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 Site Takes Brand Impersonation to a Whole New Level Pretending to be FINRA

Most scammers simply grab a company logo, or perhaps a logon page to make it appear like the website used as part of a scam is legitimate. But how about an entire website?

[HEADS UP] Carnival Corp. is the Next Victim of a Ransomware Attack

Carnival Corporation said it detected a ransomware attack that accessed and encrypted a portion of one brand’s information technology systems over this past weekend, according to Cruise ...

Credential Stuffing Attacks Shut Down Canada's Revenues Service

The Canada Revenue Agency is investigating two online hacking incidents affecting the personal information of thousands of Canadians, according to CBC News.

U.K. Firms Have Dismissed Employees for Breaching Cybersecurity Policy Since COVID-19 Pandemic

Almost two-fifths of business decision-makers have fired employees because of a cybersecurity policy breach since the pandemic began, a survey has found.

ABC News Interviewed Me on South Carolina Man Finding Personal Information of WWE Star and Raiding Her Home

A man in South Carolina was just arrested after finding the personal information of WWE Star Sonya Deville, and ABC Action News Tampa Bay interviewed me about how we can prevent ...

The Celebrities Don't Know You, and You Don't Know Them

Over the past four months, the UK’s National Cyber Security Centre (NCSC) has shut down more than 300,000 URLs linking to investment schemes that fraudulently claim to be endorsed by ...

RedCurl APT Uses Spear Phishing to Conduct Corporate Espionage

A previously unobserved APT group called “RedCurl” has been launching cyber espionage campaigns against organizations around the world since at least 2018, according to researchers at ...

Trying for a win, win, win game. Listen to this 5-minute interview with me.

Cyberwire has a short-form podcast called Career Notes and interviewed me recently. They said: "Founder and CEO Stu Sjouwerman takes us on a journey of how his career developed from ...

YIKES: Fancy Bear Linux Rootkit

Heads-Up! The CyberWire staff wrote: "The US National Security Agency and Federal Bureau of Investigation yesterday issued a joint alert concerning a new malware toolset operated by ...