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

Malvertising Targets Chinese-Speaking Users

Jan 29, 2024 2:47:47 PM By Stu Sjouwerman

Researchers at Malwarebytes warn that a malvertising campaign is targeting Chinese-speaking users with phony ads for encrypted messaging apps. The ads impersonate apps that are restricted ...

Identify Weak User Passwords With KnowBe4’s Enhanced Weak Password Test

Jan 29, 2024 2:45:47 PM By Stu Sjouwerman

Passwords are part of every organization’s security risk profile. Just one weak password with access to an organization’s critical systems can cause a breach, take down a network or ...

Scammers Use Airdrops to Lure Users With Phony NFTs

Jan 29, 2024 8:42:17 AM By Stu Sjouwerman

Researchers at Check Point warn that scammers are using airdrops to distribute phony non-fungible tokens (NFTs) that direct users to malicious sites.

Bravo Host Andy Cohen Scammed Out of a “Sizable” Amount of Money by Fraudsters Posing as the Bank

Jan 29, 2024 8:41:52 AM By Stu Sjouwerman

Bravo host Andy Cohen tells how he became the victim of an impersonation scam that gave scammers access to control his bank account.

Your KnowBe4 Compliance Plus Fresh Content Updates from January 2024

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

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

Your KnowBe4 Fresh Content Updates from January 2024

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

Check out the 37 new pieces of training content added in January, alongside the always fresh content update highlights, events and new features.

Houston, We Have a 2024 China Problem

Jan 26, 2024 7:02:27 AM By Stu Sjouwerman

Russia is not the only global problem that democracy has to deal with. The Chinese regime ran large influence campaigns, attempting mass social engineering in the U.S. 2022 midterm ...

The Number of Ransomware Attack Victims Surge in 2023 to over 4000

Jan 25, 2024 12:43:48 PM By Stu Sjouwerman

The surge in Ransomware-as-a-Service affiliates is likely the reason behind the dramatic increase in the number of victimized organizations, with all indicators suggesting that this trend ...

HP Enterprise Reveals It was hacked by the same Russians that broke into Microsoft

Jan 25, 2024 11:24:46 AM By Stu Sjouwerman

In a new SEC disclosure, Hewlett Packard Enterprise (HPE) announced on Wednesday that it fell prey to the same Russian intelligence group, known as Midnight Blizzard or Cozy Bear, that ...

New Evasive Phishing Technique “Legacy URL Reputation Evasion" (LURE)

Jan 25, 2024 8:59:50 AM By Stu Sjouwerman

Researchers at Menlo Security observed a 198% increase in browser-based phishing attacks over the past six months.

Social Engineering Attacks Rising in the Trucking Industry

Jan 25, 2024 8:59:28 AM By Stu Sjouwerman

Spear phishing and voice phishing (vishing) are on the rise in the trucking industry, according to a new report from the National Motor Freight Traffic Association (NMFTA).

New Deepfake Video Scam has “Taylor Swift” Offering Free French Cookware

Jan 25, 2024 8:59:23 AM By Stu Sjouwerman

A new wave of ads utilizing video of well-known celebrities seemingly promoting video games, fake giveaways, and more are starting to popup, and fans are falling for this trap.

Use of Generative AI Apps Jumps 400% in 2023, Signaling the Potential for More AI-Themed Attacks

Jan 24, 2024 8:20:31 AM By Stu Sjouwerman

As the use of Cloud SaaS platforms of generative AI solutions increases, the likelihood of more “GPT” attacks used to gather credentials, payment info and corporate data also increases.

North Korean Threat Actor Targeting Cybersecurity Researchers With Spear Phishing Attacks

Jan 24, 2024 8:20:21 AM By Stu Sjouwerman

A suspected North Korean state-sponsored threat actor called “ScarCruft” is launching spear phishing attacks against cybersecurity professionals, according to researchers at SentinelOne.

Myth of Massive Data Breach Busted: Big Headlines Mask a Minor Threat

Jan 23, 2024 4:21:14 PM By Stu Sjouwerman

Ok, I'll admit it, I was swept up in the moment last week and wrote a short blog post that more or less summarized the tsunami of news about that huge data breach initially reported by ...

CyberheistNews Vol 14 #04 'Swatting' Becomes the Latest Extortion Tactic in Ransomware Attacks

Jan 23, 2024 9:48:02 AM By Stu Sjouwerman

Facebook Phishing Scams Target Concerned Friends and Family

Jan 22, 2024 2:06:13 PM By Stu Sjouwerman

BleepingComputer describes a phishing scam that’s been running rampant on Facebook for the past several months, in which threat actors use hacked accounts to post links to phony articles ...

Russian State-Sponsored Threat Actor Targets High Profile Individuals in Phishing Campaign

Jan 22, 2024 2:00:15 PM By Stu Sjouwerman

The Russian state-sponsored threat actor “COLDRIVER” is launching phishing campaigns against “high profile individuals in NGOs, former intelligence and military officers, and NATO ...

Russian Hackers Win Big: Microsoft's Senior Exec Team Emails Breached

Jan 20, 2024 9:45:06 AM By Stu Sjouwerman

In a Friday regulatory filing, Microsoft has reported that its corporate email accounts were compromised by a Russian state-sponsored hacking group known as Midnight Blizzard, also ...

Facebook Work-From-Home “Job” Posting Scam Goes the Extra Mile to Trick Victims

Jan 19, 2024 12:50:46 PM By Stu Sjouwerman

A new job posting scam found by IT security company Qualysys is focused on capturing victim’s identity details, accessing victim’s Facebook accounts, and committing fraud. In this new ...

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