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

Iran-Aligned Threat Actor "CharmingCypress" Launches Spear Phishing Attacks

Researchers at Volexity warn that the suspected Iranian threat actor CharmingCypress (also known as “Charming Kitten” or “APT42”) has been launching spear phishing attacks against Middle ...

Over Half of Malware Downloads Originate from SaaS Apps

As the popularity of SaaS apps continues to grow, security analysts expect the misuse of such apps as the host for malware downloads to continue to rise through 2024.

Phishing Campaign Exploits Remote Desktop Software

A phishing campaign is attempting to trick users into downloading remote monitoring and management (RMM) software like AnyDesk, Atera, and Splashtop, according to researchers at ...

Number of Data Compromises Affecting U.S. Organizations Rises 77%

New data summarizing the compromises of data in 2023 provides key details on who’s being targeted, what types of data is being compromised, and what attack vectors are being used.

Another Ransomware-as-a-Service Known as “Wing” Takes Flight on the Dark Web

Analysis of this newly-spotted service makes it clear that the newest entrant into the Ransomware-as-a-Service (RaaS) space has taken note of where predecessors are lacking and launched a ...

Security Teams Spend 71 Hours Responding to Every One Hour in a Cyber Attack

New data sheds light on what kinds of cyber attacks are targeting your cybersecurity team, what it’s costing them, why it’s taking so much time to fix, and where you should focus ...

Americans Lose a Record $10 Billion to Fraud in 2023; Mostly Due To Investment Scams

The US Federal Trade Commission (FTC) has disclosed that people in the United States lost a record $10 billion to fraud in 2023, a 14% increase from 2022. Nearly half of the losses were ...

Browser-Based Phishing Attacks Increase 198%, With Evasive Attacks Increasing 206%

A new report shows massive increases in browser attacks in the second half of 2023, with over 31,000 threats specifically designed to bypass security solution detection.

Watch Out For Valentine’s Day Romance Scams

Users should be wary of online romance scams ahead of Valentine’s Day, according to Imogen Byers at ESET. While in the past these scams could often be thwarted by using reverse image ...