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

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

CyberheistNews Vol 5 #8 | Two Disgusting Scams Of The Week: Death And Taxes

Feb 24, 2015 9:15:00 AM By Stu Sjouwerman

Scam Of The Week #1: Death In The Family Cybercrime is innovating on a known and disgusting scam; preying on people that have recently suffered a loss. Used to be that old time scam ...

Intel Report About Social Engineering

Feb 23, 2015 4:13:59 PM By Stu Sjouwerman

In a new report, Hacking the Human OS, McAfee (owned by Intel) security researchers Raj Samani and Charles McFarland found that, increasingly, hackers are using social engineering ...

Scam Of The Week: Death In The Family

Feb 21, 2015 10:49:00 AM By Stu Sjouwerman

Cybercrime is innovating on a known and disgusting scam; preying on people that have recently suffered a loss. Used to be that old time scam artists read the obituary notices in the ...

Just Got A Social Engineering Call That The IRS Is Suing Me

Feb 20, 2015 9:49:00 AM By Stu Sjouwerman

This morning, Feb 20, 2015 at 8am at the house I received a robo-call in a female voice that said the following:

More Phishing Attacks Going After Financial Data

Feb 17, 2015 11:27:37 AM By Stu Sjouwerman

Kaspersky recently reported that 28.8 percent of phishing attacks in 2014 tried to steal financial data from consumers. The results show how cybercrime has shifted its focus to payment ...

CyberheistNews Vol 5 #4 Chinese Phish All Identities of NSA, CIA, FBI and more...

Feb 17, 2015 9:29:00 AM By Stu Sjouwerman

Chinese Phish All Identities of NSA, CIA, FBI and more... For a day or so I was puzzled that the Anthem hack trail led to China. This would normally be a Russian operation. Then an ...

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