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

Hundreds of Fortune 500 companies have hired North Korean operatives.

Cyberwire wrote: "WIRED has published a report on North Korea's efforts to obtain remote IT positions at foreign companies, noting that these fraudulent workers are now using AI tools to ...

Cybercriminals Impersonate DHS Amid Deportation Efforts

Researchers at INKY warn that criminals are impersonating the US Department of Homeland Security to launch phishing scams.

Researchers Warn of Surge in Infostealers Delivered Via Phishing

The number of infostealers delivered via phishing emails increased by 84% last year, according to a new report from IBM’s X-Force researchers. Threat actors are using these malware ...

Criminals Exploit the Death of Pope Francis to Launch Scams

Scammers are exploiting the death of Pope Francis to launch social engineering attacks, according to researchers at Check Point.

Social Engineering Campaign Abuses Zoom to Install Malware

A social engineering campaign is abusing Zoom's remote control feature to take control of victims’ computers and install malware, according to researchers at security firm Trail of Bits.

Half of Organizations Lack Protection Against Email Spoofing

A new report from Valimail has found that 50% of organizations lack effective protection against email spoofing.

Warning: Ransomware Remains a Top Threat for SMBs

A new report from Sophos found that ransomware attacks accounted for over 90% of incident response cases involving medium-sized businesses in 2024, as well as 70% of cases involving small ...

Breaking the Stigma: 90% of Employees Agree that Phishing Simulations Improve their Security Awareness

According to our independent survey of individuals across the UK, USA, Netherlands, France, Denmark, Sweden, the DACH region, and Africa who use a laptop as part of their work, 90.1% find ...

Threat Actors Are Increasingly Abusing AI Tools to Help With Scams

Cybercriminals are increasingly using AI tools to assist in malicious activities, according to Microsoft’s latest Cyber Signals report.