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

A New Attack Category is Born: You Now Need to Also Worry About Evasive Spear Phishing

Researchers have combed through 25 million emails and found a new method of attack that blends two previously seen attack types combined into a single attack.

MSPs Should Offer Security Awareness Training as Part of a Complete Security Service Offering

The opportunity to both better secure customers while generating recurring revenue through customer end-user education is ripe for the taking for MSPs focusing on security services.

China's Criminal Hacking Spree Created A Boeing Competitor

Crowdstrike just released an explosive report which details the lengths China went to narrow the gap of the technological delta between them and market leaders like Boeing and Airbus.

CRN: "Kevin Mandia -- Detect Spear Phishing, Lock Down CEO Email To Stay Safe"

Michael Novinson at CRN had a great article that really explains the issues we are dealing with. He started out with: "Spear phishing remains the most common way for adversaries to ...

Simjacking is Still a Problem, British Food Writer Lost £5,000

British food writer Jack Monroe lost £5,000 due to a simjacking attack, the BBC reports. In a series of tweets, Monroe said someone had taken over her phone number and used the access to ...

It’s Baaaaaaaack! Emotet Trojan Rears Its Ugly Head Once Again After a 3-Month Vacation

One of the most dangerous pieces of malware to-date, this trojan-turned-botnet has come back after a brief hiatus and appears to be a part of a new spear phishing campaign targeting ...

Cyber Risk Remains a Top Concern for Organizations While Lacking Confidence in Addressing Cyber Threats

It appears priority and ability to execute are two very different things when it comes to dealing with cyber threats, according to the latest data from Marsh and Microsoft.

Extremely Embarrassing 250,000-record Data Breach At Hookers.nl

The data of 250,000 users of Hookers.nl, a forum where experiences with prostitutes and escorts are exchanged, have been stolen and offered for sale on the internet. It concerns e-mail ...

Why Hack When You Can Con?