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

Wordfence Becomes the Latest Brand to be Impersonated Putting 800 Million Sites at Risk

With its wide use and trusted state among Wordpress developers and website admins, a new campaign impersonating the website security brand could put hundreds of millions of websites at ...

New PCI Password Requirements Could Be the Impetus for Credential Harvesting Scams

As the retirement countdown for the current version of PCI is now less than six months, a new standard for password length, complexity, and change frequency may create some risk.

Scammers Exploit Twitter’s Transition to “X”

Scammers are taking advantage of Twitter’s rebranding to “X,” according to Stephanie Adlam at Gridinsoft. A phishing campaign is targeting Twitter Blue users by telling them they need to ...

KnowBe4’s Interactive Phishing Analysis Center: Keep Your Finger On The Pulse

As a security awareness practitioner, keeping your pulse on industry - and geographical - benchmarking data and best practices is always a good way to measure your organization’s security ...

Most Organizations Using Weak Multifactor Authentication

Most organizations are still using weak forms of multi-factor authentication (MFA), a survey by Nok Nok has found. These forms of MFA can be bypassed if an employee falls for a social ...

[INFOGRAPHIC] Q2 2023 Top-Clicked Phishing Test Results Favor HR-Related Subjects

KnowBe4's latest reports on top-clicked phishing email subjects have been released for Q2 2023. We analyze 'in the wild' attacks reported via our Phish Alert Button, top subjects globally ...

GitHub Warns of Social Engineering Campaign Targeting Employees in the Technology Industry

A few weeks ago, GitHub posted on their blog a recent security alert that should have any organization in the tech industry worried.

Fraud Masquerades as Anti-Fraud

Many of us have received a phone call or other notification from a credit card company telling us that they’ve detected suspicious activity on our card. Was it us? Did we just spend $500 ...

Data Theft Extortion Attacks Rise 25 Percent in Just One Quarter and Take Top Attack Spot

A recap of Q2 from Cisco Talos’ incident response services provides insight into exactly what kinds of attacks are being seen in the field, and what kinds of attacks you need to be ...