top-Clicked Phishing Email Report Includes New Global Data [INFOGRAPHIC]

Oct 29, 2021 10:39:26 AM By Stu Sjouwerman

KnowBe4's latest quarterly report on top-clicked phishing email subjects is here. We are now looking at the top categories globally, general subjects (in the United States and Europe, ...

Cybercriminals are using Craigslist email notifications to send phishing links

Oct 27, 2021 9:16:47 AM By Stu Sjouwerman

Cybercriminals are using Craigslist email notifications to send phishing links, according to Roger Kay at INKY. The emails contain links to download a document with malicious macros.

CyberheistNews Vol 11 #42 [EYE OPENER] Why Security Awareness Testing Alone Isn't Enough

Oct 26, 2021 9:41:20 AM By Stu Sjouwerman

Russian SolarWinds Hackers Newly Attack Supply Chain With Password-Spraying and Phishing

Oct 26, 2021 9:38:10 AM By Stu Sjouwerman

Researchers at Microsoft have observed an attack phishing campaign by Russia’s SVR that’s targeting resellers and managed service providers. Microsoft tracks this threat actor as ...

New Ransomware Variant Brings with it the Dawn of the Era of “Quintuple-Extortion”

Oct 26, 2021 8:44:23 AM By Stu Sjouwerman

A ransomware gang with a new variant is trailblazing us towards the future of ransomware by making threats that go well beyond the simple ransom transactions of yesterday.

Perry Carpenter Interviews with Safety Detectives

Oct 26, 2021 8:44:02 AM By Stu Sjouwerman

Our very own Perry Carpenter, KnowBe4's Chief Evangelist and Strategy Officer, recently interviewed with Aviva Zacks of Safety Detectives.

Celebrity Hacks and the Frenzy of Renown

Oct 25, 2021 10:50:10 AM By Stu Sjouwerman

Avast offers a look at incidents in which celebrities have been the victim of social engineering attacks. The firm notes that while celebrities are higher profile targets, attackers use ...

Phishing Campaign Targets Organizations in India and Afghanistan

Oct 21, 2021 9:31:57 AM By Stu Sjouwerman

A threat actor based in Pakistan is targeting entities in India and Afghanistan with malware-laden websites, according to researchers at Cisco Talos.

New Impersonation Attack Demonstrates That Threat Actors Don’t Need to Get the Logo Correct

Oct 20, 2021 10:15:50 AM By Stu Sjouwerman

A new trend in social engineering and impersonation emerges as cybercriminals take advantage of a user’s inability to properly identify fake corporate logos in phishing attacks.

Cybercriminal Group SnapMC Takes a Page from Ransomware Gangs in Data Breach-Turned-Extortion Attacks

Oct 20, 2021 10:15:40 AM By Stu Sjouwerman

New analysis of attacks shows threat actors that traditionally focus on stealing data are now utilizing extortion as their monetization strategy, converging tactics with ransomware ...

Deepfake Technology is Cloning a Voice from the C-Suite

Oct 20, 2021 10:15:27 AM By Stu Sjouwerman

Criminals used deepfake technology to steal $35 million from a company in the United Arab Emirates, Forbes reports. The attackers used “deep voice” technology to spoof the voice of a ...

Why Security Awareness Testing Alone Isn’t Enough

Oct 19, 2021 1:33:12 PM By Stu Sjouwerman

Here is a story from one of our customers who wants to help other organizations like you strengthen their cybersecurity practices. Find out about the important lessons they learned when ...

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