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 Rise in Unwanted Emails, Now Found to be Nearly 41%

How many business emails do the recipients actually want? Or, conversely, how many of them are unwanted? A study by Hornetsecurity looked at this question (along with a number of other ...

[HEADS UP] FBI Warns of Tech Support Scams That Impersonate Payment Portals for Fake Refunds

In the latest FBI warning, cybercriminals are now impersonating financial institutions' refund payment portals. This effort is to contain victims' personal information with legitimacy.

Phishing Campaign Abuses Microsoft Customer Voice

Researchers at Avanan warn that a phishing campaign is using Microsoft’s Dynamic 365 Customer Voice feature to send malicious links. Customer Voice is designed to collect feedback from ...

Three-Quarters of Employees Feel It’s the Company’s Job to Ensure Security, Despite Three-Quarters Also Personally Experiencing a Cyberattack

Even with employees seeing cyberattacks first-hand and understanding the seriousness of such attacks, organizations have a culture problem where users just don’t care.

Ransomware Attacks Targeting Manufacturing are up 52% Over the Course of 12 Months

While every sector is taking strides to improve their security stances against ransomware and other cyberattacks, the latest data shows that for Manufacturing the impacts are huge and the ...

Cyberattacks Globally Increased by 28% in the Third Quarter of 2022 as the Average Org Experiences Over 1,100 Attacks Weekly

Check Point Research provides highlights that color the third quarter of 2022, painting a picture of increases in attack frequency and intensity in every single sector.

Cookie-stealing Feature Added by Phishing-as-a-Service Provider To Bypass MFA

The Robin Banks phishing-as-a-service platform now has a feature to bypass multi-factor authentication by stealing login session cookies, according to researchers at IronNet. The phishing ...

[EYES OUT] This Scary Strain of Sleeper Ransomware Is Really a Data Wiper in Disguise

This Data wiper replaces every other 666 bytes of data with junk. Techradar reported that a new data-wiping malware has been detected, infecting more and more endpoints with each passing ...

New Business Email Compromise Gang Impersonates Lawyers

A criminal gang is launching business email compromise (BEC) attacks by posing as “real attorneys, law firms, and debt recovery services.” The attackers send legitimate-looking invoices ...

[HEADS UP] Australia Continues to be Vulnerable to Cybercrimes as Half a Billion Has Been Lost to Scammers

Australia is the new hot spot for cyber attacks. The Australian Cyber Security Centre (ACSC) recently reported that Australia has been targeted by cybercriminals every 7 minutes, and the ...