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

[HEADS UP] Cyber Attack at University of York Steals Personal Information from Staff and Students

Jul 23, 2020 12:50:24 PM By Stu Sjouwerman

In a recent report by the York Press, University of York has launched an investigation after personal information of students and staff was obtained by the bad guys.

Don't Overlook Policy When Designing Security

Jul 23, 2020 8:30:53 AM By Stu Sjouwerman

There’s no single defense against phishing and other social engineering attacks, according to Kevin O’Brien, CEO and co-founder of email security company GreatHorn. On the CyberWire’s ...

Argentinian Telecom Company is the Latest Victim of REvil Ransomware, with 18,000 Endpoints Infected

Jul 23, 2020 7:05:00 AM By Stu Sjouwerman

The ransom in excess of $7.5 Million is only one of many remediation issues Argentina’s largest ISP has to address, with it appearing that the entire network was compromised in the ...

I Testified Before U.S. Congress About COVID-19 Phishing Scams

Jul 22, 2020 8:51:55 PM By Stu Sjouwerman

Yesterday, July 21, 2020 I testified before U.S. congress about COVID-19 phishing scams. I was invited by the Senate Commerce Committee's subcommittee on manufacturing, trade, and ...

KnowBe4 Releases New Training Module: Face Masks At Work: 8 Essential Tips

Jul 22, 2020 1:58:03 PM By Stu Sjouwerman

Our team has been working on building a whole new course library of new compliance topics that will likely release sometime in 2021.

“Service Desk” Phishes in Enterprise Waters

Jul 22, 2020 9:26:52 AM By Stu Sjouwerman

A phishing campaign is impersonating an IT help desk and abusing legitimate cloud services to fool users, according to Ax Sharma at BleepingComputer. The emails are sent from the ...

Brand-New Tool: Browser Password Inspector Helps Find Risky Passwords Your Users Save in the Browser

Jul 22, 2020 7:00:00 AM By Stu Sjouwerman

Cybercriminals are always looking for easy ways to hack into your network and steal your users’ credentials.

CyberheistNews Vol 10 #30 [Heads Up] What Is Consent-Phishing? Microsoft Warns About New App-Based Attack Angle

Jul 21, 2020 9:34:19 AM By Stu Sjouwerman

Emotet Returns Using Familiar Phishing Tactics

Jul 21, 2020 8:29:11 AM By Stu Sjouwerman

Emotet, the venerable commodity banking Trojan, is being actively distributed again, according to researchers at Malwarebytes. Emotet’s botnets began sending out phishing emails on July ...

New “servicedesk.com” Phishing Attack Uses Microsoft, IBM Cloud Services to Add Legitimacy

Jul 20, 2020 11:38:15 AM By Stu Sjouwerman

Focused on stealing victim credentials, this new attack uses a number of tactics to establish credibility, avoid raising red flags, and ensure they get the victim’s real credentials.

Phishing Attack in Finland Uncovers Sophisticated Smishing Scheme

Jul 20, 2020 8:51:32 AM By Stu Sjouwerman

The Helinski Police Department is investigating a sophisticated smishing scheme in which attackers were able to steal more than 200,000 euros (US$228,736), Yle reports. The scammers sent ...

Phorpiex Botnet Attacks Spike So High in June, 2% of All Organizations Were Hit

Jul 17, 2020 11:44:33 AM By Stu Sjouwerman

The rise in the use of this dangerous botnet, notorious for distributing malware via phishing campaigns and responsible for fueling Sextortion scams, should put organizations on edge.

Expect to See Data Theft as Part of More Ransomware Attacks in the Future

Jul 17, 2020 11:40:52 AM By Stu Sjouwerman

With data theft currently experienced in 10% of ransomware attacks, experts predict this trend to increase as cyber criminals look for ways to ensure ransom payment.

Impermissible: Be Suspicious of Permission Requests

Jul 17, 2020 8:26:40 AM By Stu Sjouwerman

Users need to be wary of requests for information or permissions, even if they appear to come from legitimate sources, according to Don MacLennan, Senior Vice President of Engineering and ...

Microsoft Warns of Application-based Phishing

Jul 16, 2020 8:38:51 AM By Stu Sjouwerman

Microsoft has issued an advisory warning about “consent phishing,” or application-based phishing attacks that rely on users granting permissions to malicious apps. These attacks aren’t as ...

[Heads Up] Twitter Employees Fall For Social Engineering Attack And The Bad Guys Get "God Mode"

Jul 16, 2020 8:00:27 AM By Stu Sjouwerman

A number of high-profile Twitter accounts were hacked including those of Elon Musk, Bill Gates, Kanye West, Joe Biden and Barack Obama. This is clearly the worst hacking incident in ...

SEC Issues Warning on Increased Ransomware Attacks

Jul 15, 2020 2:28:04 PM By Stu Sjouwerman

The Securities and Exchange Commission, through its Office of Compliance Inspections and Examinations (OCIE), issued a warning to advisors and broker-dealers to “immediately” review their ...

KnowBe4 Finds Coronavirus-Themed Phishing Spiked in Q2 2020 [INFOGRAPHIC]

Jul 15, 2020 12:35:08 PM By Stu Sjouwerman

The latest results of KnowBe4's quarterly top-clicked phishing email subjects are in. We report on three different categories: social media related subjects, general subjects, and 'in the ...

[ALERT] More Than 10% of Ransomware Attacks Now Involve Data Theft / Data Breach

Jul 15, 2020 11:04:52 AM By Stu Sjouwerman

Research into recent ransomware submissions from TripWire revealed that more than a tenth of crypto-malware infections now involve some element of data theft.

Scammers Impersonate Hospital Personnel

Jul 15, 2020 8:24:41 AM By Stu Sjouwerman

Scammers are seeking to obtain personal information by impersonating Canadian hospital staff over the phone, NEWS 1130 reports. Vancouver Coastal Health issued an alert in which the ...

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