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

Voicemail Phishing Scam Steals Credentials

A new phishing campaign is asking victims to click on a link in an email to download a voicemail, My Online Security reports. When recipients click on the link, they’ll be redirected to a ...

FBI’s Advice on Spotting Phishing

The FBI’s Internet Crime Complaint Center (IC3) released a PSA warning that attackers are exploiting people’s trust in sites that use HTTPS. Cybersecurity training has in the past rightly ...

Social Engineering is at the Root of Nearly all Fraud Attacks

According to the latest fraud report from RSA, all four of the documented fraud attack methods use some form of social engineering to trick victims into giving up their money.

Case Law Continues to Define the Extent to Which Cyber Insurance Must Cover Losses

Several new cases show the evolution of case law that demonstrates what both cyber insurers and policyholders alike can expect from the courts.

Europol Reminder on Ticket Fraud

Offers that sound too good to be true probably are. It’s an old saw, but one that’s worth revisiting. The too-good-to-be-true offers are most likely fraudulent, according to an alert ...

Tax Phishing in the UK

Her Majesty's Revenue and Customs (HMRC) has processed 2.6 million reports of attempted phishing attacks since 2016, Infosecurity Magazine reports. More than 1.9 million of these phishing ...

Meet The New InfoSec Unicorn: KnowBe4. Thank You For Your Trust!

We're super happy to announce this new milestone. KnowBe4 has reached unicorn status valuing the company at $1 billion with the new KKR $300 million investment. You can read the press ...

Extortion Threatens Reputational Damage

Scammers are sending emails threatening to damage the reputation of websites unless the sites’ owners hand over 0.3 bitcoin, or around $2,400, according to BleepingComputer.

The CIA will not Fix Your Online Rap Sheet

Scammers are still posing as CIA employees and telling victims that they’re about to be arrested for their involvement in an international pedophile ring, according to the Register. The ...