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

92% of Organizations Have Experienced a Security Incident as a Result of an Email-Borne Threat

Aug 11, 2022 9:29:08 AM By Stu Sjouwerman

New data shows that not only are email-borne threats increasing, but that current integrated cloud email security solutions do little to detect and stop advanced email-based threats.

New Paypal Phishing Scam Uses “Legitimate” Invoices to Reach Victim Inboxes

Aug 11, 2022 9:29:02 AM By Stu Sjouwerman

Newer phishing scams are looking for ways to make legitimate websites do the work of delivering malicious messages to unsuspecting victims – this new scam achieves it perfectly.

SolidBit Ransomware Targets League of Legends Players

Aug 11, 2022 9:28:56 AM By Stu Sjouwerman

Researchers at Trend Micro warn that a SolidBit ransomware variant is being distributed via fraudulent software targeting video game players and social media users. The malware is being ...

Recent Cisco Hack by Ransomware Group Started Because of a Phishing Attack

Aug 11, 2022 8:59:06 AM By Stu Sjouwerman

In a recent article by Forbes, Cisco confirmed that they were hacked by a ransomware group as the group of cybercriminals published a partial list of files that were claimed to be ...

The Top 8 Most Common Types of DNS Records

Aug 10, 2022 9:46:07 AM By Stu Sjouwerman

This article is a good technical overview of DNS that can help you prevent spoofing. This is a cross-post from the EasyDMARC blog, a new KnowBe4 Ventures portfolio company.

DPRK Operators Impersonate CoinBase

Aug 10, 2022 8:44:55 AM By Stu Sjouwerman

North Korea’s Lazarus Group is running a new phishing campaign targeting Coinbase accounts, BleepingComputer reports. The threat actors are posing as Coinbase and targeting people with ...

New Phishing Campaign is Now Targeting Coinbase Users

Aug 9, 2022 2:31:06 PM By Stu Sjouwerman

If you're a Coinbase user, you are most likely the next target of a new phishing campaign. Cybercriminals have managed to infiltrate two-factor authentication and deploying other social ...

Hacking the Hacker: Assessing and Addressing Your Organization’s Cyber Defense Weaknesses

Aug 9, 2022 11:07:28 AM By Stu Sjouwerman

Cybercriminals are out there, watching and waiting for the perfect opportunity. They are gathering information about your organization and users, devising the perfect plan to infiltrate ...

Cash App Scams Strikes Again With New Types of Attacks

Aug 9, 2022 9:31:42 AM By Stu Sjouwerman

TradeArabia has published a report about common scams on CashApp, explaining that scammers frequently take advantage of CashApp promotions, like the weekly money giveaway, “Super Cash App ...

CyberheistNews Vol 12 #32 [Heads Up] Watch Out For This Widespread, Multistage Investment Scam

Aug 9, 2022 9:27:25 AM By Stu Sjouwerman

New Research Shows Social Engineering and Phishing are the Top Threats

Aug 9, 2022 8:56:10 AM By Stu Sjouwerman

According to the CS Hub Mid-Year Market Report 2022, new findings shows that 75% of survey respondents believe that social engineering and phishing attacks are the top threat vector to ...

Twilio hacked by phishing campaign targeting internet companies

Aug 8, 2022 3:38:47 PM By Stu Sjouwerman

Communications giant Twilio has confirmed hackers accessed customer data after successfully tricking employees into handing over their corporate login credentials.

WSJ: "Cyber Insurance Prices Soar"

Aug 8, 2022 1:51:46 PM By Stu Sjouwerman

The WSJ reported Aug 8, 2020: It is becoming more expensive and difficult for companies to get or renew cyber insurance. The price of U.S. cyber insurance policies increased by 79% from a ...

Cybercriminals Go to College with New Phishing Attacks

Aug 8, 2022 9:23:42 AM By Stu Sjouwerman

The summer is winding up, and the traditional academic year is approaching. And amid the welcomes from the deans of students, the activities coordinators, the academic advisors and so on, ...

LinkedIn Continues its Reign as the Most-Impersonated Brand in Phishing Attacks

Aug 4, 2022 1:09:44 PM By Stu Sjouwerman

As cybercriminals look for novel and effective ways to gain entrance to a victim network, LinkedIn is proving to be fruitful enough to keep the attention of phishing scammers.

Ransomware Attack Downtime Costs in the U.S. Rise to Nearly $160 Billion

Aug 4, 2022 1:09:40 PM By Stu Sjouwerman

New data based on tracked, publicly-confirmed ransomware attacks shows that downtime – and the associated cost – is increasing at an alarming rate as nearly half of attacks see a ransom ...

Open Redirects Exploited for Phishing

Aug 4, 2022 11:21:34 AM By Stu Sjouwerman

Attackers are exploiting open redirects to distribute links to credential-harvesting sites, according to Roger Kay at INKY. The attackers are exploiting vulnerable American Express and ...

KnowBe4 Wins Multiple Summer 2022 "Best of" Awards From TrustRadius

Aug 4, 2022 7:30:00 AM By Stu Sjouwerman

KnowBe4 is proud to be recognized by TrustRadius with the Summer Best of Awards in three categories for the Security Awareness Training software category.

On-Demand Webinar: New 2022 Phishing By Industry Benchmarking Report: How Does Your Organization Measure Up

Aug 3, 2022 11:28:49 AM By Stu Sjouwerman

As a security leader, you have a lot on your plate. Even as you increase your budget for sophisticated security software, your exposure to cybercrime keeps going up. IT security seems to ...

Labor Market Social Engineering: Supply-Side and Demand-Side

Aug 3, 2022 8:50:05 AM By Stu Sjouwerman

We’re accustomed to social engineering being used for credential theft and business email compromise. We’re also accustomed to hearing about the increase in remote work during the ...

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