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

Hacking Into Traffic Lights With a Plain Old Laptop Is Scary Simple

Aug 20, 2014 4:32:00 PM By Stu Sjouwerman

Gizmodo reported yesterday about a new study from the University of Michigan on the vulnerabilities of traffic lights which is shocking proof that we need to make some major changes, and ...

Video: SQL Injection Explained In 5 Minutes

Aug 19, 2014 1:08:00 PM By Stu Sjouwerman

I was at Black Hat and left my email address at the Imperva booth. They sent me this and it's a very good little intro: "SQL injection attacks have been around for more than ten years … ...

CyberheistNews Vol 4, # 33 New Ransomware Threat: TorrentLocker

Aug 19, 2014 9:17:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 33

Study: Cyber Attacks hit 36 percent of Canadian businesses

Aug 19, 2014 9:16:00 AM By Stu Sjouwerman

More than one-third of Canada’s IT professionals know – for sure – that they’d had a significant data breach over the previous 12 months that could put their clients or their ...

KnowBe4's Email Exposure Check Discovers Data Breach

Aug 18, 2014 3:57:00 PM By Stu Sjouwerman

You are probably aware of the free one-time Email Exposure Check Pro (EEC Pro) we can run for you. We find all the email addresses of your domain that are out there available on the ...

Phishing: 4.5 million Community Health patients records stolen

Aug 18, 2014 1:44:00 PM By Stu Sjouwerman

n">(Reuters) - Community Health Systems Inc, one of the biggest U.S. hospital groups, said it was the victim of a cyber attack that originated in China, resulting in the theft of ...

NSA's Monstermind Aims To Detect And Stop Cyber Attacks Instantly

Aug 15, 2014 4:08:00 PM By Stu Sjouwerman

WIRED magazine had the scoop, by directly talking to Edward Snowden recently. An NSA program known as MonsterMind, currently under development, is being designed to detect and stop cyber ...

New CryptoLocker copycat: TorrentLocker

Aug 15, 2014 3:55:00 PM By Stu Sjouwerman

iSIGHT partners discovered a new ransomware strain, which uses components of CryptoLocker and CryptoWall but underneath the surface, the code is completely different from these two ...

As Expected: Robin Williams 'Goodbye Video' Facebook Phishing Message

Aug 15, 2014 3:09:00 PM By Stu Sjouwerman

The scammers are at it, as expected. There is now a Facebook phishing message that invites users to click a link and see an "exclusive" video of Robin Williams saying goodbye through his ...

Tenn. Firm Sues Bank Over $327K Cyberheist

Aug 13, 2014 1:28:00 PM By Stu Sjouwerman

Scam Of The Week: See Robin Williams Last Words On Video

Aug 12, 2014 9:23:00 AM By Stu Sjouwerman

Last night, news broke that Robin Williams was found dead in his home in Marin County, CA. It is suspected that it was either a suicide or an overdose. This is a celebrity death that the ...

CyberheistNews Vol 4, 32 Scam: See Robin Williams Last Words On Video

Aug 12, 2014 9:20:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 32

Ransomware: The next 12 months

Aug 11, 2014 2:05:00 PM By Stu Sjouwerman

Since September 2013, ransomware has become vicious and has inspired several copycats. At the time of this writing, summer 2014, the very first strains of second-generation ransomware ...

Security Companies Help Users Recover Files Locked by CryptoLocker

Aug 11, 2014 10:02:00 AM By Stu Sjouwerman

Researchers at FireEye and Fox-IT have managed to obtain the private encryption keys that the malware uses to lock files.

Kevin Mitnick at Black Hat 2014

Aug 9, 2014 11:29:00 AM By Stu Sjouwerman

I was at Black Hat 2014, and Kevin Mitnick was also at at the show. He signed 700 books in a 3-hour span, whew! Here is the line that ran all the way back to the show floor. I took this ...

Scam Of The Week: "For Sale: CyberVor False Sense Of Security"

Aug 9, 2014 10:30:00 AM By Stu Sjouwerman

Are the credentials of one of your users among the stash of the 1.2 billion stolen passwords? A small Internet security company will tell you for just a 120 bucks per year. Their ...

CyberheistNews Vol 4, # 31 Second Generation Ransomware In The Wild

Aug 5, 2014 9:40:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 31

Cryptolocker Ransomware Variant Hits Synology Users: Synolocker

Aug 4, 2014 10:02:00 AM By Stu Sjouwerman

When your products get targeted with custom made ransomware, you know you've got it made. We're talking about NAS (network-attached storage) built by Synology in Taiwan. the malware has ...

The Internet of Things, Risks Of Hooking Up Appliances

Aug 2, 2014 10:00:00 AM By Stu Sjouwerman

This is a (very) short sci-fi story that looks at the cyber security risks of hooking up household appliances to the Internet. Warning - this is one grumpy man.

Security Awareness Training blocked Ransomware Infection

Aug 1, 2014 11:48:00 AM By Stu Sjouwerman

ComputerWorld in Australia reported on a very nice success where security awareness training prevented a major ransomware infection. They started out with: "People like to ask the ...

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