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

[Eye Opener] The Biggest Bitcoin Heist Ever: A Whopping 3.6 Billion Dollars!

I'm not sure why this is not all over the press. Bloomberg picked up on this though. A pair of South African brothers have vanished, along with Bitcoin worth $3.6 billion from their ...

New Phishing Attack Adds a Call Center Step to Get You to Download Malware

Unlike traditional phishing emails that simply attach or link to a malicious file, a new scam from cybercriminal group BazaCall makes victims call in and be instructed to download the ...

Cybersecurity and Business Priorities Don’t Appear to Be Aligning – and That’s Bad for Your Security Stance

Despite organizational leadership believing cyber security initiatives can support business goals, the way businesses approach cybersecurity seems to prove otherwise.

An Unusual Attachment is Most Likely a Phishing Campaign

A phishing campaign is using Windows Imaging Format (WIM) files to deliver malware, according to researchers at Trustwave. WIM files aren’t commonly thought of as potentially malicious, ...

Misconfigured Cloud Database Increases Risk of Social Engineering

DreamHost, a major website hosting provider, exposed 814 million user account records in an unsecured database, researchers at Website Planet have found. The data exposed included a ...

[HEADS UP] Over 400% Increase in Ransomware Victims

According to a recent report by OODA Loop, "Mandiant claims to have detected a 422% increase in victim organizations announced by ransomware groups via their leak sites year-on-year ...

Threat Actors use Google Ads to Target People Migrating to Encrypted Messaging Services like Signal and Telegram

Researchers at eSentire warn that threat actors have been using Google Ads to target people migrating from WhatsApp to other encrypted messaging services, particularly Signal and Telegram.

Attackers Abuse Google Docs for Phishing Attacks

Attackers are using a new technique to exploit Google Docs for phishing attacks, according to researchers at Avanan. The attackers take advantage of the fact that Google Docs ...

ADATA Ransomware Attack Results in the Publishing of 700GB of Data Stolen

The headline alone sounds the warning that ransomware gangs aren’t just threatening to release exfiltrated data; they’re full out retaliating when they don’t get their ransoms paid.