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

North Korean Threat Actors Target Software Developers With Phony Job Interviews

May 1, 2024 1:57:24 PM By Stu Sjouwerman

Suspected North Korean threat actors are attempting to trick software developers into downloading malware during phony job interviews, according to researchers at Securonix.

FBI Warns of Verification Scams Targeting Dating Site Users

Apr 30, 2024 1:42:11 PM By Stu Sjouwerman

The US Federal Bureau of Investigation (FBI) has issued an advisory warning of a scam campaign targeting users of online dating platforms. The scammers are attempting to trick users into ...

How New College Graduates Can Avoid Increasingly Personalized Job Scams

Apr 30, 2024 1:42:05 PM By Stu Sjouwerman

For many fresh out of college, the drive to land that first professional role is a top priority. Yet, new graduates can be exposed to sophisticated scams that can jeopardize not just ...

CyberheistNews Vol 14 #18 [Wake Up Call] A Fresh Nespresso Domain Hijack Brews an MFA Phishing Scheme

Apr 30, 2024 9:00:00 AM By Stu Sjouwerman

Targeted Smishing Attacks by Threat Group “The Com” On The Rise

Apr 29, 2024 2:03:09 PM By Stu Sjouwerman

Cyber activity by the group "The Com," which leverages (SIM) swapping, cryptocurrency theft, swatting, and corporate intrusions, is increasing.

Phishing Campaigns Spoof the U.S. Postal Service

Apr 29, 2024 2:03:02 PM By Stu Sjouwerman

Researchers at Akamai have found that phishing sites impersonating the U.S. Postal Service get as much traffic as the real USPS website.

Your KnowBe4 Compliance Plus Fresh Content Updates from April 2024

Apr 29, 2024 8:00:00 AM By Stu Sjouwerman

Check out the April updates in Compliance Plus so you can stay on top of featured compliance training content.

How an Athletic Director Exploited AI to Frame a Principal with Fabricated Racist Comments

Apr 26, 2024 10:15:06 AM By Stu Sjouwerman

In an unsettling turn of events, a high school athletic director in Maryland is accused of using artificial intelligence (AI) in a morally horrible manner.

US Justice Department Accuses Iranian Nationals of Launching Spear Phishing Attacks

Apr 26, 2024 8:20:23 AM By Stu Sjouwerman

The US Department of Justice has indicted four Iranian nationals for allegedly launching spear phishing attacks against the US government and defense contractors. In one instance, the ...

Your KnowBe4 Fresh Content Updates from April 2024

Apr 26, 2024 8:00:00 AM By Stu Sjouwerman

Check out the 33 new pieces of training content added in April, alongside the always fresh content update highlights, events and new features.

New Report Finds That 27% of Small Businesses Would Be Put Out of Business By A Cyber Attack

Apr 25, 2024 8:23:51 AM By Stu Sjouwerman

According to the U.S. Chamber of Commerce, the pressure is mounting on small and medium businesses (SMBs), as they must get their cyber preparedness correct or the next cyber attacks ...

AI-Assisted Phishing Attacks Are on the Rise

Apr 25, 2024 8:23:39 AM By Stu Sjouwerman

Threat actors are increasingly using generative AI tools to improve their phishing campaigns, according to a new report from Zscaler.

Phishing Campaign Exploits Nespresso Domain

Apr 23, 2024 11:37:04 AM By Stu Sjouwerman

Attackers are launching phishing campaigns using an open-redirect vulnerability affecting a website belonging to coffee machine company Nespresso, according to researchers at Perception ...

Global Optics Provider Hit with Ransomware Attack and a $10M Ransom

Apr 23, 2024 11:37:01 AM By Stu Sjouwerman

Global optics manufacturer Hoya had business operations at its headquarters and several business divisions impacted and is now facing a “No Negotiation / No Discount Policy” $10 million ...

USPS Surges to Take Top Spot as Most Impersonated Brand in Phishing Attacks

Apr 23, 2024 10:00:21 AM By Stu Sjouwerman

New data shows phishing attacks are deviating from the traditional focus on technology and retail sectors and are opting for alternate brands with widespread appeal.

CyberheistNews Vol 14 #17 [HEADS UP] LastPass Warns of a 'CEO' Deepfake Phishing Attempt

Apr 23, 2024 9:00:00 AM By Stu Sjouwerman

[NEW GAME] The Inside Man: New Recruits Game

Apr 22, 2024 4:21:06 PM By Stu Sjouwerman

We released a new game, now available on the KnowBe4 Modstore. I played it myself and this is recommended for all Inside Man fans! "Mark Shepherd, The Inside Man himself, is recruiting a ...

4 out of 5 of Physicians Were Impacted by February’s Cyber Attack on Change Healthcare

Apr 22, 2024 9:32:58 AM By Stu Sjouwerman

A new survey of physicians details the devastating impact of the Change Healthcare cyber attack on the healthcare sector.

Kudos! CEO Reveals He Got Phished

Apr 22, 2024 9:31:26 AM By Stu Sjouwerman

The other day I was participating in a company’s employee meeting when the CEO revealed he had been “caught” that morning by a real phishing attack email.

Half of U.K. Businesses Experienced a Security Breach or Cyber Attack in the Last 12 Months

Apr 19, 2024 9:04:17 AM By Stu Sjouwerman

Analysis of cyber attacks targeting U.K. organizations highlights the effectiveness of social engineering attacks and the fact that businesses are missing the mark on how to stop it.

Security Awareness Training Blog

View Topics