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

Credential Harvesting Attacks Targeting the U.S. Federal Government Nearly Double as Malware Declines

Shifts to a remote workforce in 2020 gave cybercriminals an opportunity to change tactics, focusing on credentialed access to systems accessed from outside government networks.

FINRA Warns of Phishing Attacks

The Financial Industry Regulatory Authority (FINRA) has warned of a phishing campaign that’s trying to trick users into responding to a phony regulatory non-compliance issue. The emails ...

See what happened when we "Zoom bombed" a customer with the cast of The Inside Man

Yes, this actually happened. The employees at Tennessee Aquarium were massive fans of The Inside Man, were not aware of this gag, and you can see their reactions when they see who the ...

[Heads Up] Has Your Exchange Been Hacked And Is Now A Ticking Time Bomb?

Brian Krebs wrote: "Globally, hundreds of thousand of organizations running Exchange email servers from Microsoft just got mass-hacked, including at least 30,000 victims in the United ...

Fake reCAPTCHA Found in Phishbait

Researchers at Zscaler warn of an ongoing phishing campaign targeting executives with fake voicemail notifications. More than half of the phishing emails have targeted organizations’ vice ...

Recognizing Elder Scams

People need to ensure that their elderly relatives are aware of scams that target older people, according to Emma McGowan at Avast. McGowan says it’s best to avoid being condescending, ...

The Different Scenarios How Backups are Vulnerable to Ransomware Attacks

Organizations need to ensure that their data backups aren’t tampered with by attackers, according to security firm Datto. In an article for Channel Futures, Datto explained that backups ...

WSJ: Russian Disinformation Campaign Aims to Undermine Confidence in Covid-19 Vaccines

The Wall Street Journal reports: " Russian intelligence agencies have mounted a campaign to undermine confidence in Pfizer Inc.’s and other Western vaccines, using online publications ...

[Heads Up] The Bad Guys Have Likely Hacked Your Exchange Email Server

What if Chinese state-sponsored hackers have owned your OWA using several brand-new zero-day vulns? Or Eastern Europe ransomware gangs? On March 2, Microsoft released emergency security ...