KnowBe4 Blog

Keeping you informed. Keeping you aware.
Stay on top of the latest in human and agent security including social and prompt engineering, ransomware and phishing attacks.

Stu Sjouwerman

Founder and Executive Chairman

Stu Sjouwerman (pronounced “shower-man”) is the Founder and Executive Chairman 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.


Recent Posts

AP Stylebook Data Breach Compromises Customer Personal Information

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.

Phishing Scammers are Using Artificial Intelligence To Create Perfect Emails

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

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

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

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

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

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

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

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.