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

84% of Organizations Experienced Ransomware and Phishing-Related Security Events in the Last 12 Months

New research from Trend Micro and Osterman Research highlights where organizations are strongest and weakest at stopping phishing attacks resulting in ransomware.

CISA Publishes Darkside Malware Analysis Report and Updated Best Practice Guidance Against Ransomware

New details provide valuable insight into exactly how Darkside works to compromise and encrypt systems, with valuable guidance to avoid becoming a victim of ransomware.

Cryptocurrencies and Email Extortion Trends

Researchers at GreatHorn have found that 98.7% of extortion emails ask for payment in Bitcoin. Most of these emails aren’t targeted, but enough people will likely fall for them that the ...

Phishing Campaign Uses Novel Technique to Deliver Malware

Researchers at McAfee warn that a phishing campaign is delivering malware via Word documents that don’t contain any malicious code. When a user opens the document and enables content, the ...

New York Department of Financial Services Issues New Guidance to Financial Services Orgs to Counter Ransomware

NYDFS offers up sound best practices in addition to their recently released Cyber Insurance Risk Framework based on recent attack investigations, finding repeated use of “the same handful ...

Year-Long Phishing Campaign Targets Energy, Oil & Gas Companies Using Spoofed B2B Correspondence

Uncovered by the research team at cloud protection vendor Intezer, this new phishing campaign seeks to steal information and position each victim as the foothold to spear phish additional ...

Spear Phishing Campaign Targets Energy Companies

Researchers at Intezer have spotted a phishing campaign that’s targeting energy companies in South Korea, the United States, the United Arab Emirates, and Germany. Most of the targets are ...

Ransomware Attacks Put Singapore Organizations at Risk of Violation of the Personal Data Protection Act

A new court decision sets precedence for all Singapore organizations where ransomware attacks – even without data exfiltration – may be subject to financial noncompliance penalties.

Counterterrorism Strategies Could Be the Key to Stopping Ransomware

With ransomware players, sophistication, effectiveness, and cost all on the rise, it may be time for us to take a page from counterterrorism to make it more difficult for cybercriminal ...