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Security Awareness Training Blog

Keeping You Informed. Keeping You Aware.
Stay on top of the latest in security including social engineering, ransomware and phishing attacks.

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Stu Sjouwerman

Stu Sjouwerman

Chief Executive Officer & President

Stu Sjouwerman (pronounced “shower-man”) is the founder and CEO 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.

Books

Find all of Stu's books on Amazon

Recent Posts

U.K. Employees Pose a Major Cybersecurity Risk to Business as They Return to the Office

Jul 27, 2021 1:16:12 PM By Stu Sjouwerman
After well over a year of getting used to working from home, as U.K. employees look to head back into the office, new data shows they don’t see themselves as a cyber risk (which makes ...
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77% of Organizations Are Unable to Access Systems or Networks Post-Ransomware Attack

Jul 27, 2021 1:16:03 PM By Stu Sjouwerman
The fallout after a ransomware attack is more devastating than previously thought. New data spells out what you should really expect after being hit with ransomware.
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CyberheistNews Vol 11 #29 [Heads Up] New Phishing Threat Infographic: Your Users Are Failing Security and HR-Related Attacks

Jul 27, 2021 9:37:52 AM By Stu Sjouwerman
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Phishing Attacks Surged in Q2 2021

Jul 27, 2021 8:37:21 AM By Stu Sjouwerman
Phishing activity increased dramatically in the second quarter of 2021, according to a recent report by Vade. The company observed 4.2 billion phishing emails in June alone.
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Milanote Exploited to Host Phishing Content

Jul 26, 2021 9:39:19 AM By Stu Sjouwerman
Researchers at Avanan warn that attackers are exploiting the collaboration and note-taking app Milanote to host phishing links.
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Remote Employees Adopt Bad Cybersecurity Habits While Working from Home

Jul 23, 2021 8:24:43 AM By Stu Sjouwerman
A new report focused on businesses looking to bring employees back to the office makes it very clear that security leaders are concerned, as remote workers have been anything but secure.
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U.S. State Department Issues a Reward for Information on Foreign Cybercriminals Targeting Critical Infrastructure

Jul 23, 2021 8:24:29 AM By Stu Sjouwerman
In the wake of cyberattacks targeting U.S. infrastructure organizations, the U.S. government is stepping up measures to identify foreign threat actors and bring them to justice.
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Updated Ransomware Simulator Now With 23 Latest Infection Scenarios

Jul 23, 2021 8:00:00 AM By Stu Sjouwerman
As ransomware techniques continue to evolve, two new ransomware strains, DearCry and Black Kingdom, were blamed for the huge Microsoft Exchange server attacks earlier this year, which ...
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Microsoft Takes Down Homoglyph Domains

Jul 22, 2021 10:44:51 AM By Stu Sjouwerman
Microsoft has taken legal action to shut down eighteen domains that were being used in business email compromise (BEC) attacks. The sites in question used homoglyphs to impersonate ...
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[HEADS UP] 2021 Tokyo Olympics Mean Olympic-Themed Phishing Attacks

Jul 21, 2021 8:59:13 AM By Stu Sjouwerman
Last year, we reported that authorities warned of the Tokyo Olympics phishing attacks. Then the global pandemic occurred, and the games were postponed. Well, now the games have ...
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Mint Mobile, Porting Numbers, and Identity Theft

Jul 21, 2021 8:47:55 AM By Stu Sjouwerman
US telecommunications company Mint Mobile warned some users that their phone numbers had temporarily been ported to another carrier by an unauthorized individual, which allowed the ...
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Microsoft Continues to be the Top Impersonated Brand in Phishing Attacks

Jul 20, 2021 9:58:29 AM By Stu Sjouwerman
New data from CheckPoint identifies those brands being used by threat actors to trick victims into opening attachments, clicking links, providing credentials, and giving up personal ...
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The Cost and Impact of Cybercrime Can Now Be Measured in a Single Minute

Jul 20, 2021 9:57:55 AM By Stu Sjouwerman
With the number of threat actors growing rapidly, along with an increased frequency of attacks, RiskIQ has put together a sobering perspective of how cybercrime impacts us in just 60 ...
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CyberheistNews Vol 11 #28 [HEADS UP] Live Phishing Attack Uses New Infection Technique to Deliver Malware

Jul 20, 2021 9:46:36 AM By Stu Sjouwerman
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[INFOGRAPHIC] New Report Shows Users Are Falling for Security and HR-Related Phishing Attacks

Jul 19, 2021 5:04:04 PM By Stu Sjouwerman
KnowBe4's latest quarterly report on top-clicked phishing email subjects is here. These are broken down into three different categories: social media related subjects, general subjects, ...
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New LuminousMoth APT Takes a Double-Infection Vector Approach to Attacks

Jul 19, 2021 1:45:55 PM By Stu Sjouwerman
Spotted by security researchers at Kaspersky Labs, this large-scale yet extremely targeted campaign of attacks focuses on government organizations within Southeast Asia.
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Nearly Every Organization Has Had an Insider-Caused Data Breach in the Last Year

Jul 19, 2021 1:45:35 PM By Stu Sjouwerman
Whether it’s from an accidental leak of data or falling victim to a phishing attack, new data from email security vendor Egress puts the insider’s role in breaches into critical ...
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Facebook Disrupts Iranian Social Engineering Operation

Jul 19, 2021 9:38:15 AM By Stu Sjouwerman
Facebook has taken down an operation by Iranian hackers targeting military, defense, and aerospace entities, particularly focused on the US.
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[On-Demand Webinar] 2021 Phishing By Industry Benchmarking Report

Jul 19, 2021 8:00:00 AM By Stu Sjouwerman
As a security leader, you have a lot on your plate. Even as you increase your budget for sophisticated security software, your exposure to cybercrime keeps going up. IT security seems to ...
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KnowBe4 Receives Four ISO Certifications From ISOQAR, A Certifying Organization

Jul 17, 2021 9:50:38 AM By Stu Sjouwerman
KnowBe4, the provider of the world’s largest security awareness training and simulated phishing platform, announced that it has received four certifications – ISO 27001:2013, ISO ...
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