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

Phishing-as-a-Service Platforms LabHost and Frappo Help Threat Actors Target Canadian Banks

Analysis of attacks on banking institutions in Canada can be almost perfectly tied to the use and availability of phishing-as-a-service platforms, indicating increased use by threat ...

CISA: Healthcare Organizations Should Be Wary of Increased Ransomware Attacks by ALPHV Blackcat

A joint cybersecurity advisory published last week discusses ransomware attack impacts on healthcare, along with ALPHV’s attack techniques, indicators of compromise (IoCs) and proper ...

Sophos: Over 75% of Cyber Incidents Target Small Businesses

New analysis of incident data shows threat actors are evolving their attack techniques to take advantage of budget and resource-strapped small businesses.

Organizations Are Vulnerable to Image-based and QR Code Phishing

A majority of organizations have a false sense of security regarding their resistance to phishing attacks, according to a new report from researchers at IRONSCALES and Osterman Research.

Despite Feeling Prepared for Image-Based Attacks, Most Organizations Have Been Compromised by Them

With QR-code phishing attacks on the rise, new data sheds light on just how unprepared organizations actually are in stopping and detecting these device-shifting attacks.

New Research: BEC Attacks Rose 246% in 2023

Business email compromise (BEC) attacks surged by 246% last year, according to researchers at ReliaQuest.The researchers believe the increase is due to widely available phishing kits that ...

Compromised Credentials Postings on the Dark Web Increase 20% in Just One Year

Data trends show a clear upward momentum of posts from initial access brokers on the dark web, putting the spotlight on what may become cybersecurity’s greatest challenge.

AI-Driven Voice Cloning Tech Used in Vishing Campaigns

Scammers are using AI technology to assist in voice phishing (vishing) campaigns, the Better Business Bureau (BBB) warns. Generative AI tools can now be used to create convincing ...

I am announcing AIDA: Artificial Intelligence Defense Agents!

AI is evolving at breakneck speed. Elon Musk recently said: "I've never seen any technology advance faster than AI compute. We are on the edge of the biggest technology revolution ever. ...