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

Healthcare Data Breaches Involve Triple the Records in 2018

As the healthcare industry continues to be a target in cyberattacks focused on data breaches of patient health records, the latest data shows that cybercriminals are taking more than ever.

KnowBe4 Named One of the Best Cybersecurity Blogs in the UK

I’m proud to announce that KnowBe4’s blog has been selected by 4D Data Centres as one of the top cybersecurity blogs of the year. These awards acknowledge outstanding content within the ...

Identity Theft by Low-Interest Credit Card Offer

Scammers have stolen large amounts of personal and financial information from thousands of Canadians via fraudulent phone calls offering lower interest rates on credit cards, an ...

It's The Season for Tax Scams... Again

America's Internal Revenue Service is warning taxpayers about a surge in phishing emails, links, and phone calls during tax season, according to Toni Birdsong at McAfee. The scammers pose ...

Bogus Job Offers as Phishbait

A series of phishing campaigns are targeting companies in various industries with phony job offers using direct messages on LinkedIn, according to researchers at Proofpoint. The attacker ...

Going to RSA in San Francisco Next Week? Get your Free Book Signed by Kevin Mitnick at KnowBe4’s Booth# 4624 North

Check out all the activities KnowBe4 will be doing at RSA:

Kevin Mitnick Demos Outlook Exchange Exploit

In a webinar last week Kevin Mitnick, KnowBe4's Chief Hacking Officer, shared a shocking demonstration of a recent Outlook Exchange exploit in which delegated access is allowed from any ...

Cyber Espionage Warning: The Most Advanced Hacking Groups Are Getting More Ambitious

Once attackers might have needed the latest zero-days to gain access to corporate networks, but now it's spear-phishing emails using social engineering tactics that are most likely to ...

The NoRelationship Attack Bypasses Office 365 Email Attachment Security

Attackers are bypassing Office 365 email attachment security by editing the relationship files that are included with Office documents, according to Yoav Nathaniel at Avanan. A ...