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

New “Karakurt” Threat Group is Gaining Attention Through Multiple and Frequent Extortion Attacks

A new warning from Accenture Security highlights this new cybercriminal group making waves that focuses on a "data breach and extortion” MO rather than relying on ransomware.

Omicron-Themed Phishing Campaign is Running Rampant

A mean-spirited phishing campaign is mocking victims after infecting their devices with Dridex malware, according to Lawrence Abrams at BleepingComputer.

Organizations Worldwide Experience Over 722 Million Attacks in the Last 30 Days!

Analysis of data collected by Internet and security services vendor Akamai shows an unimaginable number of cyberattacks, demonstrating how frequently these attacks are happening.

Conti Ransomware Affiliate Attacks Australian Utilities Giant's Corporate Network

While news reports indicate no impact to the utilities company’s ability to deliver electricity to its’ customers, this could be the start of attacks on critical infrastructure in ...

Google Takes a Step Towards Reducing the Use of Calendar Invitations as Phishing Tools

Doing their part, Google adds new functionality that defaults to automatically adding Google-based calendar invites to a victim’s calendar to lower the malicious value of an invite.

West Virginia Healthcare Breach Traced to Phishing

Monongalia Health System in West Virginia has disclosed a data breach that exposed sensitive patient and employee information.

[Eye Opener] New Phishing Research Shows 37% of Sites Had More Than a Day Downtime

More than half (55%) of phishing attacks target IT departments, according to research commissioned by OpenText. Additionally, nearly half of survey respondents said they had fallen for a ...

New Nigerian Phishing Scams Target U.S. Military Families with Needed “Services”

With loved ones potentially a half a world away, scammers prey on families with scams that offer to assist with communication, care packages, leave, and more.

Office 365 “Spam Notification” Phishing Emails Seek to Capture Credentials

A new campaign spotted in the wild uses a tried-and-true method of convincing victims to provide their Office 365 logon credentials to be used in future attacks.

U.K. Workers Aren’t Concerned about Company Cybersecurity Despite 60% Having Been Victims of a Cyberattack

New data shows a huge disparity between the likelihood of cyberattack against U.K. organizations and their employee’s cybersecurity awareness and vigilance.

One-Third of Phishing Pages Are Inactive After Just One Day

We’ve always known phishing scammers work very quickly, moving from campaign to campaign, but new data indicates some scammers are moving on in terms of literally hours.

Canadian Government Urges Organizations to Take Additional Steps to Protect Against Ransomware Attacks

Citing upticks in attacks, Canada’s Centre for Cyber Security asks organizations to step up protective measures, offering guidance and a playbook to improve security.

With KnowBe4’s Phish Alert Button, You Can Now Collect Feedback from Your Users When They Report Suspicious Emails

We are excited to announce the availability of KnowBe4’s enhanced Phish Alert Button for Microsoft 365 with the new User Comments feature!

Phishing Campaign Impersonates Pfizer

A phishing campaign is impersonating Pfizer with phony request-for-quotation (RFQ) emails, according to Roger Kay at INKY. The email lures had fairly convincing PDF attachments that ...

Phishing Remains Top Form of Cybersecurity Breach in 2021

Over half of organizations say they’ve experienced a cybersecurity breach caused by phishing in the last 12 months, dwarfing the second-place breach cause (malware) by almost 30%.

Double Extortion Ransomware Attacks That Publish Victim Data Increase 935%

According to new data, the number of victim companies impacted by double extortion has jumped from 229 by the first half of 2020 to nearly 2400 by the first half of 2021.

Embedded Email Attacks Are on the Rise and Aren’t Being Detected by Security Solutions

This classic tactic is making a comeback and is elegantly simple to execute, yet sufficiently complex enough to keep email scanning solutions from seeing it as malicious.

Spam Calling Rates Spike Globally

Spam calls in the US spiked in October, according to Truecaller’s annual Global Spam Report. The report observed that Truecaller customers in the US received 3,115,861 spam calls in ...


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