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

Cyber Crime Refines Their Social Engineering Tactics

Jul 2, 2019 9:43:52 AM By Stu Sjouwerman

Attackers are improving their strategies by accounting for new developments in technology, Help Net Security reports. Researchers at FireEye analyzed 1.3 billion phishing emails and ...

Enter Facebook's Libra, with Scammers in its Train

Jul 2, 2019 8:49:03 AM By Stu Sjouwerman

Within twenty-four hours of Facebook’s announcement of its new Libra cryptocurrency and Calibra digital wallet, more than three-hundred sites were registered with domain names associated ...

Dridex Credential Stealer Returns With New Antivirus Evasion - Including Application Whitelisting

Jul 1, 2019 4:41:32 PM By Stu Sjouwerman

SCMag reported that a new strain of the notorious Dridex malware has been spotted using polymorphism antivirus evasion techniques in phishing emails. The Dridex credential-stealer that ...

CyberheistNews Vol 9 #28 1.5 Billion Gmail Calendar Users Are the Target of a Crafty New Phishing Scam

Jul 1, 2019 9:49:02 AM By Stu Sjouwerman

Brand-New Tool: Social Media Phishing Test Checks for Users Vulnerable to Social Media Related Attacks

Jul 1, 2019 9:47:08 AM By Stu Sjouwerman

Phishing is still the #1 threat action used in social engineering attacks, and spear phishing, in particular, takes advantage of your users’ socially networked lives.

Instagram Vanity Makes for Vulnerability

Jul 1, 2019 9:34:08 AM By Stu Sjouwerman

Scammers are targeting Instagram users with phony offers to verify their accounts in order to receive Instagram’s blue checkmark, Threatpost reports. Researchers at Sucuri came across a ...

New Malware Pretends to Be You by Matching Your Keystroke Characteristics

Jul 1, 2019 8:32:33 AM By Stu Sjouwerman

Cybersecurity researchers have developed a new keystroke impersonation attack that avoids being detected by keystroke-based biometric security solutions.

Microsoft Kills Password Expiration Policy Recommendation with Latest Security Baseline for Windows 10

Jul 1, 2019 8:28:52 AM By Stu Sjouwerman

This change from Microsoft highlights the need for organizations to readdress the user-based insecurity of passwords caused by password expirations.

KnowBe4 Fresh Content and Feature Updates - June 2019

Jun 28, 2019 10:24:07 AM By Stu Sjouwerman

Check out the content and feature updates in the KnowBe4 platform for the month of June!

Which Of The Four Types of Social Engineering Is The Most Damaging?

Jun 27, 2019 11:38:43 AM By Stu Sjouwerman

Cybercriminals know that targeted social engineering attacks lead to the highest payoffs, so the frequency and sophistication of these attacks is guaranteed to increase, writes Jasmine ...

1.5 Billion Gmail Calendar Users are the Target of a Crafty New Phishing Scam

Jun 26, 2019 2:34:43 PM By Stu Sjouwerman

Users of Google’s Calendar app are being warned about a scam that takes advantage of the popularity of the free service and its ability to schedule meetings easily.

No, Mr. McAfee is Not Giving Away Money

Jun 25, 2019 7:07:42 AM By Stu Sjouwerman

Cryptocurrency giveaway scams are making a comeback, with fraudsters posing as John McAfee, Elon Musk, and the Tesla company, BleepingComputer reports.

Chinese Hackers Infiltrate Global Telecom Networks With Spear Phishing

Jun 25, 2019 6:59:27 AM By Stu Sjouwerman

The WSJ revealed a brazen hack by Chinese state-sponsored bad actors who totally owned more than 10 global telecom networks, and had full admin access to their networks. They were able to ...

"Elaborate" Identity Takeover Fraud Hits Australian Businesses

Jun 24, 2019 3:08:02 PM By Stu Sjouwerman

A new procurement scam has netted at least $1.5 million from Australian companies in New South Wales over the past few weeks, according to 10 daily. The scammers are posing as ...

[NEW FEATURE] KnowBe4 User Event API Helps You Tailor Security Awareness Training Based on Custom User Risk Events

Jun 24, 2019 10:14:37 AM By Stu Sjouwerman

You already know the importance of frequent year-round simulated phishing attacks and security awareness training for your users to help you build a more resilient and secure ...

CyberheistNews Vol 9 #26 [Heads-up] The U.S. Launched A Cyber Attack On Iran, And We're Expecting Spear Phishing Strike Backs

Jun 24, 2019 9:47:30 AM By Stu Sjouwerman

CyberheistNews Vol 9 #26 [Heads-up] The U.S. Launched A Cyber Attack On Iran, And We're Expecting Spear Phishing Strike Backs The tension in the Middle-East apparently prompted a ...

Security Awareness Training Blog

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Stu Sjouwerman

Books

Recent Posts

Cyber Crime Refines Their Social Engineering Tactics

Enter Facebook's Libra, with Scammers in its Train

Dridex Credential Stealer Returns With New Antivirus Evasion - Including Application Whitelisting

CyberheistNews Vol 9 #28 1.5 Billion Gmail Calendar Users Are the Target of a Crafty New Phishing Scam

Brand-New Tool: Social Media Phishing Test Checks for Users Vulnerable to Social Media Related Attacks

Instagram Vanity Makes for Vulnerability

New Malware Pretends to Be You by Matching Your Keystroke Characteristics

Microsoft Kills Password Expiration Policy Recommendation with Latest Security Baseline for Windows 10

KnowBe4 Fresh Content and Feature Updates - June 2019

Which Of The Four Types of Social Engineering Is The Most Damaging?

1.5 Billion Gmail Calendar Users are the Target of a Crafty New Phishing Scam

No, Mr. McAfee is Not Giving Away Money

Chinese Hackers Infiltrate Global Telecom Networks With Spear Phishing

"Elaborate" Identity Takeover Fraud Hits Australian Businesses

[NEW FEATURE] KnowBe4 User Event API Helps You Tailor Security Awareness Training Based on Custom User Risk Events

CyberheistNews Vol 9 #26 [Heads-up] The U.S. Launched A Cyber Attack On Iran, And We're Expecting Spear Phishing Strike Backs

Phishing Attacks Go Mobile as Cybercriminals Leverage Push Notifications

[Heads-up] The U.S. Launched A Cyber Attack On Iran, And We're Expecting Spear Phishing Strike Backs

UK Forensic Crime Labs Shut Down Due To Ransomware Attack

FBI Alert: Last Week Conflict With Iran Can Cause Spear Phishing Retaliation

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