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

FBI Warns of Phony Cryptocurrency Investment Apps

Cryptocurrency investors have lost nearly $43 million to fraudulent cryptocurrency investment apps, according to the US Federal Bureau of Investigation (FBI).

Cybersecurity Should be an Issue for Every Board of Directors

With so many Boards focused on operations, revenue, strategy, and execution, they completely are forgetting the simple fact that a single cyberattack can bring all that to a screeching ...

New Multi-Factor Authentication Prompt “Bombing” Attacks Give Access to Laptops, VPNs, and More

While multi-factor authentication (MFA) significantly reduces an organization’s threat surface by making the stealing of credentials much harder, a new attack takes advantage of phone ...

Copyright Claim Email is a LockBit Ransomware Phishing Attack in Disguise

The latest iteration in Copyright Claim scams is an evolution of this repeated attack method that has proven to get the attention – and response – of victims over the last few years.

Phishing Kit Imitates PayPal

Researchers at Akamai have discovered a PayPal phishing kit that attempts to steal victims’ identities as well as their financial information. The phishing page looks identical to ...

New Phishing Attacks Shame, Scare Victims into Surrendering Twitter, Discord Credentials

A new wave of social media phishing attacks are now using scare tactics to lure victims into sending their logins.

Ransomware Group Conti Reaches 40 Successful Attacks in a Single Month

In less than 2 years, the most successful ransomware group to date has reached new levels of campaign and individual attack effectiveness, targeting over 160 industries worldwide.

Phishing Attacks are the Most Prevalent Source of Identity-Related Breaches

Cybercriminals almost always need to leverage credentials as part of just about any kind of cyberattack. To no surprise, phishing and social engineering play a dominant role.

Facebook-Themed Scam Aims to Steal Your Credentials

A creative mix of phishing emails, solid social engineering, use of Facebook Messenger, brand and site impersonation, and a sense of urgency all add up to a believable attack.

Watchdog Uncovers 12% of Google Ads for Student Loan Relief Could be Malicious

You may want to be careful about clicking on a student loan forgiveness ad. The Tech Transparency Project reviewed the top Google searches with 'student loan forgiveness' and found almost ...