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 Attacks Rose by 220% At Pandemic Peak Amid Global COVID-Related Fears

At a time when the last thing we need is more phishing attacks, new data shows that cybercriminals have been stepping up their game, taking full advantage of the pandemic.

Google's Free Services and Phishing Campaigns: A Likely Pair

Cybercriminals are now launching phishing campaigns that abuse Google's free productivity tools while also using social engineering to trick you into installing malware.

Spotting Retail Scams During the Holiday Season

People need to be particularly vigilant for scams as we approach the holiday shopping season, according to Laura Brooks at Tessian. Scammers always take advantage of seasonal trends, and ...

[HEADS UP] Allowing Site Notifications Can be Very Costly

Krebs on Security reported that there have been an increasing number of websites asking visitors to approve 'notifications'. In most cases these notifications are not malicious, but ...

Nearly Half of Spear Phishing Emails Bypass Security Filters

47% of payloadless phishing emails are able to bypass the most popular secure email gateways (SEGs), according to researchers at IronScales. These are emails that don’t contain malicious ...

Why Use Malware When Cybercriminals Can Use Social Engineering?

Researchers at Malwarebytes warn that a malvertising campaign they call “malsmoke” has stopped deploying exploit kits and is now using social engineering attacks to trick users into ...

KnowBe4 is Named Cybersecurity Company of the Decade

We're pleased to announce that KnowBe4 has been named the Cybersecurity Company of the Decade (2010 - 2020) by Cybersecurity Ventures!

[HEADS UP] Ransomware Gangs Partner to Extort Victims

According to Bleeping Computer, several ransomware crews are teaming up to split profits obtained in malicious attacks targeting public and private companies.

Phishing in Facebook's Pond

A scam targeting Facebook users duped hundreds of thousands of people out of their money and information, according to researchers at vpnMentor. The researchers discovered an exposed ...

KnowBe4 Wins Tampa Bay Tech's 2020 Company of the Year Award

We have officially won the Tampa Bay Tech's 2020 Tech Company of the Year Award!