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

Amazon-Related Scams Spike Ahead of Prime Day

Researchers at Check Point observed more than a thousand newly registered malicious or suspicious web domains related to Amazon last month. The criminals are likely gearing up to target ...

Phishing Attacks Target High Profile YouTube Accounts

Researchers at ESET warn of phishing attacks that are attempting to hack high-profile YouTube channels in order to spread scams or malware.

Travelers Beware: Booking.com Warns of Increases in AI-Enabled Travel Scams

In an interview at the Collision technology conference in Toronto, Booking.com’s CISO sounds the alarm on what she calls “supercharged artificial intelligence (AI) scams.”

State-Sponsored Phishing Campaigns Target 40,000 VIP Individuals

Researchers at Menlo Security discovered three state-sponsored phishing campaigns that have targeted 40,000 important individuals over the past three months. “In a recent 90-day period, ...

Phishing Attacks Themed Around Popular Weight Loss Drugs Increase 183%

As popularity grows for these proven methods of weight loss, scammers have taken note and have placed a significant focus on separating victims from their money.

New “Paste and Run” Phishing Technique Makes CTRL-V A Cyber Attack Accomplice

A new phishing campaign tries to trick email recipients into pasting and executing malicious commands on their system that installs DarkGate malware.

Ransomware Attack on U.K. Health Service Laboratory Disrupts Major London Hospital Services

What likely started as a quick ransomware “smash and grab” has turned into a headline case resulting in responses from both U.K. and U.S. law enforcement.

Hacked Customer Support Portal Being Used to Send Phishing Emails

A hacked customer support portal belonging to router manufacturer Mercku is being used to respond to customer queries with phishing emails, BleepingComputer reports.