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

KnowBe4 Celebrates Winning a Tech Cares Award From TrustRadius 2023

For the fourth consecutive year, we received a Tech Cares Award from TrustRadius! This fourth annual award celebrates companies that have gone above and beyond to provide strong Corporate ...

Gootloader Malware Uses Social Engineering to Target Law Firms (or their Clients)

Law firms are being targeted by a large number of social engineering attacks involving the Gootloader malware delivery tool, according to researchers at Trustwave.

AI's Role in the Next Financial Crisis: A Warning from SEC Chair Gary Gensler

TL;DR - The future of finance is intertwined with artificial intelligence (AI), and according to SEC Chair Gary Gensler, it's not all positive. In fact, Gensler warns in a 2020 paper ...

Number of Named Ransomware Victim Organizations Jumps 64% in One Quarter

The second quarter of this year has become the focus of some new firsts in ransomware attacks, according to new data from cybersecurity vendor Reliaquest.

Salesforce Becomes the Latest Platform to Unwittingly Aid Phishing Scammers

Cybercriminals used the legitimacy of Salesforce’s email gateway to bypass security scanners and target Meta customers in an effort to steal Facebook credentials.

Comcast: 9 out of 10 Attempts to Breach Customer Networks Start with a Phish

The latest data from Comcast Business’ analysis of over 23.5 billion cyber attacks on their business customers shows the importance and role of phishing in attacks.

AI's Role in Cybersecurity: Black Hat USA 2023 Reveals How Large Language Models Are Shaping the Future of Phishing Attacks and Defense

At Black Hat USA 2023, a session led by a team of security researchers, including Fredrik Heiding, Bruce Schneier, Arun Vishwanath, and Jeremy Bernstein, unveiled an intriguing ...

Black Hat: "Five cyber phases of Russia's hybrid war"

The Cyberwire reported: "Victor Zhora, deputy chairman and chief digital transformation officer at Ukraine's State Service of Special Communication and Information Protection (SSSCIP) ...

Record ¥3 bil stolen via phishing in Japan in 1st half of 2023

A record 2,322 scams in Japan to steal internet banking IDs and passwords have resulted in unauthorized money transfers totaling a record of around 3 billion yen ($21 million) in the ...