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

72 Percent Of Cyber Security Professionals Have Considered Quitting Over Lack Of Resources

Ian Barker at Betanews commented on something astounding.

[Heads-up] Scary Phishing Attack Uses Legal Threats From Law Firm

Brian Krebs just posted the following alert: "Some of the most convincing email phishing and malware attacks come disguised as nastygrams from a law firm. Such scams typically notify the ...

Employees Don’t Take USB Security Seriously, Putting Organizations at Risk

USB devices continue to be a necessity for employees, an entry point for attackers, and an insecure medium to connect the two, spelling trouble for organizations.

U.S. Department of Homeland Security Issues List of Office 365 Security Vulnerabilities and Best Practices

The latest Analysis Report covers both areas of concern around Office 365 configurations that impact security, and offers up some simple recommendations to shore up vulnerabilities.

Q1 2019 Top-Clicked Phishing Email Subjects from KnowBe4 [INFOGRAPHIC]

Every quarter, KnowBe4 reports on the top-clicked phishing emails by subject lines in three categories: Social, General, and 'In the Wild'. The latter category results come from the ...

Financial Firms Spend $2,300 Per Employee Attempting to Address Cyber Security Concerns

A new joint study by Deloitte and the Financial Services Information Sharing and Analysis Center highlights the budget impacts establishing and maintaining cybersecurity.

Volunteer Cyber Crime Fighters Band Together in New York

Kim Nash reported in the WSJ Pro CyberSecurity newsletter—which I warmly recommend, it is an excellent daily news update—that "more than 100 applicants seek to volunteer their ...

[On-Demand Webinar] Empowering Your Human Firewall: The Art & Science of Secure Behavior

You know that "security awareness" is key to a comprehensive security strategy. But just because someone is aware doesn't mean they care. So how can you design programs that work with, ...

“Hack for Hire” Groups Offer Single Account Break-In Services For Just $750

Along with everything else malicious that’s available “as-a-Service”, the latest addition takes the burden of trying to initially hack an organization off of the plate of would-be ...

Global GozNym Takedown Shows The Anatomy Of A Modern Cybercrime Supply Chain

By Javvad Malik, our new Security Awareness Advocate for EMEA. A multi-national collaborative law enforcement effort has arrested individuals allegedly behind Nymaim and Gozi, also known ...

[PODCAST] Hacking Humans Live At KB4CON 2019

Last week, we had the pleasure of hosting the first ever live episode of the Hacking Humans podcast at KB4-CON in Orlando, where Kevin Mitnick and I teamed up with Dave Bittner and Joe ...

Account Takeover Attacks Increase as Cybercriminals Fine-Tune Their Brand Impersonation, Social Engineering, and Phishing Skills

The latest Spear Phishing Report from Barracuda highlights how cybercriminals are systematically improving their game… and are becoming more successful for it. The capturing of user ...

6 Signs You’ve Successfully Created a Security Culture

Security culture is much more than just IT policies and processes; it requires buy-in and participation from every user. Learn 6 ways to tell if you’re on the right path to building a ...

What's Wrong With The New Bill That Proposes Cyber Security Training for U.S. House Members?

A bill introduced last week requires all members, officers and employees of the U.S. House of Representatives to undergo cybersecurity training.

InfraGard Recommends User Education

Education is crucial in defending against evolving social engineering attacks, according to Jack Plaxe, president of the Kentucky InfraGard Alliance. During a presentation last week, ...

Phishing Attacks Top Verizon’s List of Threat Actions Used in Data Breaches

Verizon’s latest Data Breach Investigations Report provides valuable insight into exactly how attacks are carried out, what tactics are working, and how users are helping.

[Heads-Up] If This Is True It's A Disaster. Three Major US Antivirus Companies Breached? ***UPDATED

ARSTECHNICA is getting me worried here. We were all at KB4-CON in Orlando the last few days, and during the conference word got to me that security researchers found out that high-profile ...

[Spoiler!] That Free Avengers: Endgame Download You Found Online? It’s a Scam!

The lure of watching the latest Avengers movie is enough motivation for some to fall for this scam aimed at collecting your credit card data.

Half of SMBs Will Pay the Ransom in a Ransomware Attack

Despite the ability to properly protect against ransomware attacks, the latest data from AppRiver shows SMBs simply aren’t prepared to respond, and will, instead, pay up.