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 Attack With PowerPoint Attachment Bypasses User Access Control

Sep 4, 2017 7:55:17 AM By Stu Sjouwerman

Fortinet researchers discovered a malicious PowerPoint file which currently is used to attack diplomats, United Nations- and government organizations worldwide. This will soon filter down ...

These 4 Maps Will Make You Understand Russia's Aggressive Cyber Attacks

Sep 3, 2017 1:23:29 PM By Stu Sjouwerman

There are many kinds of maps, they can show roads or general geography, but sometimes they shed light on other dimensions like economic, political and/or military perspectives. First of ...

A Phishing Attack in the Clouds May Rain On Your Parade

Sep 1, 2017 5:02:27 PM By Stu Sjouwerman

According to MeriTalk, an editorial and events organization that focuses on Federal IT and government computing technologies, governments are moving some, or all of their IT to the Cloud, ...

MacEwan University Victim Of $11.8M CEO Fraud

Sep 1, 2017 1:53:43 PM By Stu Sjouwerman

CBC News reported that an Edmonton, Canada university was the victim of a $11.8 million CEO fraud attack after staff failed to call one of its vendors to verify whether emails requesting ...

Vote For KnowBe4 At The 2017 Computing Security Awards!

Sep 1, 2017 1:41:19 PM By Stu Sjouwerman

KnowBe4 made it as Finalist in the 2017 Computing Security Awards, and we'd be eternally grateful if you could vote for us in the category "Education and Training Provider of the Year". ...

Companies Slow to Adopt Insurance As Hedge Against Ransomware Wave

Aug 31, 2017 12:46:48 PM By Stu Sjouwerman

Research firm Ovum for Silicon Valley analytics firm FICO, conducted a May 2017, survey about cyber insurance. And here is the head-scratcher: “The survey further concluded that “a full ...

Introducing Behavioral Information Security

Aug 31, 2017 7:27:54 AM By Stu Sjouwerman

Ben Tomhave posted a great article on his "The Falcon's View" blog. Loved the concept and I'm cross-posting the whole thing in it's entirety without any edits with grateful ...

Nigerian Phishers Have Gone to School and Gotten Their CEO Fraud Diploma

Aug 29, 2017 5:45:48 PM By Stu Sjouwerman

The FBI calls CEO Fraud "Business Email Compromise" (BEC) and it has become a highly lucrative threat vector for attackers. According to IC3, the FBI's Internet Crime Complaint Center, ...

[ALERT] The IRS Issued An Urgent Warning Against An IRS / FBI-Themed Ransomware Phishing Attack

Aug 29, 2017 7:01:20 AM By Stu Sjouwerman

WASHINGTON, August 28, 2017 — The Internal Revenue Service warned people to avoid a new phishing scheme that impersonates the IRS and the FBI as part of a ransomware scam to take computer ...

CyberheistNews Vol 7 #34

Aug 28, 2017 9:20:29 AM By Stu Sjouwerman

Scam Of The Week: Hurricane Harvey Charity Fraud

Aug 27, 2017 12:43:13 PM By Stu Sjouwerman

Hurricane Harvey hit hard and especially Houston, TX got badly flooded. The death toll is rising and you can also count on low-life cyber-scum exploiting this disaster.

New Defray Ransomware Demands $5,000 In Customized Spear Phishing Attacks

Aug 26, 2017 10:42:45 AM By Stu Sjouwerman

This newly discovered ransomware strain is targeting healthcare, education, manufacturing and tech sectors in the US and UK, using customized spear phishing emails. Defray is demanding a ...

The RopeMaker Exploit Can CHANGE An Already Delivered Email

Aug 25, 2017 5:55:44 PM By Stu Sjouwerman

Our friends at Mimecast are warning against something scary! This is a sobering example of why scanners and filters will always be behind in the security arms race... They wrote: "Most ...

Health Care Systems Remain Targets of Ransomware And Phishing Attacks in 2017

Aug 25, 2017 4:41:25 PM By Stu Sjouwerman

Health care networks and providers are squarely in the cross hairs of ransomware cyber criminals and if the current rate of attacks continue it will likely exceed last years' events ...

Microsoft Wakes Up To The Fact That Cyber Security Risk Is A Business Risk [VIDEO]

Aug 24, 2017 4:57:31 PM By Stu Sjouwerman

The 800-pound Redmond Gorilla asks: "Should your security focus be on systems or people?" They wrote: "In the latest Modern Workplace episode, “Cyber Intelligence—The Human Element,” we ...

Enigma Hacked Before ICO Date -- CEO Had Not Changed A Compromised Password

Aug 23, 2017 1:32:16 PM By Stu Sjouwerman

Wherever there’s a lot of money to be made cyber thieves are not far behind. Think sharks surrounding a bait ball. Enigma is a financial data marketplace founded by a team from MIT which ...

Inside The New York Hospital That Was Down For 6 Weeks Due To Ransomware

Aug 22, 2017 10:00:00 AM By Stu Sjouwerman

If you ever needed ammo to convince budget holders that you need more IT security resources, this is the link to send them. It is a great discussion-starter how an attack like this would ...

CyberheistNews Vol 7 #33 New Study: Phishing Is Still the Top Threat Faced by Organizations

Aug 22, 2017 9:43:21 AM By Stu Sjouwerman

[On-Demand Webinar] How To Phish Like the Bad Guys

Aug 21, 2017 2:35:29 PM By Stu Sjouwerman

Despite all the spectacular news stories about advanced persistent threats and targeted hacks from nation-states, the most common security challenge facing enterprises today continues to ...

SyncCrypt Uses Graphic File to Cloak Ransomware in ZIP Phishing Payload

Aug 21, 2017 1:22:54 PM By Stu Sjouwerman

Emisoft Security researcher xXToffeeXx discovered another new phishing threat adept at bypassing Antivirus using a variation of the game played by PowerPoint PPSX attachment phishing ...

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