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

Alert: Stupid And Damaging New Ransomware Called 7ev3n

Jan 28, 2016 2:54:51 PM By Stu Sjouwerman

Larry Abrams had the scoop: "A new ransomware has been spotted called 7ev3n that encrypts your data and demands 13 bitcoins to decrypt your files. A 13 bitcoin [almost $5,000] ransom ...

CyberheistNews Vol 6 #4 Scam Of The Week: Phish With Hidden Sting

Jan 26, 2016 8:52:15 AM By Stu Sjouwerman

As you may have heard, KnowBe4 has released a no-charge Outlook Add-in that allows your employees to report phishing attacks to your Incident Response team with just one click. It's ...

Crelan Bank Loses 75.8 Million Dollars In CEO Fraud

Jan 25, 2016 9:46:24 AM By Stu Sjouwerman

The Belgian Crelan Bank was the victim of a 70 million euro (75.8M U.S.) fraud that was launched from another country. They claim (PDF) this CEO Fraud was discovered during an internal ...

CEO Fraud Costs Boeing Vendor 54 Million Dollars

Jan 24, 2016 9:40:00 AM By Stu Sjouwerman

Effective security awareness training for your high-risk employees is becoming a major priority. The accounting team of FACC, who design and manufacture aircraft components for Boeing and ...

PAYCHEX: 60% Of Hacked SMBs Are Out Of Business 6 Months Later

Jan 23, 2016 11:54:12 AM By Stu Sjouwerman

Paychex wrote a great article about the urgency of creating a cyber security culture in your business. This is excellent ammo to send to your C-level execs: "Creating a cyber security ...

Scam Of The Week: Phish With Hidden Sting

Jan 23, 2016 10:26:16 AM By Stu Sjouwerman

As you may have heard, KnowBe4 has released a no-charge Outlook Add-in that allows employees to report phishing attacks to their Incident Response team with just one click. It's called ...

CyberheistNews Vol 6 #3 Scam Of The Week: Dell Tech Support Service Tag Hack

Jan 19, 2016 9:32:33 AM By Stu Sjouwerman

This is a real one. A number of people using Dell PCs have been contacted by scammers claiming to be Dell Tech Support who actually had specific data that only Dell could have had. We're ...

Files Lost Forever Due To Buggy Ransomware

Jan 18, 2016 1:57:34 PM By Stu Sjouwerman

Researchers discovered a sample of ransomware that damages files permanently. The malicious code is based on the work of Turkish Oktu Sen security researchers, who last year made their ...

Scam Of The Week: Dell Tech Support Service Tag Hack

Jan 16, 2016 10:15:23 AM By Stu Sjouwerman

This is a real one. A number of people using Dell PCs have been contacted by scammers claiming to be Dell Tech Support who actually had specific data that only Dell could have had. We're ...

CyberheistNews Vol 6 #2 Scam Of The Week: Fantasy Football Site Hacked

Jan 11, 2016 4:33:56 PM By Stu Sjouwerman

For this Scam Of The Week, we decided to go out on a limb and run a "What If" scenario" on an attack that we think is very likely.

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