Human Risk Management Blog

Keeping you informed. Keeping you aware.
Stay on top of the latest in security including social 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

Reported Phishes of the Week

KnowBe4's Templates Mistress Katie has been busy again adding a new batch of phishing templates to the collection of "System Templates" available to active subscribers.

A new "long con" Scam Of The Week: Binary Options

Most scams on the internet are "short con" scams, compare them to hit & run. However, "long con" scams have started to show up that can take a few months to finally steal the money. ...

Investment fund loses $6 million in CEO Fraud and shuts down

CNBC reported some pretty stunning breaking news. I cannot come up with a better case for new-school security awareness training for employees in accounting and HR. A lawsuit filed on ...

CyberheistNews Vol 6 #38 [ALERT] FBI Warns Ransomware Attacks Are Getting More Dangerous And Expensive

*|CyberHeistNews|* CyberheistNews Vol 6 #38 [ALERT] The FBI Warns That Ransomware Attacks Are Getting More Dangerous And Expensive In an alert published this week, the U.S. Federal Bureau ...

McAfee: Ransomware Has Grown 128 Percent Over 2015

Intel Security's McAfee Labs Threat Report for September 2016 provides insight into the latest security statistics and trends, ranging from botnets to ransomware to malware "zoos." Large ...

Meet Mamba: New Full Disk Encryption Ransomware

SecurityAffairs just published a new discovery that you need to know about. A Brazilian Infosec research group, Morphus Labs, just discovered a new Full Disk Encryption (FDE) ransomware ...

[ALERT] FBI Warns Ransomware Attacks Get More Targeted And Expensive

In an alert published today, the U.S. Federal Bureau of Investigation (FBI) warned that recent ransomware variants have targeted and compromised vulnerable business servers (rather than ...

New Vicious And Highly Targeted Ransomware Attacks Made Public

Here’s an example of a highly targeted ransomware attack, with bad guys using a phony Bank of Montreal (BMO) template to social engineer possible victims into clicking on a malicious ...

A Single Ransomware Gang Made $121M In 2016

Intel Security today released its McAfee Labs Threats Report: September 2016, which assesses the growing ransomware threat; surveys the “who and how” of data loss; explains the practical ...

Targeted Lawsuit Phishing Attack With Sophisticated Payload

We are seeing a big phishing wave with a social engineering attack that threatens with a personalized lawsuit using the domain name of the targeted victim. This is an interesting payload ...

Adding Insult To Injury: The Ginsu Knives Approach To Ransomware

Kaspersky has a fascinating blog post on a new strain of ransomware called RAA that is not only fairly sophisticated, but incredibly abusive:

Seagate Sued By Own Employees For CEO Fraud Attack

Hard drive manufacturer Seagate was sued by its own employees as the result of a successful CEO fraud attack where all the personal information of 10,000 existing and former employees ...

Philadelphia Ransomware Strain Offers "Mercy" Button

Larry Abrams at Bleepingcomputer reported on a new strain that raises some eyebrows. "A new version of the Stampado ransomware called Philadelphia has started being sold for $400 USD by a ...

Scam Of The Week: A New Type Of Tech Support Fraud

We spotted an unusual phishing email which revealed a new scam your users will soon find in their inbox. Time to inoculate them before it becomes a problem! Many online service providers ...

Having some Phun With Phishers - CEO Fraud Blow-By-Blow

For the last 9 years I have been a board member of the public/private Clearwater Downtown Partnership. And as many public organizations, all the board member information is freely ...

"But, But, But... I Didn't Click!" False Positives In Phishing Tests

The following question was posted in the SANS Securing The Human forum. I thought it was a very good point and asked our VP Product Greg Kras for his perspective. First the question:

Funny Phishing Story: Your Online Order Receipt

A customer sent us this: Hi, I wanted to share with you a funny story…. My boss calls me into her office, very serious like. She sits me down and asks “Did you use the company credit card ...

KnowBe4 Is Hiring: QA Engineer and Sr Ruby Developer

Hi All, KnowBe4 is looking for a few good people. Specifically we are hiring a QA Engineer and a Senior Ruby Developer. Know anyone? Send them to our Jobs page on the website. KnowBe4 is ...

Coming Soon to an Inbox Near You: A New Type Of Tech Support Scam

By Eric Howes, KnowBe4 Principal Lab Researcher. Yesterday we spotted an unusual phishing email that we'd like to share with readers. If nothing else, it tells us that the increased ...


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