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

New Data Covers How the Retail Market is at Greater Risk of Industry-Specific Cyberthreats

A new analysis of the retail market’s threat landscape discusses the challenges faced by this industry and what threat tactics are being used to take advantage of retail’s cyber ...

Digital Skimming Increases by 50%, Just in Time for the Holiday Season

Security researchers identify growth in the use of an ongoing cyberskimming campaign that involves compromising legitimate website checkout code.

Phishing Attacks Expected to More Than Double During the Black Friday and Cyber Monday Shopping Week

Another day, another warning about holiday scams! Lookout Inc., a data-centric cloud security company, is warning employees and businesses that phishing attacks are expected to more than ...

Visa Warns of Increased Phishing Scams During Holiday Season

Visa Payment Fraud Disruption (PFD) expects phishing attacks to increase between November 2023 and January 2024. Findings in its Holiday Edition Threats Report outline the popular fraud ...

Old Bloomberg Crypto Account Bio Link Used in Discord Phishing Attack

Scammers used an outdated link found in an X (formerly Twitter) account belonging to Bloomberg Crypto to send users to a phishing site designed to steal Discord credentials, ...

73% of Organizations Affected by Ransomware Attacks Globally in 2023, According to Statista

I recently wrote about how 1 in 34 organizations globally has experienced an attempted ransomware attack. But that statistic doesn’t provide enough context around the impact felt by the ...

With Expected Increases of Holiday Sales Comes Similar Expectations of More Cyber Scams

If increases in cyberattacks this year are any indication of what to expect in the next six weeks of holiday shopping, we should expect a massive uptick in holiday-related scams.

Cybercrime Group "Scattered Spider" is a Social Engineering Threat

The US Cybersecurity and Infrastructure Security Agency (CISA) and the FBI have released a joint Cybersecurity Advisory describing the Scattered Spider cybercriminal gang’s activities.

KnowBe4 Integrates With Cisco Duo To Streamline Secure Sign Ins

Social engineering remains one of the top attack vectors that cybercriminals use to execute malicious acts. KnowBe4’s security awareness training and simulated phishing platform allows ...