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

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 ...

KnowBe4 Named a Leader in the Summer 2023 G2 Grid Report for Security Awareness Training

Jul 5, 2023 7:30:00 AM By Stu Sjouwerman

We are thrilled to announce that KnowBe4 has been named a leader in the latest G2 Grid Report that compares Security Awareness Training (SAT) vendors based on user reviews, customer ...

The Better Business Bureau Warns of Process-Server Phishbait

Jul 3, 2023 10:51:41 AM By Stu Sjouwerman

The Better Business Bureau (BBB) has warned of a scam in which attackers pose as process servers in order to steal information and commit identity theft.

[FREE Resource Kit] July Is Ransomware Awareness Month

Jun 30, 2023 9:17:26 AM By Stu Sjouwerman

July is Ransomware Awareness Month, and we’ve got you covered with free resources!

Your KnowBe4 Fresh Content Updates from June 2023

Jun 30, 2023 8:00:00 AM By Stu Sjouwerman

Check out the 34 new pieces of training content added in June, alongside the always fresh content update highlights, events and new features.

Use of Crypto Mining Pools to Launder Ransom Funds Grows 100,000% Over 5 Years

Jun 29, 2023 1:18:18 PM By Stu Sjouwerman

New analysis shows sources of cryptocurrency being placed into mining pools with huge deposits that make it easier for cybercriminals to make their ransom funds untraceable.

HTML Files Top the List as the Most Commonly Used Malicious Attachment

Jun 29, 2023 1:18:14 PM By Stu Sjouwerman

As executables and scripts are unable to bypass security solutions as attachments, cybercriminals turn to HTML as a means of obfuscation and malicious execution.

Iranian Threat Actor Charming Kitten Using Spear Phishing Campaign To Distribute Malware

Jun 29, 2023 1:18:11 PM By Stu Sjouwerman

The Iranian threat actor Charming Kitten is launching sophisticated spear phishing attacks to distribute a new version of its POWERSTAR malware, according to researchers at Volexity.

The face of 2023's cyber-threat landscape was an alarming surge in ransomware and phishing attacks

Jun 29, 2023 6:46:30 AM By Stu Sjouwerman

When KnowBe4 went public in April 2021, I got to know a select group of analysts that served as co-managers on our IPO. These professionals all know our industry very well and we spoke ...

Newly Discovered Phishing Attacks Target Bank Customers

Jun 28, 2023 11:16:49 AM By Stu Sjouwerman

First National Bank has warned of an increase in phishing and smishing attacks, IT-Online reports.

National Cyber Security Centre Notes UK Law Firms are Main Target for Cybercriminals

Jun 28, 2023 11:16:46 AM By Stu Sjouwerman

In the most recent Cyber Threat report from the National Cyber Security Centre (NCSC), it is clear that UK law firms are a gold mine for cybercriminals.

Massive Impersonation Phishing Campaign Imitates over 100 Brands and Thousands of Domains

Jun 28, 2023 8:24:49 AM By Stu Sjouwerman

A year-long phishing campaign has been uncovered that impersonates 100+ popular clothing, footwear, and apparel brands using at least 10 fake domains impersonating each brand.

CyberheistNews Vol 13 #26 [Eyes Open] The FTC Reveals the Latest Top Five Text Message Scams

Jun 27, 2023 9:00:00 AM By Stu Sjouwerman

CyberheistNews Vol 13 #26 | June 27th, 2023 [Eyes Open] The FTC Reveals the Latest Top Five Text Message Scams The U.S. Federal Trade Commission (FTC) has published a data spotlight ...

Russian Threat Actor Targets Ukraine Government And Military With Spear Phishing Emails

Jun 27, 2023 8:54:25 AM By Stu Sjouwerman

Russia’s APT28 (also known as “Fancy Bear” or “BlueDelta”) is using spear phishing to compromise Ukrainian government and military entities, according to researchers at Recorded Future. ...

New Singapore Cyber Landscape 2022 Report Shows Russia-Ukraine Conflict, Phishing and Ransomware Attack Increases, and Much More

Jun 27, 2023 8:54:20 AM By Stu Sjouwerman

The “Singapore Cyber Landscape (SCL) 2022” reviews Singapore’s cybersecurity situation in 2022 against the backdrop of global trends and events, and highlights Singapore’s efforts in ...

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Stu Sjouwerman

Books

Recent Posts

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

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

KnowBe4 Named a Leader in the Summer 2023 G2 Grid Report for Security Awareness Training

The Better Business Bureau Warns of Process-Server Phishbait

[FREE Resource Kit] July Is Ransomware Awareness Month

Your KnowBe4 Fresh Content Updates from June 2023

Use of Crypto Mining Pools to Launder Ransom Funds Grows 100,000% Over 5 Years

HTML Files Top the List as the Most Commonly Used Malicious Attachment

Iranian Threat Actor Charming Kitten Using Spear Phishing Campaign To Distribute Malware

The face of 2023's cyber-threat landscape was an alarming surge in ransomware and phishing attacks

Newly Discovered Phishing Attacks Target Bank Customers

National Cyber Security Centre Notes UK Law Firms are Main Target for Cybercriminals

Massive Impersonation Phishing Campaign Imitates over 100 Brands and Thousands of Domains

CyberheistNews Vol 13 #26 [Eyes Open] The FTC Reveals the Latest Top Five Text Message Scams

Russian Threat Actor Targets Ukraine Government And Military With Spear Phishing Emails

New Singapore Cyber Landscape 2022 Report Shows Russia-Ukraine Conflict, Phishing and Ransomware Attack Increases, and Much More

New Cryptocurrency Coinbase Phishing Campaign Uses Social Engineering

SolarWinds' Head Refuses to Back Down Amid Potential US Regulatory Action over Russian hack. CISO Gets Wells Notice

“Picture in Picture” Phishing Attack Technique Is So Simple, It Works

Banking and Retail Top the List of Industries Targeted by Social Media Phishing Attacks

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