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

Unusual Blank-Image Phishing Attacks Impersonate DocuSign

Jan 20, 2023 8:59:19 AM By Stu Sjouwerman

An unusual phishing technique has surfaced this week. Avanan, a Check Point Software company, released a blog Thursday morning detailing a new attack in which hackers hide malicious ...

[Eye Popper] Ransomware Victims Refused To Pay Last Year

Jan 20, 2023 7:03:01 AM By Stu Sjouwerman

Finally some good news from the ransomware front! Despite bad actors launching a number of ransomware campaigns throughout 2022, organizations refused to submit and paid criminals an ...

Phishing For Industrial Control Systems

Jan 19, 2023 8:42:58 AM By Stu Sjouwerman

Mandiant has published a report describing phishing emails that have breached organizations in the industrial sector. Mandiant explains that the majority of phishing attacks are ...

The Amazing Thing Is that DHL Phishing Campaigns STILL Work

Jan 18, 2023 2:23:24 PM By Stu Sjouwerman

Researchers at Armorblox warn that a phishing campaign is impersonating DHL with fake shipping invoices.

CyberheistNews Vol 13 #03 [Eye Opener] Password Managers Can Be Hacked Lots of Ways and Yes, You Should Still Use Them

Jan 17, 2023 9:00:00 AM By Stu Sjouwerman

Spear Phishing Campaign Targets Southeast Asia

Jan 17, 2023 8:52:07 AM By Stu Sjouwerman

Researchers at Group-IB are tracking a previously unknown threat actor dubbed “Dark Pink” that’s using spear phishing attacks to target government, military, and religious organizations. ...

Cybercriminals Mimic Victim Website to Publish Exfiltrated Data on the Public Web

Jan 17, 2023 8:51:59 AM By Stu Sjouwerman

In a new twist, threat actors use a typo squatted domain name to increase the chances that stolen data will be seen by the general public after not being paid the ransom.

Government, Higher Ed, School Districts, and Healthcare Continue to be Victims of Ransomware Attacks

Jan 17, 2023 8:51:52 AM By Stu Sjouwerman

An analysis of the publicly-accessible data on ransomware attacks shows that these sectors that were a primary target of ransomware in 2021 continued as targets in 2022 to the same degree.

Cyberinsurer Beazley Introduces a $45M Cyber Catastrophe Bond to Offset Risk

Jan 17, 2023 8:51:45 AM By Stu Sjouwerman

In a move designed to protect the insurer and allow for more cyber policies to be issued, this bond is new to cyberinsurance, but not to insurers as a whole.

KB4-CON 2023 Agenda is Now Available!

Jan 17, 2023 8:40:44 AM By Stu Sjouwerman

Exciting news! We just released our full conference agenda for KB4-CON 2023, happening April 24-26 in Orlando, Florida. We’ve brought back some of your favorite sessions and have some new ...

[INFOGRAPHIC] PhishER by the Numbers

Jan 16, 2023 9:22:16 AM By Stu Sjouwerman

PhishER, KnowBe4’s industry-leading Security Orchestration, Automation and Response (SOAR) platform, takes an otherwise complicated and inefficient threat management workflow and allows ...

[New Feature] Continuously Monitor for Any Detected Password Vulnerabilities Within Your User Base with PasswordIQ

Jan 16, 2023 9:21:53 AM By Stu Sjouwerman

We’re thrilled to announce that the power of KnowBe4’s most popular free password security tool has been brought to your KnowBe4 console as a new feature!

Check Point Software: "2022 Saw A Huge Rise In Cyberattacks"

Jan 16, 2023 8:42:12 AM By Stu Sjouwerman

Techradar reported that cyberattacks saw a significant rise in 2022, mostly due to the increase in organizations going virtual to combat the effects of the Covid-19 pandemic, and the rise ...

[Ache In the Head] The Problems With Your Not-So-Secure Email Gateway

Jan 14, 2023 9:59:24 AM By Stu Sjouwerman

I have been doing some research on Secure Email Gateways. The picture is not that pretty. Below I will summarize what I found.

[Heads Up] Phishing Attacks Are Now The Top Vector For Ransomware Delivery

Jan 13, 2023 6:57:21 AM By Stu Sjouwerman

Phishing attacks are now the top vector for ransomware delivery, according to researchers at Digital Defense. Phishing emails can be highly tailored to specific employees in order to ...

Government Workers as Phishing Targets

Jan 12, 2023 8:56:34 AM By Stu Sjouwerman

Government workers are prime targets for social engineering attacks, according to Kaitlyn Levinson at GCN. Attackers use different tactics to target government employees in specific ...

21% of federal agency passwords cracked in their security audit

Jan 11, 2023 10:38:29 AM By Stu Sjouwerman

Some excellent work here. An internal US Government agency audit showed that a fifth of passwords were easy to crack. Their recently published study showed that hashes for well over ...

Italian Cybercriminal Pleads Guilty to Phishing for Book Manuscripts

Jan 11, 2023 9:28:06 AM By Stu Sjouwerman

An Italian citizen named Filippo Bernardini has pleaded guilty in New York to stealing more than a thousand unpublished book manuscripts from various well-known authors. The targeted ...

CyberheistNews Vol 13 #02 [Bad Taste] There Is a New Trend in Social Engineering With a Disgusting Name; 'Pig-butchering'

Jan 10, 2023 9:00:00 AM By Stu Sjouwerman

The Good, the Bad and the Truth About Password Managers

Jan 9, 2023 10:36:23 AM By Stu Sjouwerman

We strongly recommend that you use a password manager to reduce password reuse and improve complexity, but you may be wondering if it’s really worth the risk. Is it safe to store all of ...

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