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

Nigerian Threat Actors Solicit Victim Organization Employees to Deploy Demon Ransomware

The use of employees as insider accomplices potentially changes how social engineering is being used in exchange for a direct request for internal assistance.

Arrests in International Fraud Scheme Due to Social Engineering

Police in Romania, the Netherlands, and Ireland have arrested and charged twenty-three people accused of conducting sophisticated social engineering attacks. The organized crime group ...

Hospitals Continue to be Ransomware Targets as Half Experience Shutdowns in the Last 6 Months

With financial impacts as high as $46K per hour, shutting down some or all of operations due to a ransomware attack is not a decision taken lightly by hospitals, but may be the only ...

Microsoft Warns of New Phishing-Turned-Vishing-Turned-Phishing Attack Aimed at Installing Ransomware

In what appears to be a phishing attack that includes a mix of emails and phone calls, Microsoft reminds us to be wary of only opening emails and attachments from known contacts.

“Compromise” is the “C” in “MICE”

The FBI is warning Silicon Valley companies to be wary of insider threats, Protocol reports. FBI special agent Nick Shenkin told Protocol in an interview that authoritarian ...

CISA shares guidance on how to prevent ransomware data breaches

Bleepingcomputer reported: "The US Cybersecurity and Infrastructure Security Agency (CISA) has released guidance to help government and private sector organizations prevent data breaches ...

Phishing Attacks Have Increased by 22% This Year

The volume of phishing attacks has increased 22% this year compared to the first half of 2020, according to researchers at PhishLabs.

Defending Against Ransomware Attacks Should Start (and Can End) With Security Awareness Training

The world’s most dangerous, expensive, and impactful cyberattack can potentially be stopped with little more than a conscientious user who is paying attention.

Can the Microsoft 365 Platform Be Trusted to Stop Security Breaches?

Lax security policies, a lack of security measures and solutions in place, and an expectation that Microsoft will address any security issues is putting organizations at risk.