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

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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.

Can You Guess Common Phishing Themes in Southeast Asia?

Sep 13, 2023 9:07:52 AM By Stu Sjouwerman

Researchers at Cyfirma outline trends in phishing campaigns around the world, finding that Singapore is disproportionately targeted by phishing attacks.

AP Stylebook Data Breach Compromises Customer Personal Information

Sep 12, 2023 2:32:48 PM By Stu Sjouwerman

The Associated Press (AP) has disclosed a data breach affecting the legacy AP Stylebook website that led to phishing attacks against impacted customers, BleepingComputer reports.

CyberheistNews Vol 13 #37 Scary New IT Admin Attack Exposes Your MFA Weakness

Sep 12, 2023 9:00:00 AM By Stu Sjouwerman

Phishing Scammers are Using Artificial Intelligence To Create Perfect Emails

Sep 12, 2023 8:00:00 AM By Stu Sjouwerman

Phishing attacks have always been detected through broken English, but now generative artificial intelligence (AI) tools are eliminating all those red flags. OpenAI ChatGPT, for instance, ...

Cybercriminals Selling "Golden Tickets" to Phish Microsoft 365... $500,000 in Sales in 10 Months

Sep 12, 2023 7:45:00 AM By Stu Sjouwerman

In the movie, "Willy Wonka and the Chocolate Factory," kids unwrap chocolate bars in hopes of winning a golden ticket, giving the holder an inside tour of the sugar factory. The W3LL ...

Microsoft Teams Phishing Campaign Distributes DarkGate Malware

Sep 11, 2023 8:55:42 AM By Stu Sjouwerman

Researchers at Truesec are tracking a phishing campaign that’s distributing the DarkGate Loader malware via external Microsoft Teams messages.

[dot]US Domain Exploited for Phishing

Sep 8, 2023 8:14:23 AM By Stu Sjouwerman

The Interisle Consulting Group has published a paper looking at the phishing landscape in 2023, KrebsOnSecurity reports. Notably, Interisle found that the .us top-level domain is being ...

Organizations Tie Executive Pay to Cybersecurity Performance Hoping To Enhance Protection Against Hackers

Sep 8, 2023 8:13:59 AM By Stu Sjouwerman

Organizations have started to recognize the importance of tying executive pay to cybersecurity metrics. This practice is gaining traction among the largest U.S. companies, with nine ...

New Telekopye Phishing Toolkit Uses Telegram-Based Bots To Turn Novice Scammers into Experts

Sep 8, 2023 8:13:13 AM By Stu Sjouwerman

The Telekopye toolkit allows scammers to create phishing websites, send fraudulent SMS messages and emails, and target popular Russian and non-Russian online marketplaces.

Brand Impersonation Hits a New High with as Many as 73 Lookalike Domains Per Brand

Sep 8, 2023 8:12:44 AM By Stu Sjouwerman

The use of lookalike domains has reached critical mass with not just one counterfeit website, but many.

Ransomware Attacks Speed up 44% Leaving Less Time for Detection and Response

Sep 8, 2023 8:12:00 AM By Stu Sjouwerman

New data suggests that the gangs and toolkits behind current ransomware attacks are materially improving their abilities, resulting in a speeding up of attacks before defenses kick in.

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