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

Cyberattacks are the biggest risk to the UK financial system – Bank of England research

Cyberattacks are the biggest risk to the UK financial system, according to new research from the Bank of England.

New Phishing Campaign Uses Office Docs to Install Cobalt Strike Beacon

Under the guise of determining applicant eligibility for a U.S. federal government job, this latest phishing attack plants the seed for a future attack on the victim organization.

Cyber-Zombie Apocalypse: Ransomware Gangs Continue to Come Back from the Dead

With ransomware gangs making so much money and then dropping off the face of the earth, what’s the motivation to come back to life and potentially risk getting caught?

German Hackers Arrested for Stealing €4 Million in 7-Month Banking Phishing Scams

The recent arrest demonstrates how very small and unsophisticated a cybercriminal team can be to launch a very successful phishing campaign that takes victims for millions.

Small Business Grants as Phishbait

INKY has published a report on the use of small business grants as phishing lures. Scammers are impersonating the US Small Business Administration (SBA) to distribute phony grant ...

A New Phishing-as-a-Service Kit

Researchers at Mandiant have published an analysis of a phishing-as-a-service kit called “Caffeine,” which further lowers the bar for inexperienced cybercriminals by offering a publicly ...

79 Million Malicious Domains Flagged in the First Half of 2022

Security researchers at Akamai identify an average of 13 million newly observed domains (NOD) each month this year, representing about 20% of the NODs resolved in the same timeframe.

Three-Quarters of Ethical Hackers Can Collect and (Potentially) Exfiltrate Data in 10 Hours or Less

New insight from the SANS Institute surveying 300 ethical hackers sheds some light on how they perceive your security stance – and how easy it is for them to break in despite your efforts.

Encrypted Files are the Overwhelming Way Organizations “Detect” Ransomware Attacks

New analysis of cyberattacks shows that organizations aren’t able to properly detect ransomware attacks, resulting in a majority of victims paying the ransom to retrieve data.