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

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Social Engineering Campaign against African Banks

Apr 18, 2022 9:40:04 AM By Stu Sjouwerman

A phishing campaign is targeting African banks with a technique called “HTML smuggling” to bypass security filters, according to threat researchers at HP.

“Being Annoying” as a Social Engineering Approach

Apr 18, 2022 8:42:15 AM By Stu Sjouwerman

Attackers are spamming multifactor authentication (MFA) prompts in an attempt to irritate users into approving the login, Ars Technica reports. Both criminal and nation-state actors are ...

Q1 2022 Report: Holiday-Themed Phishing Emails Entice Employees to Click [INFOGRAPHIC]

Apr 15, 2022 10:49:24 AM By Stu Sjouwerman

KnowBe4's latest quarterly report on top-clicked phishing email subjects is here. We analyze the top categories, general subjects (in both the United States and globally), and 'in the ...

Small and Medium Businesses Account for Nearly Half of all Ransomware Victim Organizations

Apr 13, 2022 4:44:27 PM By Stu Sjouwerman

As ransomware costs increase, along with the effectiveness and use of extortions, smaller businesses are paying the price, according to new data from Webroot.

One in Three U.K. Businesses Experience Cyber Attacks Weekly

Apr 13, 2022 4:43:29 PM By Stu Sjouwerman

New data from the U.K. Government’s Cyber Security Breaches Survey 2022 report shows that a material portion of businesses and charities are being attacked and feeling the repercussions.

Meta Stops Three Cyber Espionage Groups Targeting Critical Industries

Apr 13, 2022 4:43:06 PM By Stu Sjouwerman

Impersonating legitimate companies and using a complex mix of fake personas across Facebook, Telegram, and other platforms, these groups used social engineering to gain network access.

Smishing Scams Abuse Name of Legitimate Ukrainian Charity

Apr 13, 2022 9:54:14 AM By Stu Sjouwerman

Researchers at Trend Micro have spotted yet another scam taking advantage of the crisis in Ukraine by impersonating a legitimate charity. In this case, the scammers are posing as the ...

CyberheistNews Vol 12 #15 [Heads Up] Hard-boiled Social Engineering by a Fake "Emergency Data Request"

Apr 12, 2022 9:31:43 AM By Stu Sjouwerman

CyberheistNews Vol 12 #15 | Apr. 12th., 2022 [Heads Up] Hard-boiled Social Engineering by a Fake "Emergency Data Request" Bloomberg has reported that forged "Emergency Data Requests" last ...

Business Email Compromise (BEC): the Costliest Cybercrime

Apr 12, 2022 8:52:35 AM By Stu Sjouwerman

Organizations in the US lost $2.4 billion to business email compromise (BEC) scams (also known as CEO fraud) last year, according to Alan Suderman at Fortune.

Microsoft Azure's Static Web Apps Service Becomes the New Home for Phishing Attacks

Apr 11, 2022 3:15:00 PM By Stu Sjouwerman

Taking advantage of the value of a legitimate web service, along with a valid SSL certificate, a new campaign of phishing attack targeting online Microsoft credentials is leveraging Azure.

KnowBe4 Named a Leader in the Spring 2022 G2 Grid Report for Security Awareness Training

Apr 11, 2022 8:00:00 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 ...

KnowBe4's PhishER Platform Named a Leader in the Spring 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR)

Apr 8, 2022 9:06:44 AM By Stu Sjouwerman

We are excited to announce that KnowBe4 has been named a leader in the Spring 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR) for the fourth consecutive ...

[On-Demand] The Ransomware Hostage Rescue Checklist: Your Step-by-Step Guide to Preventing and Surviving an Ransomware Attack

Apr 8, 2022 8:30:51 AM By Stu Sjouwerman

Skyrocketing attack rates, double and triple extortion, increasing ransom demands… cybercriminals are inflicting pain in every way imaginable when it comes to today’s ransomware attacks. ...

Security Awareness Training Blog

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Stu Sjouwerman

Books

Recent Posts

Social Engineering Campaign against African Banks

“Being Annoying” as a Social Engineering Approach

Q1 2022 Report: Holiday-Themed Phishing Emails Entice Employees to Click [INFOGRAPHIC]

Small and Medium Businesses Account for Nearly Half of all Ransomware Victim Organizations

One in Three U.K. Businesses Experience Cyber Attacks Weekly

Meta Stops Three Cyber Espionage Groups Targeting Critical Industries

Smishing Scams Abuse Name of Legitimate Ukrainian Charity

CyberheistNews Vol 12 #15 [Heads Up] Hard-boiled Social Engineering by a Fake "Emergency Data Request"

Business Email Compromise (BEC): the Costliest Cybercrime

Microsoft Azure's Static Web Apps Service Becomes the New Home for Phishing Attacks

KnowBe4 Named a Leader in the Spring 2022 G2 Grid Report for Security Awareness Training

KnowBe4's PhishER Platform Named a Leader in the Spring 2022 G2 Grid Report for Security Orchestration, Automation, and Response (SOAR)

[On-Demand] The Ransomware Hostage Rescue Checklist: Your Step-by-Step Guide to Preventing and Surviving an Ransomware Attack

Phishbait Invokes Russia's Ministry of Internal Affairs (Road Safety Division)

“Human Error” Ranked as the Top Cybersecurity Threat While Budgets Remain Misaligned

Multi-Million Dollar Scam Call Center Shut Down by Multinational Police Efforts

Mailchimp Phishing Attack Results in Potential Hit on 100K Trezor Crypto Wallets

“Europol Calling” (Not Necessarily)

Microsoft Warns of Lapsus$ “Targeting Organizations for Data Exfiltration and Destruction”

Info Stealer Malware Vidar Uses Microsoft Help Files to Launch Attacks

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