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

Phishing Scammers Benefit from Shady SEO Practices to Rank Better Than Legitimate Domains

So-called “Black Hat SEO” services have popped up on Dark Web forums bringing advantageous search results to anyone willing to pay a small monthly fee.

New IRS Phishing Scam Uses Fake Notices to Steal Microsoft 365 Credentials

Scammers use an “overdue tax bill” along with a sophisticated and obfuscated javascript-based “invoice” attachment to identify targeted victims, validate credentials, and transmit them ...

FBI Director Warns of “Unprecedented” Cyberespionage Attacks Originating in China

FBI Director Christopher Wray highlighted China’s role in cyberespionage in a recent 60-Minutes news segment, saying the level of attacks the U.S. is seeing is “unprecedented in history.”

New Phishing Attack Uses Malicious Chatbot For Real Time Social Engineering

Researchers at Trustwave have observed a phishing campaign that uses a chatbot to add legitimacy to the scam. The chatbot is on a harmless website, and is designed to convince the user to ...

Phishing Attacks Increase by 54% as Initial Attack Vector for Access and Extortion Attacks

New analysis of threat activity for the first quarter of this year shows anyone with access to corporate email is a now on the front lines of modern cyberattacks of all kinds.

It's More Than Phishing; How to Supercharge Your Security Awareness Training

Tell people not to click a link, pat each other on the back, and ride off into the sunset. If only security awareness training was that simple in Europe.

Phishing Campaign Impersonates Shipping Giant Maersk

Researchers at Vade Secure warn of a large phishing campaign that's impersonating shipping giant Maersk to target thousands of users in New Zealand.

WSJ: "Cyber Insurance Went Up A Whopping 92% In 2021"

Whoa Nellie, that's getting to be real money here. This is the kind of thing that starts cutting into your whole IT budget.

Spear Phishing a Diplomat

Researchers at Fortinet observed a spear phishing attack that targeted a Jordanian diplomat late last month. The researchers attribute this attack to the Iranian state-sponsored threat ...