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

Vanishing Act: The Secret Weapon Cybercriminals Use in Your Inbox

Sep 21, 2023 11:57:30 AM By Stu Sjouwerman

Researchers at Barracuda describe how attackers use legitimate email inbox rules to control compromised accounts and evade detection.

Scam-as-a-Service Classiscam Expands Impersonation in Attacks to Include Over 250 Brands

Sep 20, 2023 4:40:49 PM By Stu Sjouwerman

Now entering its third year in business, the phishing platform, Classicam, represents the highest evolution of an “as a service” cybercrime, aiding more than 1000 attack groups worldwide.

USPS Customers Become the Latest Target of the Chinese Smishing Group Called “Smishing Triad”

Sep 20, 2023 4:40:46 PM By Stu Sjouwerman

A new SMS-based phishing attack uses a smishing kit-as-a-service to impersonate the U.S. Postal Service.

Tighter Policies Mixed with Higher Costs Are Creating a Cyber Insurance Gap

Sep 20, 2023 4:40:42 PM By Stu Sjouwerman

New data on the state of cyber insurance shows that it’s becoming more difficult to get a policy, and the organizations obtaining one share that circumstances could cause denial of claims.

TikTok Impersonations of Elon Musk Scam Victims of Their Bitcoin

Sep 20, 2023 9:07:37 AM By Stu Sjouwerman

There’s been a surge of Elon Musk-themed cryptocurrency scams on TikTok, BleepingComputer reports. The scammers inform the victims that they can claim their reward after spending a small ...

Data Breach Costs Rise, But Cybersecurity Pros Still Take Risks

Sep 20, 2023 8:10:03 AM By Stu Sjouwerman

The latest data from IBM shows that the average cost of a data breach has gone up by 2% to a whopping $4.45 million. You would think that in the cybersecurity industry, people would be ...

China's Cyber Offensive: FBI Director Reveals Unmatched Scale of Hacking Operations

Sep 19, 2023 2:40:38 PM By Stu Sjouwerman

WASHINGTON – In a startling revelation, FBI Director Chris Wray disclosed at a recent conference that China's cyber espionage capabilities are so extensive, they bigger than the efforts ...

Romance Scams That Run Your Crypto Wallet Dry

Sep 19, 2023 9:31:19 AM By Stu Sjouwerman

Scammers are using dating sites to lure victims into phony cryptocurrency investment schemes, according to Sean Gallagher at Sophos.

CyberheistNews Vol 13 #38 No Dice for MGM Vegas As It Battles Ransomware Attack Downtime

Sep 19, 2023 9:00:00 AM By Stu Sjouwerman

The International Joint Commission Falls Victim to Ransomware Attack; 80GB Of Data Stolen

Sep 18, 2023 12:04:34 PM By Stu Sjouwerman

The International Joint Commission (ICJ), an organization that handles water issues along the Canada–United States border, was hit by a ransomware attack, the Register reports.

[New PhishER Feature] Immediately Add User-Reported Email Threats to Your M365 Blocklist

Sep 18, 2023 10:43:12 AM By Stu Sjouwerman

Now there's a super easy way to keep malicious emails away from all your users through the power of the KnowBe4 PhishER platform!

Mark Cuban’s MetaMask wallet drained nearly $900,000 in suspected phishing attack

Sep 16, 2023 2:46:07 PM By Stu Sjouwerman

Dallas Mavericks owner and well-known investor Mark Cuban reportedly lost nearly $900,000 in a phishing attack targeting his MetaMask cryptocurrency wallet.

91% of Cybersecurity Professionals Have Experienced Cyber Attacks that Use AI

Sep 15, 2023 10:21:09 AM By Stu Sjouwerman

A new report takes an exhaustive look at how cybersecurity professionals see the current and future state of attacks, and how well vendors are keeping up.

New Phishing Attack Uses Social Engineering to Impersonate the National Danish Police

Sep 15, 2023 10:20:56 AM By Stu Sjouwerman

A malwareless and linkless phishing attack uses sextortion and the threat of legal action to get the attention of potential victims and get them to respond.

Hacker Deepfakes Employee's Voice in Phone Call to Breach IT Company

Sep 15, 2023 10:20:40 AM By Stu Sjouwerman

Last month, Retool, a business software development company, fell victim to a sophisticated cyberattack that compromised 27 of its cloud customers.

New Scam Impersonates QuickBooks to Steal Credentials, Extract Money

Sep 15, 2023 10:20:14 AM By Stu Sjouwerman

Establishing urgency through a false need to “upgrade” or lose services, this new attack takes advantage of the widespread use of the popular accounting app to attract victims.

Microsoft (Once Again) Tops the List of Most Impersonated Brands in 2023

Sep 15, 2023 10:19:58 AM By Stu Sjouwerman

Out of the over 350 brands regularly impersonated in phishing attacks, Microsoft continues to stand out because they provide attackers with one unique advantage over other brands.

Board Members' Lack of Security Awareness Puts Businesses at Risk of Cyber Attacks, Finds Savanti Report

Sep 15, 2023 10:19:45 AM By Stu Sjouwerman

A report from cybersecurity consultancy Savanti reveals that board members are facing challenges in understanding cyber risks, and this has important implications for businesses.

No Dice for MGM Las Vegas as It Battles Fallout from Ransomware Attack After a 10-minute Vishing Scam

Sep 14, 2023 4:03:51 PM By Stu Sjouwerman

DEVELOPING STORY. SCROLL DOWN FOR MORE.

MGM Suffers Ransomware Attack that Started with a Simple Helpdesk Call

Sep 14, 2023 3:56:43 PM By Stu Sjouwerman

As the aftermath unfolds, the details around the recent attack on MGM Resorts provides crucial insight into the attacks impact, who’s responsible, and how it started.

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