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

Why your brain shuts down when you see a security alert

Mar 21, 2015 9:28:56 AM By Stu Sjouwerman

Been mystified why end-users do not seem to get it? Their eyes glazing over when a security alert pops up on their screen? Brand new neuroscience research using MRI shows a dramatic drop ...

China Finally Admits It Has A Hacker Army

Mar 20, 2015 2:45:00 PM By Stu Sjouwerman

China finally admits it has special cyber warfare units — and a lot of them. This is the "advanced persistent threat" cyber security experts have been pointing to.

Despite Mobile App Risks Enterprise Does Not Have Mobile Security Policy

Mar 20, 2015 1:43:33 PM By Stu Sjouwerman

Here is the disconnect: 82 percent of IT pros think that BYOD in the workplace has “very significantly” or “significantly” increased IT security risks, less than half of organizations ...

Banking Regulator Issues New Phishing Alert

Mar 19, 2015 5:21:00 PM By Stu Sjouwerman

The National Credit Union Administration, (NCUA) warns netizens about phishing emails containing links to a fraudulent website that resembles the NCUA are being pushed to consumers.

Security experts say law firms are perfect targets for hackers

Mar 19, 2015 4:38:30 PM By Stu Sjouwerman

Susan Hansen at Bloomberg business reported that cyber attacks upend the attorney-client privilege.

Ransomware: Pay Up Or Fight. What Would You Do?

Mar 17, 2015 5:23:22 PM By Stu Sjouwerman

Ask security experts what to do when hit with ransomware -- the sophisticated malware that infects a device or network, uses military-grade encryption to restrict access, and demands ...

CyberheistNews Vol 5 #11 Ransomware: Pay Up Or Fight. What Would You Do?

Mar 17, 2015 9:26:00 AM By Stu Sjouwerman

Ransomware: Pay Up Or Fight. What Would You Do? Ask security experts what to do when hit with ransomware -- the sophisticated malware that infects a device or network, uses military-grade ...

Report: 71 percent successfully spear-phished in 2014

Mar 14, 2015 5:00:00 PM By Stu Sjouwerman

Adam Greenberg at SC Magazine reported on something interesting:

Spear Phishing Attack Nearly Costs FL City $500K

Mar 12, 2015 2:12:00 PM By Stu Sjouwerman

A spear-phishing last month at Orange Park City Hall almost got away with $500,000 from the city's bank account. Fortunately it was caught in time so that a wire transfer that already had ...

Scam Of The Week: Phishing For Apple Watch

Mar 11, 2015 10:15:00 AM By Stu Sjouwerman

This week, Apple had their big Apple Watch release event, and the press is full of news about the models and pricing. Pundits are sprinkling their predictions about features and future ...

CEO Fraud Social Engineering Scam On The Rise

Mar 10, 2015 10:40:30 AM By Stu Sjouwerman

Known variously as the “CEO fraud,” or the “business email compromise,” highly sophisticated cyber criminals try to social engineer businesses that work with foreign suppliers. This ...

CyberheistNews Vol 5 #10 New CryptoWall Attack Wave Using Help Files / Scam Of The Week

Mar 10, 2015 8:54:00 AM By Stu Sjouwerman

New CryptoWall Attack Wave Using Help Files / Scam Of The Week A new CryptoWall attack wave has hit end-users with malicious .chm attachments that infect networks with the latest and most ...

New Ransomware CryptoFortress Encrypts Unmapped Network Shares

Mar 7, 2015 11:32:00 AM By Stu Sjouwerman

Used to be that ransomware only looked at hard drive C:, and then any other mapped drives like D:, E:, F: etc., but now a whole new malicious strain that has stolen the same look & ...

New CryptoWall Attack Uses Malicious Help File Attachments

Mar 6, 2015 2:42:00 PM By Stu Sjouwerman

A new CryptoWall attack wave has hit end-users with phishing emails containing malicious .chm attachments that infect networks with the latest and most sophisticated file-encrypting ...

Anatomy of a ransomware attack [Infographic]

Mar 4, 2015 11:21:03 AM By Stu Sjouwerman

How does ransomware actually work? Ransomware attacks cause downtime, data loss, possible intellectual property theft, and in certain industries a ransomware attack is considered a data ...

Hospital Sues Bank of America Over Million-Dollar Cyberheist

Mar 3, 2015 10:40:54 AM By Stu Sjouwerman

CyberheistNews Vol 5 #9 Mar 3, 2015 How To Get The OK To Phish Your Own Employees

Mar 3, 2015 9:44:00 AM By Stu Sjouwerman

CyberheistNews Vol 5 #9 Mar 3, 2015 How To Get The OK To Phish Your Own Employees IT people responsible for network security talk to us all the time. Almost all of them agree that ...

Russia tops list of nation-state cyber threats against U.S.

Mar 1, 2015 4:00:32 PM By Stu Sjouwerman

I have been talking about cyber war / cyber threats from Russia on this blog for about two years now, and it looks like I was on the mark.

How To Get The OK To Phish Your Own Employees

Feb 28, 2015 2:34:00 PM By Stu Sjouwerman

IT people responsible for network security talk to us all the time. Almost all of them agree that end-users are their number one headache and managing that problem continues to be a big ...

Number One Infosec Headache Is End Users

Feb 25, 2015 11:56:11 AM By Stu Sjouwerman

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