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

The Clop #Ransomware gang is now pressuring customers of victims threatening that their personal, confidential data will be exposed unless a ransom is paid

Apr 7, 2021 8:29:14 AM By Stu Sjouwerman

Brian Krebs just reported: "Some of the top ransomware gangs are deploying a new pressure tactic to push more victim organizations into paying an extortion demand: Emailing the victim’s ...

The Growing WeTransfer Phishing Campaign Can Put Your Users at Risk

Apr 7, 2021 8:28:36 AM By Stu Sjouwerman

Researchers at Avanan have observed a phishing campaign that’s impersonating the WeTransfer file-sharing app in an attempt to steal users’ credentials. The email’s subject line states, ...

[HEADS UP] New Phishing Attack With .TXT Attachment Can Steal All Your Secrets

Apr 6, 2021 10:28:13 AM By Stu Sjouwerman

The 360 security blog just came up with an eye opener. Recently, 360 Security Center’s threat monitoring platform has detected a new email phishing attack. This attack uses a ...

CyberheistNews Vol 11 #14 [Heads Up] Phishing Remains the Most Common Form of Attack

Apr 6, 2021 9:42:24 AM By Stu Sjouwerman

[Security Culture Report 2021] A Global Security Culture Perspective During a Pandemic

Apr 6, 2021 9:35:21 AM By Stu Sjouwerman

The 2021 KnowBe4 Security Culture Report is the largest study of its kind, measuring organizations' security cultures and surveying more than 320,000 employees across 1,872 organizations ...

UK Users Should Be Aware of Census-Themed Phishing Attacks

Apr 6, 2021 8:20:03 AM By Stu Sjouwerman

Users in the UK should be on the lookout for census-themed phishing attacks, according to Paul Ducklin at Naked Security. Participating in the census is mandatory in the UK, and people ...

[HEADS UP] Millions of Facebook Users' Personal Information Has Been Leaked Online

Apr 5, 2021 9:18:20 AM By Stu Sjouwerman

A hacking forum recently published over 553 million personal data of Facebook users. The type of exposed data ranged from phone numbers, Facebook ID's, full names, locations, birthdates, ...

Expect More Travel-Related Phishing as the Pandemic Subsides

Apr 5, 2021 8:36:08 AM By Stu Sjouwerman

People need to be wary of travel-related phishing as the pandemic draws to a close, according to Fleming Shi, Chief Technology Officer at Barracuda Networks. On the CyberWire’s Hacking ...

Office 365 Phishing Kits Are Being Used in a New Attack Targeting Execs and Finance

Apr 2, 2021 10:09:14 AM By Stu Sjouwerman

A new highly-targeted phishing campaign is seeking to compromise the online credentials of those with influence within an organization using an Office 365-themed update attack.

Encryption, Exfiltration, and Extortion are the Name of the Game as PSYA Ransomware Attacks on Education Organizations Increase

Apr 2, 2021 10:09:11 AM By Stu Sjouwerman

A new warning from the FBI highlights an aggressive campaign of ransomware attacks targeting higher education, K-12 schools, and seminaries, providing specific attack details.

FBI Warns of “Almost Certain” Deepfake Attacks Over the Next 12-18 Months

Apr 2, 2021 10:09:08 AM By Stu Sjouwerman

A recent notification from the FBI warns cybersecurity professionals to be on the lookout for deepfake content that will be used for cyberattacks and foreign influence campaigns.

KnowBe4 Fresh Content Updates from March: Including New Optional Learning Feature for Your Users

Apr 2, 2021 8:00:00 AM By Stu Sjouwerman

Here are important fresh content updates and new features to share with you that happened in the month of March.

Cybercrime Skyrocketed in the US by 55%

Apr 1, 2021 8:58:39 AM By Stu Sjouwerman

According to data released by StockApps, the annual loss from any type of cybercrime in the US reached $4.2 billion in 2020. This turns into billions of dollars lost, and a 55% increase ...

IRS Warns of Phishing for Dot EDU Email Users

Apr 1, 2021 8:43:52 AM By Stu Sjouwerman

The Internal Revenue Service (IRS) has issued an alert warning about a phishing scam targeting university students. A link in the emails leads to a phishing site that asks users to enter ...

FBI's Newly Release Internet Crime Report Shows Cybercrime has Ramped Up in 2020

Mar 31, 2021 4:17:38 PM By Stu Sjouwerman

The FBI's Internet Crime Complaint Center (IC3) released their annual report, and the number of complaints have skyrocketed in 2020.

Recent Phishing Scams that Managed to Bypass Email Security Filters

Mar 31, 2021 9:47:38 AM By Stu Sjouwerman

Researchers at Armorblox describe several recent phishing scams that managed to bypass email security filters. The first attempted to gain access to users’ Facebook accounts.

UK Report Warns of Ransomware Being the 'Perfect Storm'

Mar 31, 2021 8:56:47 AM By Stu Sjouwerman

According to the recent report by the Royal United Services Institute (RUSI) , they are sending a warning to organisations in the UK that ransomware is becoming more and more costly to ...

Ubiquiti Cyber Attack Details Depict a Far More Disastrous Scenario Than Let On

Mar 30, 2021 3:49:36 PM By Stu Sjouwerman

New whistleblower details surrounding the December 2020 attack on the cloud-enabled IoT device manufacturer paints a far worse picture than what was disclosed.

What Is The Reason That Older Users Often Have Problems Using Technology?

Mar 30, 2021 10:34:38 AM By Stu Sjouwerman

Elderly people often struggle with technology because the products aren’t designed with them in mind, according to Ming Yang, founder and CEO of Orchard. On the CyberWire’s Hacking Humans ...

CyberheistNews Vol 11 #13 [EYE OPENER] Mom Charged in Deepfake Cheerleading Plot

Mar 30, 2021 9:48:51 AM By Stu Sjouwerman

Security Awareness Training Blog

View Topics