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

The State of Organizational Cyber Defenses Impacts Cyber Insurance Availability, Cost, and Terms

A new report highlights the direct connection between how strong your organization’s security stance is and how easy it is to obtain cyber insurance.

FTC Warns of MetaMask and PayPal Phishing Campaigns

The US Federal Trade Commission has issued an alert warning of phishing campaigns that are impersonating PayPal and the MetaMask cryptowallet.

78% of Ransomware Victim Organizations Encounter Additional Threats-Turned-Extortions

New data sheds light on how likely your organization will succumb to a ransomware attack, whether you can recover your data, and what’s inhibiting a proper security posture.

Ransomware Gangs are “Big Game Hunting” as Victim Org Sizes and Ransom Payments Continue to Rise

Midsize and enterprise organizations take notice: the average and median amount of a ransom payment and the median size of the victim organization are on the rise.

Spain’s National Police Take Down a Phishing Gang

A phishing (by email) and smishing (by SMS text) operation in Madrid, Seville and Guadalajara has been taken down by the National Police of Spain. Over 40 arrests have been made on ...

Munich Re: "3x growth estimated in cyber crime costs over the next 4 years"

As cyber attacks continue to grow in sophistication and frequency, cyber insurers are expecting their market to double in the next two years.

U.K. Advance Fee Scams Increase by Over 600% in Less Than Two Years

New data from the U.K.’s Office of National Statistics shows that this often overlooked scam has grown significantly in interest – likely because it pays off.

Number of Ransomware Victim Organizations Nearly Doubles in March

New data shows a resurgence in successful ransomware attacks with organizations in specific industries, countries and revenue bands being the target.

King Charles Coronation Results in a Surge in Themed Scam Sites

The once-in-a-lifetime royal occurrence sparked countless websites designed to steal personal information and credit card details, causing security experts to issue warnings.

Business Email Compromise and “Confidential” Mergers and Acquisitions

A newly identified criminal organization has been observed running a large number of business email compromise (BEC) scams. Since February 2021, Abnormal Security reports the gang has ...