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

Beware: Lots of COVID-19 Vaccine-Related Attacks Are Active and Looking for Their Next Victim

From spear phishing attacks, to malicious domains, to credential-hunting – as I predicted, COVID vaccines are the hot attack theme right now from just about every angle.

Exchange Exploit Attempts Surge Sixfold as Ransomware Lands

The Phil Muncaster at Info Security Mag had it first: "The number of global exploit attempts targeting vulnerable Microsoft Exchange servers has risen sixfold over the past few days, as ...

The Evolving Cybercriminal Market Has Given Birth to Impersonation-as-a-Service as Attackers Seek to Impersonate at Scale

New research documents Impersonation-as-a-Service (IMPaaS) as an emerging threat where profiles of victim users are available to be used in campaigns where impersonation is critical.

[On-Demand Webinar] Avoiding Business Email Compromise Phishing Scams During Tax Season

Taxes are unavoidable, and unfortunately, so are the annual tax-related phishing scams. This year, with the COVID-19 pandemic continuing to keep people working from home, cybercriminals ...

The Most Commonly Spoofed Business-Related Applications in a Phishing Campaign

Business-related applications like Zoom, Microsoft, and DocuSign are the most commonly spoofed services in phishing attacks, according to a new report from GreatHorn. Business apps made ...

Microsoft Exchange Server hacks ‘doubling’ every two hours | ZDNet

Cyberattackers are taking full advantage of slow patch or mitigation processes on Microsoft Exchange Server with attack rates doubling every few hours. According to Check Point Research ...

[Security Alert Webinar] The Microsoft Exchange Mass Hack Is a Huge Security Risk For All Organizations and What You Can Do About It

On March 2, Microsoft released emergency security updates to plug multiple zero-day security holes in Exchange Server versions 2010 through 2019 that hackers were actively using to siphon ...

Credential Harvesting Attacks Targeting the U.S. Federal Government Nearly Double as Malware Declines

Shifts to a remote workforce in 2020 gave cybercriminals an opportunity to change tactics, focusing on credentialed access to systems accessed from outside government networks.

FINRA Warns of Phishing Attacks

The Financial Industry Regulatory Authority (FINRA) has warned of a phishing campaign that’s trying to trick users into responding to a phony regulatory non-compliance issue. The emails ...

See what happened when we "Zoom bombed" a customer with the cast of The Inside Man

Yes, this actually happened. The employees at Tennessee Aquarium were massive fans of The Inside Man, were not aware of this gag, and you can see their reactions when they see who the ...

[Heads Up] Has Your Exchange Been Hacked And Is Now A Ticking Time Bomb?

Brian Krebs wrote: "Globally, hundreds of thousand of organizations running Exchange email servers from Microsoft just got mass-hacked, including at least 30,000 victims in the United ...

Fake reCAPTCHA Found in Phishbait

Researchers at Zscaler warn of an ongoing phishing campaign targeting executives with fake voicemail notifications. More than half of the phishing emails have targeted organizations’ vice ...

Recognizing Elder Scams

People need to ensure that their elderly relatives are aware of scams that target older people, according to Emma McGowan at Avast. McGowan says it’s best to avoid being condescending, ...

The Different Scenarios How Backups are Vulnerable to Ransomware Attacks

Organizations need to ensure that their data backups aren’t tampered with by attackers, according to security firm Datto. In an article for Channel Futures, Datto explained that backups ...

WSJ: Russian Disinformation Campaign Aims to Undermine Confidence in Covid-19 Vaccines

The Wall Street Journal reports: " Russian intelligence agencies have mounted a campaign to undermine confidence in Pfizer Inc.’s and other Western vaccines, using online publications ...

[Heads Up] The Bad Guys Have Likely Hacked Your Exchange Email Server

What if Chinese state-sponsored hackers have owned your OWA using several brand-new zero-day vulns? Or Eastern Europe ransomware gangs? On March 2, Microsoft released emergency security ...

Think Your Cyber Insurance is Going to Cover that $6 Million in Cyber Fraud? Think Again.

The latest tale of an organization falling victim to a business email compromise attack on their credit card processor highlights how very specific the scenario needs to be to see a ...

1 in 4 Business Email Compromise Attacks Use Lookalike Domains to Trick Victims

The latest Data on BEC scams shows how the bad guys are using a mix of gmail accounts, increases in stolen wire transfers, and a shift to payroll diversions to trick you out of your money.

Phishing Attacks Continue to Impersonate Trusted Brands to Deceive Potential Victims

The use of impersonation in phishing attacks helps to establish credibility and a sense of ease. New data shows exactly how the bad guys are using this tactic to their advantage.


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