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

U.S. Homeland Security: "Malicious Actors Expected To Focus Attacks On Teleworkers. Secure Your VPN"

The Department of Homeland Security's cybersecurity agency this week shared tips on how to properly secure enterprise virtual private networks (VPNs) seeing that a lot of organizations ...

Keeping our employees and partners safe during #coronavirus

Our top priority remains the health and safety of our Knowsters, and we also have a responsibility to support partners and the local community in all the countries we operate.

FBI: Ransomware Attacks Have Cost Victims over $140 Million With Ryuk Leading the Way

New details presented at RSA 2020 outline which ransomware variants are the highest paid over the last 6 years and what was their share of the millions paid in ransom.

U.K. Pensions Regulator Sees 145 Percent Increase in Malicious Email Activity

The U.K. Government’s massive jump in email-based cyberattacks far outpaces even the most aggressive phishing or spam growth numbers seen this year.

[Heads Up] Your Exfiltrated Ransomware Data Is Now Used To Spearphish Your Business Partners

Ransomware operators are continually improving their tactics to ensure more lucrative payouts, according to Information Security Media Group (ISMG). Over the past several years, attackers ...

[Heads Up!] A Whopping 21 Percent of Phishing Attack URLs Are Not Detected As Malicious For Days After They Go Live

New data from Akamai provides insight into why phishing attacks are making it all the way to the endpoint… and why they can trick users so easily into becoming a victim.

A Look at Email Security in the US Healthcare Sector

90% of US healthcare organizations experienced email-based attacks in the past year, and 25% of these organizations said the attacks were extremely or very disruptive, according to a new ...

Ransomware Attack on Police Department Encrypts Evidence, Sets Criminals Free

Holding data for ransom often has business repercussions beyond just delays and inconvenience. In the case of a police investigation, it’s putting criminals back on the street.

Cyberattacks on MSPs Grow Exponentially as the Focus Shifts to Hold Their Customer’s Data for Ransom

Recent insight from data protection vendor Datto puts MSPs on notices to secure their own environments to protect both their business and that of their customers.

Cruel Hoax Scams Elderly Woman

An 89-year-old woman in Delaware lost $9,500 to scammers who told her that her grandson had been arrested for causing a car accident, Delaware Online reports. The scammers called the ...

Ransomware Predicted to Cost $20 Billion in Damages Globally by 2021

As the state of ransomware attacks shift from simple data encryption scams to attacks intent on bringing an organization’s network to its’ knees, the cost of remediation is expected to ...

February Content Update: Including Season 2 of Netflix-Style Series 'The Inside Man'

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

New Norton LifeLock Phishing Scam Installs Remote Access Trojan

In yet another case of brand impersonation, this new phishing scam seeks out the millions of LifeLock customers and follows a seasoned infection path, with the goal being persistence and ...

Yet Another Utility Company Falls Victim to Ransomware Attack

The latest ransomware attack on yet another utility company echos the warnings from last year’s report on utilities’ readiness for a cyberattack.

Stealthy 'Netwalker' Ransomware Using Windows Explorer And 'Art of Deception' To Infect Enterprise Networks

Researchers at Quick Heal Security Labs have discovered a new strain of the “Mailto” ransomware nicknamed “Netwalker" that uses the art of deception to evade detection. The new strain ...

Did you know that KnowBe4 provides Managed Phishing Services?

You have determined the need for a mature, effective security awareness training program to make sure your employees do not fall for phishing emails or social engineering attacks. As part ...

UK Telegraph: "Huge ransomware attack laid bare French lingerie firm"... And Bankrupted It

Leave it to the wordsmiths of the British Press to come up with a catchy title like this... However, the topic is dead serious.

Anti-Virus, Identity Protection Phishbait

A phishing campaign is using fake NortonLifelock documents to trick victims into installing a remote access tool, according to researchers at Palo Alto Networks’ Unit 42. The documents ...

KnowBe4 and Agari Announce New Partnership to Transform Phishing Protection

As market leaders, KnowBe4 and Agari have joined forces to help stop identity-based email attacks. Together, we have created a best-in-class approach to defend against phishing attacks at ...


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