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

[POLL] Sam Altman: "I don't do Google searches anymore." How about you?

I'm doing a quick poll because I find myself exactly where Sam is. But I would love to understand how that is for us IT pros here. Hence.. a POLL I am hosting at LinkedIn. Deadline is a ...

New Phishing Campaign Targets The X Accounts of Politicians, Tech Companies, Cryptocurrency, And More

SentinelOne warns that a phishing campaign is targeting high-profile X accounts, including those belonging to US political figures, leading journalists, major technology companies, ...

Facebook Business Users Beware: Thousands Hit by New Phishing Scam

Check Point warns that a large-scale phishing campaign is targeting Facebook accounts with phony copyright infringement notices.

2024 Was a Record-Breaking Year For Ransomware

2024 saw the highest-ever amount of ransomware attacks, according to a new report from NCC Group.

Don’t Fall Victim: DeepSeek-Themed Scams Are on the Rise

Scammers are taking advantage of the newfound popularity of the China-based AI app DeepSeek, according to researchers at ESET.

Warning: Organizations Need to Prep For AI-Powered Ransomware Attacks

The rise of agentic AI tools will transform the cybercrime landscape, according to a new report from Malwarebytes.

Phishing Up 76% – Deepfake Attacks Surge: Is Your Org the Next Target?

Nearly half (46%) of businesses observed an increase in deepfakes and generative AI-related fraud last year, a new report from AuthenticID has found.

Warning: Phishing Campaign Targets Germany with New Malware

Researchers at Cisco Talos warn that a new phishing campaign is targeting users in Germany and Poland in an attempt to deliver several strains of malware, including a new backdoor dubbed ...