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

Chinese Threat Actor Targets OpenAI With Spear-Phishing Attacks

OpenAI has disclosed that its employees were targeted by spear-phishing attacks launched by a suspected Chinese state-sponsored threat actor.

The Number of Malicious Emails Reaching Inboxes Is Declining

New research shows that less malicious emails are getting past security scanners to the inbox, but also provides details about how phishing emails are becoming increasingly dangerous.

North Korean Hackers Continue to Target Job Seekers

A North Korean threat actor is launching social engineering attacks against job seekers in the tech industry, according to researchers at Palo Alto Networks’ Unit 42.

KnowBe4 Named a Leader in the Fall 2024 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) Software

We are excited to announce that KnowBe4 has been named a leader in the Fall 2024 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) for the PhishER platform for ...

KnowBe4 Named a Leader in the Fall 2024 G2 Grid Report for Security Awareness Training

We are thrilled to announce that KnowBe4 has been named a leader in the latest G2 Grid Report that compares security awareness training (SAT) vendors based on user reviews, customer ...

44% of U.S. Organizations Experienced One or More Ransomware Attacks in the Last Year

As ransomware becomes more pervasive, new data provides insight into how well organizations are responding and the attack vector being used most.

"Operation Kaerb" Takes Down Sophisticated Phishing-as-a-Service Platform “iServer”

A partnering of European and Latin American law enforcement agencies took down the group behind the mobile phone credential theft of 483,000 victims.

Sextortion Scammers Attempt to Hit “Close to Home”

We live in a world where, despite the sharing of information online, we feel like those interactions will never reach home. But a new scam – covered on WTSP Tampa Bay’s Channel 10 news – ...

Trinity Ransomware Targets the Healthcare Sector

The Trinity ransomware gang is launching double-extortion attacks against organizations in the healthcare sector, according to an advisory from the US Department of Health and Human ...