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

Phishing Attacks Top List of Initial Access Vectors with Backdoor Deployment as Top Objective

Mar 17, 2023 2:19:15 PM By Stu Sjouwerman

New data looking back at the cyber attacks observed in 2022 shows that phishing continues to dominate as initial access brokers seem to be growing their business using backdoors.

92% of Organizations Have Fallen Victim to Phishing as Nearly Every Org is Concerned with Email Security

Mar 17, 2023 2:19:05 PM By Stu Sjouwerman

New data shows that not only has just about every organization experienced a successful phishing attack, but that they are also paying the price in a number of impactful ways.

[FREE RESOURCE KIT] New Phishing Security Resource Kit Now Available!

Mar 16, 2023 9:06:29 AM By Stu Sjouwerman

Phishing emails increase in volume every month and every year, so we created this free resource kit to help you defend against attacks. Request your kit now to learn phishing mitigation ...

A 240% Rise in Dynamic Phishing

Mar 16, 2023 8:44:16 AM By Stu Sjouwerman

Attackers are increasingly using techniques to prevent their phishing pages from being detected by security firms, a new report from BlueVoyant has found. The report found that in 2022 ...

Three-Quarters of Organizations Have Experienced an Increase in Email-Based Threats

Mar 15, 2023 1:43:42 PM By Stu Sjouwerman

New data on the state of email security shows that nearly every organization has been the target of a phishing attack as attacks increase in sophistication.

79% of Employee-Reported Phishing Emails Go Completely Undetected by Cybersecurity Solutions

Mar 15, 2023 1:43:39 PM By Stu Sjouwerman

As cybercriminals increasingly turn to malwareless phishing attacks, the ability for security solutions to correctly identify a malicious email is becoming more and more difficult.

University of Sydney Gives Students and Staff Advice on Avoiding Social Engineering Scams

Mar 15, 2023 9:25:51 AM By Stu Sjouwerman

The University of Sydney has issued advice to help students and staff avoid falling for social engineering attacks.

Season 5 of ‘The Inside Man’ From KnowBe4 Is Less Than a Month Away!

Mar 15, 2023 8:00:00 AM By Stu Sjouwerman

We’re thrilled to announce that Season 5 of the award-winning Knowbe4 Original Series - “The Inside Man” is less than a month away!

Newest FBI Report Shows $10B in Losses Last Year Due to Internet Scams

Mar 14, 2023 2:15:30 PM By Stu Sjouwerman

The 2022 Internet Crime Report by the FBI reported at least $10.3 billion in losses due to internet scams last year.

CyberheistNews Vol 13 #11 [Heads Up] Employees Are Feeding Sensitive Biz Data to ChatGPT, Raising Security Fears

Mar 14, 2023 9:00:00 AM By Stu Sjouwerman

CyberheistNews Vol 13 #11 | March 14th, 2023 [Heads Up] Employees Are Feeding Sensitive Biz Data to ChatGPT, Raising Security Fears Robert Lemos at DARKReading just reported on a worrying ...

Threat Actors are Using FINRA Impersonation For Their Attacks

Mar 13, 2023 1:13:47 PM By Stu Sjouwerman

DomainTools warns that a sophisticated West Africa-based fraud group is impersonating the Financial Industry Regulatory Authority (FINRA) to target users in the United States, according ...

Microsoft Warns of Business Email Compromise Attacks Taking Hours

Mar 13, 2023 1:13:45 PM By Stu Sjouwerman

According to Microsoft's Security Intelligence team, a recent business email compromise attack (BEC) has shown that threat actors are quickening the pace of these attacks, with certain ...

[Heads Up] The SVB Bankruptcy Is A Social Engineering Bonanza

Mar 12, 2023 7:53:43 AM By Stu Sjouwerman

Saturday March 11, 2023 -- Over the last 24 hours, the Federal Deposit Insurance Corporation has established the FDIC Bank of Santa Clara and insured depositors will have access to funds ...

The interesting history and origin of the word "Bankruptcy"

Mar 11, 2023 10:18:05 AM By Stu Sjouwerman

Regarding the current SVB meltdown, the English word "bankruptcy" has its roots in medieval Italy. It comes from the word "banca rotta," which means "broken bench." This term was used ...

One-Quarter of Users Fall for Online Scams Despite an Overconfidence in an Ability to Spot Them

Mar 10, 2023 9:46:46 AM By Stu Sjouwerman

A new survey of individuals across seven countries shows that users may have had luck on their side, as a majority aren’t sure about their device security or how to spot malicious sites ...

Google: Analysis of Cyberattacks Targeting Ukraine Shed Light on What a Cyberwar Strategy Looks Like

Mar 10, 2023 9:46:29 AM By Stu Sjouwerman

A look back at the last year of attacks on Ukraine by Google’s Threat Analysis Group (TAG) provides insight into attacks on NATO countries to gain a cyberspace advantage.

Use of Malware Decreases in Cyber Attacks as Exploit Usage Skyrockets

Mar 10, 2023 9:46:12 AM By Stu Sjouwerman

New data on cyberattacks from last quarter provides a lens of what kinds of attack techniques to expect to see from cyber attackers this year.

Phishing for Ring Customers

Mar 9, 2023 9:17:15 AM By Stu Sjouwerman

INKY warns that a phishing campaign is targeting users of the Ring video security system. The scammers are sending brief phishing emails instructing recipients to click on the attached ...

Three-Quarters of Vulnerabilities Used in Ransomware Attacks Were Discovered Before 2020

Mar 8, 2023 9:24:07 AM By Stu Sjouwerman

Despite a lot of focus on phishing and remote access as initial access vectors, new data shows the use of vulnerabilities is not only on the rise, but simply isn’t being properly ...

Half of all Sites Used in Phishing Attacks Impersonate Financial Institutions

Mar 8, 2023 9:24:04 AM By Stu Sjouwerman

As credential theft-focused phishing attacks continue to assist initial access brokers, new data shows banking fraud continues to be a material threat to individuals and businesses alike.

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