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

Cyberheist E-Book

Find all of Stu's books on Amazon

Reshaping the Threat Landscape: Deepfake Cyberattacks Are Here

Oct 1, 2022 12:43:15 PM By Stu Sjouwerman

Jai Vijayan, Contributing Writer at Dark Reading correctly stated: "It's time to dispel notions of deepfakes as an emergent threat. All the pieces for widespread attacks are in place and ...

Response-Based Phishing Scams Targeting Corporate Inboxes Hit New Records

Sep 30, 2022 9:14:06 AM By Stu Sjouwerman

Setting a record for both highest count and share in volume with other types of phishing scams, response-based attacks are at their highest since 2020 and are continuing to grow.

Your KnowBe4 Fresh Content Updates from September 2022

Sep 30, 2022 8:00:00 AM By Stu Sjouwerman

Check out the 35 new pieces of training content added in September, alongside the always fresh content update highlights and new features.

Social Engineering and Bogus Job Offers

Sep 29, 2022 9:37:07 AM By Stu Sjouwerman

Researchers at SentinelOne have warned that North Korea’s Lazarus Group is using phony Crypto.com job offers to distribute macOS malware. The researchers aren’t sure how the lures are ...

[On-Demand Webinar] A Master Class on Cybersecurity: Roger Grimes Teaches Password Best Practices

Sep 28, 2022 3:51:33 PM By Stu Sjouwerman

What really makes a “strong” password? And why are you and your end-users continually tortured by them? How do hackers crack your passwords with ease? And what can/should you do to ...

American Airlines Traces Breach to Phishing Incident

Sep 28, 2022 9:05:46 AM By Stu Sjouwerman

American Airlines has disclosed that an attacker used phishing attacks to breach the company’s systems, BleepingComputer reports.

CyberheistNews Vol 12 #39 [HEADS UP] Bank of America Warns About Recent Scams That Request Zelle Payment Due to 'Suspicious Activity'

Sep 27, 2022 9:30:00 AM By Stu Sjouwerman

87% of Organizations Rank Cyberattacks as the Number One Threat to Their Business

Sep 27, 2022 9:00:49 AM By Stu Sjouwerman

New data sheds a shocking light on just how inexperienced organizations are today in addressing cybersecurity needs – and the impact attacks are having on their business.

FBI: Cyber Criminals Will Continue Targeting Healthcare Payment Processors Through Phishing Campaigns and Social Engineering

Sep 27, 2022 9:00:42 AM By Stu Sjouwerman

Despite the pandemic being largely considered over, a recent Private Industry Notification focused on the Healthcare industry indicates that organizations should remain vigilant.

Fake Emails Purporting to be from UK Energy Regulator

Sep 27, 2022 9:00:35 AM By Stu Sjouwerman

A phishing campaign is impersonating UK energy regulator Ofgem, according to Action Fraud, the UK’s cybercrime reporting centre.

Recent Optus Data Breach Teaches the Importance of Recognizing Social Engineering

Sep 26, 2022 10:00:46 AM By Stu Sjouwerman

Optus, one of Australia's largest telecommunications companies, recently suffered a data breach that affected over 9.8 million customers.

Sentence in a Catphishing Case

Sep 26, 2022 9:59:32 AM By Stu Sjouwerman

A convict serving twenty-five years in South Carolina for voluntary manslaughter and attempted armed robbery, Darnell Kahn, has now also been convicted in a US court on Federal sextortion ...

You Need Aggressive Cyber Training, Not "So, So" Training

Sep 26, 2022 8:00:00 AM By Stu Sjouwerman

According to nearly every study conducted over the last decade, social engineering is involved in the vast majority of cyber attacks. The figures range from about 30% to 90% of all ...

Retail is in Trouble: 77% Of Retail Organizations Have Been Hit by Ransomware

Sep 23, 2022 1:58:17 PM By Stu Sjouwerman

With Retail seeing and feeling the impact of more ransomware attacks than nearly every other industry, a new report focuses in on what the repercussions look like for this sector… and ...

“Browser-in-the-Browser” Phishing Technique Spotted in New Steam Account Attack

Sep 23, 2022 1:58:10 PM By Stu Sjouwerman

Luring victims using a realistic- and legitimate-looking fake browser window to steal Steam accounts, this new type of social engineering may be a sign of things to come.

Phishing Campaign Targets GitHub Users

Sep 23, 2022 9:15:50 AM By Stu Sjouwerman

GitHub has issued an alert warning of a phishing campaign targeting users by impersonating the popular DevOps tool CircleCI, BleepingComputer reports. The phishing emails inform users ...

Security Practices Are Improving, But Cybercriminals Are Keeping Up

Sep 21, 2022 2:48:10 PM By Stu Sjouwerman

A survey by the Spanish GetApp software rating site has found that the number of organizations using phishing simulations has risen from 30% in 2019 to 70% in 2022. Despite this positive ...

Phishing Attacks Reach an All-Time High, Quadrupling That of Early 2020

Sep 21, 2022 10:20:31 AM By Stu Sjouwerman

New quarterly data from the Anti-Phishing Working Group shows unprecedented phishing activity with increases in BEC, use of social media, vishing, and smishing.

CyberheistNews Vol 12 #38 [HEADS UP] New Uber Security Breach 'Looks Bad', Caused by Social Engineering

Sep 20, 2022 9:30:00 AM By Stu Sjouwerman

Social Engineering Targets Healthcare Payment Processors

Sep 19, 2022 8:57:39 AM By Stu Sjouwerman

The US Federal Bureau of Investigation (FBI) has issued an alert warning of an increase in phishing and other social engineering attacks against healthcare payment processors.

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