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

[HEADS UP] Office 365 Phishing Attacks Now Use Fake Zoom Suspension Alerts

Microsoft Office 365 users are targeted by a new phishing campaign using fake Zoom notifications to warn those who work in corporate environments that their Zoom accounts have been ...

Back-to-School: a Buzzkill in More Ways than One

40% of the top twenty universities in the US aren’t using DMARC to mitigate phishing attacks that impersonate the universities’ domains, according to researchers at Tessian. Additionally, ...

[On-Demand Webinar] Hackers Exposed: Kevin Mitnick Shares His Tradecraft and Tools to Help You Hack Proof Your Network

Months of quarantine, transitioning to work from home, economic uncertainty, social and political turmoil… it’s easy to see why your employees are amped up, tense and distracted. And the ...

More Than 15 Billion Credentials Are For Sale in Criminal Markets

Researchers at Digital Shadows warn that there are more than 15 billion leaked login credentials for sale in online criminal marketplaces. This number is up 300% since 2018, and the ...

How To Get And Stay Compliant With The New California Consumer Privacy Act (CCPA):

California's new AB 375 privacy law is not as bad as GDPR, but the details are still in flux. CCPA does not have some of GDPR's most scary requirements like the very short 72-hour window ...

Gartner: You Should Focus On These 7 Specific COVID-19 IT Security Areas

Gartner observed: "Rapid responses to the coronavirus pandemic leave organizations vulnerable to security breaches. Security and risk teams must remain vigilant and focus on strategic ...

Microsoft Seizes Six Domains Used in Sophisticated Phishing Scheme

Microsoft announced that the US District Court for the Eastern District of Virginia has ruled that the company can seize six domains that were being used in a widespread phishing ...

[Heads Up] The First-Ever Russian BEC Gang, Cosmic Lynx, Was Uncovered. They Spear Phish Multinational & Fortune 500 Senior Executives

“This is a historic shift to the global email threat landscape and portends new and sophisticated social engineering attacks that CISOs around the world must brace for now,” according to ...

FakeSpy Android Malware Distributed via Smishing

Researchers at Cybereason are tracking a sophisticated malware campaign targeting Android devices around the world. The campaign involves a new version of the FakeSpy information-stealing ...

New Calendar Invitations as Phishbait Attack Wave

BleepingComputer warns that cybercriminals are using calendar invites to send phishing links to Wells Fargo customers. Researchers at Abnormal Security discovered this phishing campaign ...