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

2020 Cybersecurity Predictions by KnowBe4’s Experts

With data breaches hitting headlines daily, IT pros are constantly concerned about the next big threat. Whether it’s ransomware, phishing, or completely new attack vectors, there’s always ...

December 2019 Updates to our Data Protection Notices

In support of upcoming changes to data privacy laws we are making a few updates to our privacy policy. We have added language to help provide our customers clarity on KnowBe4’s ...

Major Dutch University Still Fighting Ransomware Downtime; Expert Says Russian Hacker Group Responsible

Major Dutch Maastricht University was still trying to recover from a crippling cyber attack nearly a week after the university's computer systems were infected by ransomware. New ...

Phishing in a Port

Among the ransomware that caused so much disruption in the latter half of 2019 was the strain known as Ryuk, and Ryuk has typically been spread by phishing. According to ZDNet, a recent ...

[LEGAL ALERT] What You May Have Overlooked in the Run Up to CCPA Compliance

LAW.COM had a very good reminder that you really need to keep in mind. Here is an extract: "With just days to go before the California Consumer Privacy Act (CCPA) compliance date, some ...

[Heads-up] Ransomware attack forces Arkansas CEO to fire 300 employees days before Christmas

The chief executive officer of a telemarketing company in Sherwood, Arkansas has let go 300 employees after the company failed to recover from a ransomware infection a few months back.

PayPal Scammers Want More than Just Your PayPal Credentials

Researchers at ESET have come across phishing sites that try to steal PayPal logins along with a wide range of personal and financial information. The scam begins with phishing emails ...

Veterans are High-Payoff Social Engineering Targets for Scammers

Veterans are particularly valuable targets for various types of social engineering attacks, according to Mary K. Talbot at the Providence Journal. Veterans are often respected leaders in ...

WIRED: "The Decade Big-Money Email Scams Took Over"

Excellent article in WIRED, where they observed that In the last few years, the "Nigerian prince" scams have gotten a major upgrade. Here is an extract and a link to the full article:

FBI Issues Alert For "Sleeper" LockerGoga and MegaCortex Ransomware

The FBI has issued a warning to private industry recipients to provide information and guidance on the LockerGoga and MegaCortex Ransomware.