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

KnowBe4 has explosive year over year growth of 358% for Q4 2015

Jan 11, 2016 4:24:28 PM By Stu Sjouwerman

(Tampa Bay, FL) January 11, 2016 --- KnowBe4 announced its explosive year over year growth of 358% for Q4 2015, with a record number of new corporate accounts and a stellar customer ...

CyberheistNews Vol 6 #1 First Javascript-only Ransomware-as-a-Service Discovered

Jan 5, 2016 10:53:14 AM By Stu Sjouwerman

Cybercrime has piggybacked on the extremely successful SaaS model and several strains of Ransomware-as-a-Service (RaaS) like TOX, Fakben and Radamant have appeared in 2015

First Javascript-only Ransomware-as-a-Service Discovered

Jan 5, 2016 9:06:32 AM By Stu Sjouwerman

Cybercrime has piggybacked on the extremely successful SaaS model and several strains of Ransomware-as-a-Service (RaaS) like TOX, Fakben and Radamant have appeared in 2015. However, a new ...

Scam Of The Week: Massive LinkedIn Spam Steals Passwords

Jan 3, 2016 10:42:01 AM By Stu Sjouwerman

"I feel like a complete idiot. I just got taken by a LinkedIn spam that may have just stolen my banking password." These words dropped in my inbox, written a while ago by Dan Tynan, ...

Credit Union Chilling CEO Fraud Story

Jan 1, 2016 11:12:40 AM By Stu Sjouwerman

I received this the last day of the year from a Director of IT Security who works at a mid-size credit union. "Stu, I think you’ll be interested in my story. If you want to share it, just ...

Cyber criminals release hard to recognize social engineering scam.

Jan 1, 2016 10:04:38 AM By Stu Sjouwerman

Jerome Segura, a senior security researcher over at our friends at Malwarebytes reported about a new, in-the-wild tech support scam that has moved from Amazon Web Services to Rackspace's ...

Top 10 Predictions for 2016: Read It, This Is A Good One

Dec 28, 2015 10:29:12 AM By Stu Sjouwerman

At the end of the year I spend a few days reading all the IT security pundit's 2016 predictions and synthesize them with my own perspective. The Crystal Ball issue is the shortest of the ...

KMSAT 2016 has been released

Dec 22, 2015 12:26:46 PM By Stu Sjouwerman

We are excited to announce that the Kevin Mitnick Security Awareness Training 2016 module has been released. If your subscription is current, you will see it in the Training -> ...

CyberheistNews Vol #5 #54 Scam Of The Week: Comcast Triple Threat

Dec 22, 2015 9:28:09 AM By Stu Sjouwerman

You are probably aware that Comcast is the largest home ISP in the U.S. and that they also have many thousands of business users. No wonder they are the target of a sophisticated social ...

Scam Of The Week: Comcast Triple Threat

Dec 19, 2015 9:26:55 AM By Stu Sjouwerman

You are probably aware that Comcast is the largest home ISP in the U.S. and that they also have many thousands of business users. No wonder they are the target of a sophisticated social ...

Major TeslaCrypt Ransomware Offensive Underway

Dec 16, 2015 1:17:59 PM By Stu Sjouwerman

This month, Symantec researchers reported a boost in TeslaCrypt attacks, going from 200 a day to 1,800. TeslaCrypt first appeared in March 2015, and differentiated itself because many of ...

Data Breach Caused By Phishing Results in $750,000 HIPAA Penalty

Dec 16, 2015 11:26:50 AM By Stu Sjouwerman

Federal regulators have hit the University of Washington Medicine with a $750,000 penalty and a corrective action plan as part of a HIPAA settlement after a 2013 malware-related breach ...

CyberheistNews Vol #5 #53 Despite Warnings, CEO Fraud Scams Still Successful And Growing

Dec 15, 2015 9:59:30 AM By Stu Sjouwerman

In the last few months, law enforcement has warned repeatedly about a new scam that is rapidly expanding. The FBI calls it "Business Email Compromise" (BEC), but it is better known as ...

Kaspersky Sees Ransomware Doubling Year Over Year

Dec 14, 2015 4:44:18 PM By Stu Sjouwerman

Antivirus company Kaspersky has been monitoring ransomware pretty much from the get-go. Not surprising, as they are in Moscow and the main ransomware malware developers are Russian as ...

Despite Warnings, CEO Fraud Scams Still Successful And Growing

Dec 13, 2015 10:43:08 AM By Stu Sjouwerman

In the last few months, law enforcement has warned repeatedly about a new scam that is rapidly expanding. The FBI calls it "Business Email Compromise" (BEC), but it is better known as " ...

CyberheistNews Vol #5 #52 Scam Of The Week: Apple ID Suspension Phish With A Twist

Dec 8, 2015 9:45:54 AM By Stu Sjouwerman

OK, this scam is widespread enough to alert your users about it. The email claims to be from Apple Support and says your Apple ID and iCloud are both going to be suspended because you did ...

Scam Of The Week: Apple ID Suspension Phish With A Twist

Dec 5, 2015 3:07:08 PM By Stu Sjouwerman

OK, this scam is widespread enough to alert your users about. The email claims to be from Apple Support and both your Apple ID and iCloud are going to be suspended because you did not ...

The Top 5 Reasons To Invest In Cyber Security

Dec 5, 2015 9:59:21 AM By Stu Sjouwerman

Here's a quick condensed overview, which you can use as bullet points in your 2016 budget discussion. Today, successful data breaches happen on a daily basis. The frequency of the attacks ...

CyberheistNews Vol #5 #51 Hated Cryptowall 4.0 Now Infects Workstations with Powerful Exploit Kit

Dec 1, 2015 9:34:49 AM By Stu Sjouwerman

Earlier than expected - but similar to Cryptowall 3.0 - a few weeks after its release, the hated Cryptowall 4.0 ransomware is now being delivered via the Nuclear Exploit Kit (NEK), ...

Cryptowall 4.0 Delivered via Nuclear Exploit Kit

Nov 27, 2015 10:13:17 AM By Stu Sjouwerman

Earlier than expected - but similar to Cryptowall 3.0 - a few weeks after its release, Cryptowall 4.0 ransomware is now delivered via the Nuclear Exploit Kit, (NEK) according to the ...

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