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

The Number of Data Compromises Jumps 50% in H1 2023, Outpacing Every Year on Record

New data from the Identity Theft Resource Center (ITRC) covering the first half of this year shows a significant rise in the number of successful cyber attacks focused on stealing ...

Kevin David Mitnick  (Aug 6, 1963 - July 16, 2023)

The only constant is change. That is true for physics, for organizations, and for us humans. People join and leave teams, and of course also join and leave life. But it's always a shock ...

Threat Actors Add ".Zip" Domains to Phishbait

Cybercriminals are exploiting the introduction of “.ZIP” as a new generic Top-Level Domain (gTLD) to launch phishing attacks, according to researchers at Fortinet.

[INFOGRAPHIC] KnowBe4’s Content Library by the Numbers

KnowBe4 offers the world’s largest library of always-fresh security awareness and compliance training content that includes assessments, interactive training modules, videos, games, ...

[HEADS UP] See WormGPT, the new "ethics-free" Cyber Crime attack tool

A new generative AI model called “WormGPT” is being offered on cybercrime forums, according to researchers at SlashNext. While other AI tools, such as ChatGPT, have safeguards in place ...

Ransomware Crypto Payments Are on the Rise While the Rest of Crypto Crime is on the Decline

New insight from blockchain analysis company, Chainalysis, shows that activity involving known ransomware crypto addresses has grown over the last 18 months, despite a downfall of other ...

Nearly One-Quarter of All Emails Are Considered to be Malicious

The quantity of emails involved in scams and cyber attacks continues to grow as credential theft and response-based phishing persist as top attack variants.

Banking Detail Malvertising Attack Disguises Itself as a Foolproof USPS Google Ad

A new scam aimed at stealing your credit card and banking information has reared its’ ugly head as a completely legitimate ad that is likely to be clicked based on the corresponding ...

[Discovered] An evil new AI disinformation attack called 'PoisonGPT'

PoisonGPT works completely normally, until you ask it who the first person to walk on the moon was.