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

New Email Attack Takes a Phishing-Turned-Vishing Angle to Steal Credit Card Info

May 28, 2021 9:56:51 AM By Stu Sjouwerman

Details on this new scam demonstrate how cybercriminal gangs are working to try use new mediums and social engineering methods to trick users into becoming victims.

Get Prepared Now: New Executive Order Signals Cyber Regulations in the Future

May 28, 2021 9:54:51 AM By Stu Sjouwerman

The White House’s latest Executive Order on Improving the Nation’s Cybersecurity provides insight into what organizations should expect in the future and what they need to do today.

Business Email Compromise Attacks Are Evolving, Becoming More Convincing and More Expensive

May 28, 2021 9:51:22 AM By Stu Sjouwerman

The “business” of BEC is becoming increasingly more lucrative for cybercriminals, as they develop new ways to defraud individuals and organizations of their money.

New Would-Be Ransomware Attack Only Focuses on Stealing Data via the Java-Based STRAAT Malware

May 28, 2021 9:49:51 AM By Stu Sjouwerman

New details from Microsoft Security Intelligence discuss an attack that displays ransomware-like behavior, but simply seeks to install the credential theft-focused remote access trojan.

Call Centers Used to Distribute BazarLoader

May 27, 2021 9:21:37 AM By Stu Sjouwerman

Cybercriminals are using call centers to trick users into downloading the BazarLoader malware, according to researchers at Palo Alto Networks’ Unit 42. By relying on social engineering to ...

A Popular Fraud Combo is Back: Elon Musk and Bitcoin

May 26, 2021 1:56:37 PM By Stu Sjouwerman

Researchers at Bitdefender warn that cybercriminals continue to impersonate Elon Musk in Bitcoin scams. One campaign that started on May 15 involved sending thousands of emails telling ...

CyberheistNews Vol 11 #20 [Heads Up] Advanced Persistent Threat Uses New Spoofed Domains in Social Engineering Attacks

May 25, 2021 9:49:09 AM By Stu Sjouwerman

UK Royal Mail Smishing Crew Nabbed By City Of London Police

May 24, 2021 3:34:30 PM By Stu Sjouwerman

According to a report by ZDNet, there were arrests made due to suspicions of sending 'smishing' texts. Smishing is a form of phishing that sends SMS messages in order to steal personal ...

[On-Demand Webinar] Setting the Trap: Crafty Ways the Bad Guys Trick Your Users to Own Your Network Featuring Kevin Mitnick

May 24, 2021 9:52:40 AM By Stu Sjouwerman

The bad guys are out there, watching and waiting for an opportunity to strike. They have carefully researched your organization in order to set the perfect trap. And the perfect ...

Low-Grade Ways of Bypassing Email Scanners

May 24, 2021 9:38:59 AM By Stu Sjouwerman

Cybercriminals are replacing common words in phishing scams with synonyms in order to bypass security filters, according to researchers at Avanan. For example, one phishing lure contained ...

Ransomware-as-a-Service is Organizing, Becoming More Devastating and Costly

May 21, 2021 1:11:36 PM By Stu Sjouwerman

Take a look at the complex relationships that exist today between the ransomware gangs and the various services they utilize, and you quickly realize this is a very organized and ...

The FBI’s Internet Crime Complaint Center Marks Its 6 Millionth Complaint as Pace Accelerates

May 21, 2021 1:11:14 PM By Stu Sjouwerman

The rate at which cyberattacks are increasing are being noticed by both their victims and the FBI, who are seeing more people affected by online crimes and scams.

Credential Stuffing the Financial Services Sector

May 21, 2021 8:54:50 AM By Stu Sjouwerman

Credential stuffing in the financial services industry has risen significantly over the past year, according to Akamai’s latest State of the Internet / Security report. Credential ...

When Cryptocurrency Investments Really Are Too Good To Be True

May 19, 2021 2:49:41 PM By Stu Sjouwerman

The US Federal Trade Commission (FTC) reports that victims have lost more than $80 million in cryptocurrency scams since October of last year, with about $2 million of that total going to ...

Transparent Tribe Uses Spoofed Domains in Social Engineering Attacks

May 18, 2021 10:29:59 AM By Stu Sjouwerman

Researchers at Cisco Talos warn that the threat actor known as “Transparent Tribe” (also known as APT36 and Mythic Leopard) is using spoofed websites and malicious documents to deliver ...

CyberheistNews Vol 11 #19 [Heads Up] Phishing Scammers Can Now Remove the ‘External Sender’ Email Warnings

May 18, 2021 9:30:22 AM By Stu Sjouwerman

[NEW PhishER Feature] Flip the Script on Phishing Emails with PhishFlip

May 18, 2021 8:15:00 AM By Stu Sjouwerman

We are excited to announce the availability of PhishFlip™ as part of the PhishER product to all PhishER customers.

Ransoms Increase 43% as More Ransomware Attacks Include the Threat to Leak Exfiltrated Data

May 17, 2021 12:42:06 PM By Stu Sjouwerman

With average payments rising to over $220K, organizations scramble to stop ransomware attacks as gangs begin taking more advantage of software vulnerabilities as their attack vector.

Healthcare Organizations Should Expect Cyber Insurance Premiums to Increase 25 to 50% This Year

May 17, 2021 10:45:36 AM By Stu Sjouwerman

In light of recent upticks in payouts – particularly around ransomware – cyber insurers are better understanding the risk and are adjusting rates accordingly.

Kicking You While You’re Down: Ransomware Attacks Begin to Adopt a “Triple Extortion” Model

May 14, 2021 9:11:24 AM By Stu Sjouwerman

New tactics spotted by security researchers at CheckPoint indicate a growing pattern by ransomware gangs to use additional extortion actions to increase revenues and ensure payment.

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