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

Phishing Attacks Use Victim Interest in Oscar-Nominated Movies to Steal Credit Cards, Install Malware

People wanting to watch high-profile movies are the latest target in scams that trick users into offering up credit card details for a chance to download films not yet available for ...

[Heads-up] New Ransomware Strain Hijacks A Vulnerable Windows Driver To Turn Off Your Antivirus And Infect The Network

Security company Sophos warns of a new ransomware strain that uses a vulnerable driver in an attempt to break into a Windows system and then disable the running security software.

Trenton School Treasurer Spots a 'Phishing Expedition'

Someone went on a ‘phishing expedition’ trying to trick a Trenton School Board of Education member into transferring thousands of dollars into their account, but a Trenton School ...

Another SMS Scam

A new PayPal SMS phishing campaign is making the rounds, according to Paul Ducklin at Naked Security. The text messages in this campaign purport to come from PayPal and inform recipients ...

SEC Releases Results of Cybersecurity and Resiliency Practices Examinations

The SEC’s Office of Compliance Inspections and Examinations (OCIE) published a new report on the findings from examining the methods used by market participant organizations.

Ransomware Attack Leaves Logistics Company with Disabled Systems, Manual Processes, and Customer Delays

The devastation after a ransomware attack on global logistics company Toll Group demonstrates the impact a simple ransomware attack can have on operations.

Email Test Finds More Than 50% of Kingston School District Employees Vulnerable to Phishing

More than half of the people who have Kingston school district email accounts opened a potentially damaging phishing email sent to them by a firm that's helping the district gauge ...

January Content Update: Including the new 2020 KnowBe4 Social Engineering Red Flags Training Module

Here are a few important updates to share with you from the month of January.

Anatomy of a Rental Phishing Scam

There was an unsuccessful phishing attempt that security professional Jeffrey Ladish almost fell for. Jeffrey was house searching and was looking on Craigslist and Zillow for rental ...

Charities Need to Watch Out for Scammers

The UK’s National Council for Voluntary Organisations (NCVO) has warned charities to be wary of scammers, Charity Digital News reports. The NCVO’s Road Ahead 2020 report outlines trends ...