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

Phishing Attacks Employing QR Codes Are Capturing User Credentials

Jul 12, 2023 10:11:56 AM By Stu Sjouwerman

Using a new twist to bypass detection from security solutions, cyber attacks are now employing QR codes that your users will not recognize as anything suspicious.

Launch Of New Meta Thread App Spawns Hundreds Of Spoof Domains

Jul 12, 2023 8:56:35 AM By Stu Sjouwerman

Researchers at Veriti have observed hundreds of spoofed domains following Meta’s launch of its Threads social media platform.

Phishing Campaigns Are Now Targeting the Hospitality and Tourism Ponds

Jul 11, 2023 9:01:05 AM By Stu Sjouwerman

A phishing campaign is targeting the tourism and hospitality industries, according to researchers at Votiro.

CyberheistNews Vol 13 #28 [Beware] Microsoft Teams Exploit Uses Social Engineering to Spread Malware

Jul 11, 2023 9:00:00 AM By Stu Sjouwerman

Job Recruitment Scams Rising Due to Social Engineering

Jul 10, 2023 10:52:29 AM By Stu Sjouwerman

Job scams are a rising form of socially engineered cybercrime. And while it’s easy to imagine the trouble they cause individuals who innocently fall for them (lost opportunities, identity ...

New Phishing Benchmarks Unlocked: Is Your Organization Ahead of the Curve in 2023

Jul 10, 2023 10:51:29 AM By Stu Sjouwerman

Cybercriminals continue to rely on proven attack methods while developing new ways to infiltrate digital environments and break through your human defense layer.

[Live Demo] Ridiculously Easy Security Awareness Training and Phishing

Jul 10, 2023 8:00:00 AM By Stu Sjouwerman

Old-school awareness training does not hack it anymore. Your email filters have an average 7-10% failure rate; you need a strong human firewall as your last line of defense.

Amazon Prime Day Alert: Beware of Fake Logins, Gift Card Scams

Jul 7, 2023 11:39:18 AM By Stu Sjouwerman

A new threat alert from ConsumerAffairs and TrendMicro proves more than just shoppers will take advantage of Amazon’s upcoming Prime Day.

The Number of Phishing Attack Cases in Singapore Jump by 185%

Jul 7, 2023 11:15:00 AM By Stu Sjouwerman

The latest data provided by the Singapore Cyber Emergency Response Team (SingCERT) shows the number of attacks trending in the wrong direction, with some indicators that the good guys ...

U.K. Twitter Impersonation Hacker Sentenced to Prison in the U.S.

Jul 7, 2023 11:00:00 AM By Stu Sjouwerman

The British national responsible for hacking into and impersonating high-profile individuals as part of a crypto theft scheme has been sentenced to five years in prison.

Free Unsolicited Smartwatch in the Mail and I’m in the Military? What Could Possibly Go Wrong???

Jul 7, 2023 11:00:00 AM By Stu Sjouwerman

From the “shaking our heads” files comes the story of how threat actors compromised military personnel mobile devices, credentials, accounts and more.

Camaro Dragon APT Group Continues to Employ USB Devices as Initial Attack Vector

Jul 7, 2023 10:50:41 AM By Stu Sjouwerman

Apparently expanding efforts outside of Southeast Asian countries, this threat group’s known malware has shown up in a European healthcare facility, raising concerns for USB-based attacks.

Email-Based Cyber Attacks in Europe Increase 7-Fold in Just One Year

Jul 7, 2023 10:50:09 AM By Stu Sjouwerman

An abnormally massive focus on business email compromise attacks in Europe has fueled an equally large growth in overall email attacks there, with the U.S. also seeing significant attack ...

Microsoft Teams Cyber Attack Exploit Tool Relies on Social Engineering to Deliver Malware

Jul 7, 2023 8:00:00 AM By Stu Sjouwerman

If your organization uses Microsoft Teams, then you definitely want to hear about a new way bad actors are exploiting this newly discovered cyber attack tool.

New Report Shows Social Engineering and Business Email Compromise Attacks Have Drastically Increased in 2023

Jul 6, 2023 8:45:53 AM By Stu Sjouwerman

Email-based social engineering attacks have risen by 464% this year compared to the first half of 2022, according to a report by Acronis. Business email compromise (BEC) attacks have also ...

Nerve Center: Protect Your Network Against New Ransomware Strains with Our Latest RanSim Update

Jul 6, 2023 8:00:00 AM By Stu Sjouwerman

Ransomware continues to be a major threat for all organizations and, according to the Verizon 2023 Data Breach Investigations Report, is still present in 24% of breaches.

Threat Actors are Using Image-Based Phishing Emails to Lure Victims

Jul 6, 2023 7:30:00 AM By Stu Sjouwerman

Attackers are increasingly using images in phishing to evade text-based security filters, according to researchers at INKY.

Japan's Largest Port is the Latest Victim of a Ransomware Attack

Jul 5, 2023 9:23:22 AM By Stu Sjouwerman

The largest port in Japan, Nagoya, is now the most recent victim of a ransomware attack.

CyberheistNews Vol 13 #27 [Heads Up] Massive Impersonation Phishing Campaign Imitates Over 100 Brands and Thousands of Domains

Jul 5, 2023 9:00:00 AM By Stu Sjouwerman

CyberheistNews Vol 13 #27 | July 5th, 2023 [Heads Up] Massive Impersonation Phishing Campaign Imitates Over 100 Brands and Thousands of Domains A year-long phishing campaign has been ...

KnowBe4 Named a Leader in the Summer 2023 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR)

Jul 5, 2023 8:00:00 AM By Stu Sjouwerman

We are excited to announce that KnowBe4 has been named a leader in the Summer 2023 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) for the PhishER platform for ...

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