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

Scott County Schools victim of $3.7 million CEO Fraud Phishing Scam

GEORGETOWN, Ky. (WKYT) - Scott County Schools has announced the district is a victim of a multi-million dollar online CEO fraud scam.

[BREAKING NEWS] US Supreme Court Curbs Class Action Lawsuits Caused By W-2 Phishing Fraud

BREAKING NEWS: The upshot: This case made it all the way to the Supreme Court and sets a new precedent. A phished employee sent out 1,300 confidential employee W-2 data.

[Heads up] Sneaky Phishing Attacks Exploit Legitimate Services & Platforms to Fly Below Your AV's Radar

By Eric Howes, KnowBe4 Principal Lab Researcher. Over the last few months, we have seen a rising trend of the bad guys using legitimate services—mainly file hosting platforms, but also ...

Phishing Emails Will Always Get Through

Attackers have proven their ability to adapt to improved security measures, and organizations should never assume they’re safe from phishing emails, says Paul Gillin at SiliconANGLE.

Executives are Out and Employees are In as Cybercriminals Change Their Primary Targets for Cyberattack

Phishing and Social Engineering scammers are shifting tactics, focusing efforts on low-level employees using a variety of methods as a means to cast a wider net within a targeted ...

Phishing Attacks See Massive Increases and Improvements in Execution with Social Engineering at the Helm

With 98% of malicious emails that hit inboxes containing no malware, the evolution and future of the phish lies squarely in the hands of effective social engineering.

Manufacturing giant Aebi Schmidt hit by ransomware

Aebi Schmidt, a European manufacturing giant with operations in the U.S., has been hit by a ransomware attack, TechCrunch has learned.

PayPal receives patent for ransomware detection technology

The United States Patent and Trademark Office has granted this week a patent to online payments company PayPal for a technique for detecting and stopping ransomware attacks.

Evil TeamViewer Attacks Under the Guise of the U.S. State Department

A targeted, email-borne attack against embassy officials and government finance authorities globally is making use of a malicious attachment disguised as a top-secret U.S. document. It ...