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

2015 Crystal Ball / Three Scams To Warn Your Users About

Dec 30, 2014 9:23:00 AM By Stu Sjouwerman

CyberheistNews Vol 4 #51 Dec 30, 2014 2015 Crystal Ball / Three Scams To Warn Your Users About During my 15-year stint as the editor of WServerNews, I always started the year with a ...

Three Scams To Warn Your Users About

Dec 29, 2014 9:54:00 AM By Stu Sjouwerman

It's the holidays and the bad guys are working overtime. There are three scams you want to warn your users about. Remember the Phil Esterhaus character in Hill Street Blues? To begin ...

Security Awareness Training in 2015

Dec 25, 2014 10:45:53 AM By Stu Sjouwerman

Lance Spitzner at the SANS Securing The Human program and I have a lot in common; we evangelize effective security awareness training and we both drive a Tesla. In his 22 December 2014 ...

Cybercrime group steals millions from Russian banks and targets US

Dec 25, 2014 9:26:00 AM By Stu Sjouwerman

This is actually quite interesting, hackers that are successful inside Russia, as normally these guys are shut down by the FSB in a heartbeat. It must be that they are outside of the ...

Nine Data Breaches That Cost Someone Their Job

Dec 25, 2014 8:44:43 AM By Stu Sjouwerman

Following last year’s big announcement of not just Target’s data breach but executive job loss, CSO lays out 9 data breaches resulting in job loss. They compare Target alongside other ...

Sony Pictures Cyber Attack TIMELINE

Dec 24, 2014 12:07:39 PM By Stu Sjouwerman

This Sony Pictures Cyber Attack TIMELINE by the www.databreachtoday.com site is quite interesting.

Announcing InfoSec World 2015

Dec 23, 2014 5:42:00 PM By Stu Sjouwerman

MIS Training Institute (MISTI) and their esteemed Advisory Board are excited to present the InfoSec World 2015 Conference & Expo. KnowBe4's CyberheistNews is a Media Sponsor for the ...

Phishing Attack on German Steel Factory System Caused Massive Damage

Dec 23, 2014 3:06:00 PM By Stu Sjouwerman

Hackers breached security of a German steel mill's network and caused considerable damage by manipulating the controls of a blast furnace. The attackers gained access to the network ...

CyberheistNews Vol 4 #49 Dec 23, 2014

Dec 23, 2014 9:18:00 AM By Stu Sjouwerman

Lessons Learned From The Sony Pictures Hack Bruce Schneier reminded me of an old but very relevant concept in IT Security. There are two types of attacks: opportunistic and targeted. And ...

Scam of The Week: LinkedIn Greeting Cards Carrying Malware

Dec 22, 2014 4:37:00 PM By Stu Sjouwerman

System admins hold the keys to the kingdom. The NSA is actively hunting for system admin credentials. A popular way to get you to click on something that installs zero-day malware on your ...

Malware Used To Wipe Sony's Drives Was Quick And Dirty

Dec 22, 2014 9:44:20 AM By Stu Sjouwerman

It's still not clear (and it may never be discovered) how the Democratic People's Republic of (North) Korea (DPRK) hackers came in, perhaps they used all available threat vectors since ...

Staples: 6-Month Malware Breach, 1.16 Million Cards

Dec 20, 2014 11:36:00 AM By Stu Sjouwerman

Office supply chain Staples Inc. today finally acknowledged that a malware intrusion by hackers this year at some of its stores resulted in a credit card breach. The company now says some ...

Lessons Learned From The Sony Pictures Hack

Dec 20, 2014 10:37:00 AM By Stu Sjouwerman

Bruce Schneier reminded me of an old but very relevant concept in IT Security. There are two types of attacks: opportunistic and targeted. And then you can characterize attackers on two ...

Malicious links: Spammers change malware delivery tactics

Dec 18, 2014 5:58:56 PM By Stu Sjouwerman

Symantec just put this out and I thought you might be interested. They are seeing a lot of hackers using Upatre and Ponik malware over the last couple of months, delivered by spam email ...

I simply could not resist this vanity plate

Dec 18, 2014 5:34:05 PM By Stu Sjouwerman

Hackers Spear-phish ICANN And Compromise DNS Zone System

Dec 18, 2014 3:58:00 AM By Stu Sjouwerman

It does not get any worse than this. Or better than this, if you are a criminal hacker. Domain-name management organization ICANN announced it has been hacked and its DNS zone ...

[InfoGraphic] The Most Used InfoSec Words In 2014

Dec 17, 2014 9:32:23 AM By Stu Sjouwerman

We took almost 25,000 Hackbusters #infosec articles from 100+ feeds in 2014 and tabulated the hot topics. This "word-cloud" infographic is the result! What's Really The #1 Hot InfoSec ...

New Ransomware called KEYHolder from CryptorBit Cybergang

Dec 16, 2014 3:04:08 PM By Stu Sjouwerman

Bleeping Computer had the scoop again: " A new ransomware has been released called KEYHolder that is from the same developers of CryptorBit . Like CryptorBit, this infection encrypts your ...

CyberheistNews Vol 4 #48 Spike In Hoax News Spreading Malware

Dec 15, 2014 4:46:00 PM By Stu Sjouwerman

CyberheistNews Vol 4 #48 Dec 16, 2014

Breaking News 2 New Ransomware Strains

Dec 15, 2014 9:31:00 AM By Stu Sjouwerman

#1 OphionLocker The first one is a new strain of ransomware named OphionLocker. It encrypts your data using strong open source Crypto++ Elliptical Curve Cryptography and then ransoms the ...

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