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

Ransomware Gang Creates “User-Friendly” Stolen Data Search Site for Employee Victims

In an interesting extortion twist to get ransomware victims to pay up, one gang has created a search site to allow employees to see if their own private information has been made public.

Phishing Emails Top the List as the Initial Attack Vector for Ransomware Attacks

The latest data on ransomware trends from backup vendor Veeam demonstrate the impact these attacks have on backups and an organization’s ability to recover.

Email-Based Threats Double as Malware, Credential Phishing, and BEC Detections Increase

Newly released data from TrendMicro about high-risk email threats in 2021 shows where cybercriminals are placing their focus and where yours should be as well.

[FREE Resource Kit] July Is Ransomware Awareness Month

July is Ransomware Awareness Month, and we’ve got you covered with free resources!

New Phishing Campaign Impersonates Canada Revenue Agency

A phishing campaign is impersonating the Canada Revenue Agency (CRA) in an attempt to steal Canadians’ personal information, according to Rene Holt at ESET. The phishing emails inform ...

[New FBI and CISA Alert] This ransomware strain uses RDP flaws to hack into your network

As of May 2022, MedusaLocker has been observed predominantly exploiting vulnerable Remote Desktop Protocol (RDP) configurations to access victims' networks, according to a new joint ...

[Heads Up] Online Fraud Now Sky-high With 'Tinder Swindler' Romance Scams Costing Hundreds of Millions

A new article in Bloomberg focused on new sky-high online fraud numbers, they are horrendous. Here is a short summary and I recommend you read the whole article.

Wars and Lechery, Nothing Else Holds Fashion for Phishing Attacks

Shakespeare said it first, and things haven’t changed: suffering and desire continue to drive victims to the social engineers. Researchers at Bitdefender have observed a phishing campaign ...

Bad News to Ransom Payers: 80% of You Will Face a Second Attack Within 30 Days

New insight into what happens during and after a ransomware attack paints a rather dismal picture of what to expect from attackers, your executives, and your operations.

80% of Organizations Await “Inevitable” Negative Consequences From Email-Born Cyberattacks

With nearly every organization experiencing some form of phishing attack, new data suggests these attacks are improving in sophistication, effectiveness, and impact.