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

TraderTraitor: When States do Social Engineering

North Korea’s Lazarus Group is using social engineering attacks to target users of cryptocurrency, according to a joint advisory from the US FBI, the Cybersecurity and Infrastructure ...

Ransomware Attacks Show Temporary Slowing but are Expected to Increase in 2022 [Graphs]

New data from Recorded Future shows how the war in Ukraine is causing a brief slowdown of ransomware attacks on healthcare, governments and schools that is predicted to return to growing ...

Only Half of All Organizations Have Refreshed Their Security Strategy Based on the Pandemic

A new study published by Ponemon Institute shows that a material portion of organizations are still using pre-pandemic security processes and policies, putting the org at risk.

FBI Warns of Bank Fraud Smishing Campaign

The FBI has warned of a smishing campaign that’s targeting people in the US with phony bank fraud notifications. The text messages inform users that someone has attempted to initiate a ...

Social Engineering Campaign against African Banks

A phishing campaign is targeting African banks with a technique called “HTML smuggling” to bypass security filters, according to threat researchers at HP.

“Being Annoying” as a Social Engineering Approach

Attackers are spamming multifactor authentication (MFA) prompts in an attempt to irritate users into approving the login, Ars Technica reports. Both criminal and nation-state actors are ...

Q1 2022 Report: Holiday-Themed Phishing Emails Entice Employees to Click [INFOGRAPHIC]

KnowBe4's latest quarterly report on top-clicked phishing email subjects is here. We analyze the top categories, general subjects (in both the United States and globally), and 'in the ...

Small and Medium Businesses Account for Nearly Half of all Ransomware Victim Organizations

As ransomware costs increase, along with the effectiveness and use of extortions, smaller businesses are paying the price, according to new data from Webroot.

One in Three U.K. Businesses Experience Cyber Attacks Weekly

New data from the U.K. Government’s Cyber Security Breaches Survey 2022 report shows that a material portion of businesses and charities are being attacked and feeling the repercussions.