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

Google App Scripts Become the Latest Way to Establish Credibility and Automate Phishing Attacks

Cybercriminals have found a new way of leveraging legitimate web services for malicious purposes, this time with the benefit of added automation of campaign actions.

Hurricane Deepfakes Flood Social Media

As the recent hurricane Helene caused major damage and as hurricane Milton has left a path of destruction across Florida, deepfakes are spreading misinformation on social media.

Attackers Abuse URL Rewriting to Evade Security Filters

Attackers continue to exploit URL rewriting to hide their phishing links from email security filters, according to researchers at Abnormal Security.

Free Phishing Platform Has Created More than 140,000 Spoofed Websites

A free phishing-as-a-service (PhaaS) platform named Sniper Dz has assisted in the creation of more than 140,000 phishing sites over the past year, according to researchers at Palo Alto ...

North Korea's Secret IT Army and How to Combat It

Organizations around the world are unknowingly recruiting and hiring fake employees and contractors from North Korea. These sophisticated operatives aim to earn high salaries while ...

Financial Services Industry Experiences a Massive Increase in Brand Abuse

Industry analysis of the domains used behind phishing and brand impersonation attacks show financial institutions are being leveraged at an alarming rate.

Infostealer Threat Group “Marko Polo” Evolving Into an “Empire”

New research by Recorded Future provides insight into how advanced and sophisticated the threat group Marko Polo has become since launching in 2022.

Cybercriminal Gang Targeting SMBs Using Business Email Compromise

Researchers at Todyl have published a report on a major cybercriminal group that’s conducting business email compromise (BEC) attacks against small and medium-sized businesses. Todyl ...

New VPN Credential Attack Goes to Great Lengths to Obtain Access

A new “so-phish-ticated” attack uses phone calls, social engineering, lookalike domains, and impersonated company VPN sites to gain initial access to a victim network.