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

Phishing Attack Uses Stuxnet Technology And Makes PCs Into Roombugs

Feb 26, 2017 9:43:16 AM By Stu Sjouwerman

Researchers have uncovered an advanced malware-based operation that siphoned more than 600 gigabytes from about 70 targets in a broad range of industries, including news media, and ...

Survey: Most Hackers Break In Within Six Hours

Feb 25, 2017 10:09:05 AM By Stu Sjouwerman

A recent survey of 70 professional hackers and penetration testers found that 60% of them take a maximum of just six hours to compromise a target. The research titled The Black Report, ...

CyberheistNews Vol 7 #8 Google: "Office Inbox Receives 6.2X More Phishing Than Your Inbox at Home".

Feb 21, 2017 9:46:36 AM By Stu Sjouwerman

CyberheistNews | KnowBe4

I just learned how to hoverboard... LOL

Feb 20, 2017 12:56:02 PM By Stu Sjouwerman

[On-Demand Webinar] Forrester TEI™: Value of KnowBe4 Goes Beyond ROI

Feb 20, 2017 11:35:41 AM By Stu Sjouwerman

KnowBe4 recently commissioned Forrester to conduct a Total Economic Impact™ (TEI) study, examining the potential Return on Investment (ROI) enterprises might realize by implementing the ...

Hackers Demand $25K-$30K After Ransomware Attack Takes Down Bingham County Servers

Feb 20, 2017 7:08:39 AM By Stu Sjouwerman

BLACKFOOT — Bingham County officials are scrambling to rebuild parts of their computer infrastructure after a ransomware attack took down county servers on Wednesday. The Bingham County ...

7 Urgent Reasons For Creating A Human Firewall

Feb 19, 2017 9:45:47 AM By Stu Sjouwerman

I was at RSA 2017 in San Francisco last week, and apart from meetings with customers, VCs and the Press, I found a large amount of relevant security news. Out of the firehose of RSA data, ...

Google: "Office Inbox Receives 6.2X More Phishing And 4.3X More Malware Than Your Inbox At Home".

Feb 17, 2017 8:26:44 PM By Stu Sjouwerman

Google Research analyzed over a billion emails passing through Gmail, and the results were presented yesterday at the RSA security conference in San Francisco. Extremely interesting ...

CyberheistNews Vol 7 #7 [ALERT] DynA-Crypt Ransomware Steals and Deletes Your Data

Feb 13, 2017 9:42:33 AM By Stu Sjouwerman

[Heads-Up] First-Ever Russian Malicious Mac Macro Discovered

Feb 12, 2017 9:31:25 AM By Stu Sjouwerman

Appleinsider reported Feb 9, 2017: "Mac malware discovered in Microsoft Word document with auto-running macro", which was the second example of malware targeting macOS users this week. ...

Scam Of The Week: Valentine’s Day Phishing Attacks

Feb 11, 2017 3:11:31 PM By Stu Sjouwerman

It is time to remind your users that heartless con artists use social engineering tactics to trick people looking for love. The FBI's Internet Crime Complaint Center warns every year that ...

[ALERT] DynA-Crypt Ransomware Steals And Deletes Your Data

Feb 11, 2017 10:52:17 AM By Stu Sjouwerman

Our friend Larry Abrams at Bleepingcomputer alerted the world about a new strain of ransomware called DynA-Crypt that was put together using a malware creation kit by people that are not ...

CRYSIS Ransomware Is Back And Uses RDP Brute Force To Attack U.S. Healthcare Orgs

Feb 11, 2017 9:53:56 AM By Stu Sjouwerman

Remember the CRYSIS ransomware? The attacks started up again, mostly targeting US healthcare orgs. using brute force attacks via Remote Desktop Protocol (RDP). The number of attacks has ...

How Hacking Became Russia’s Weapon of Choice

Feb 9, 2017 7:21:10 AM By Stu Sjouwerman

A study by the World Bank stated that Russia boasts more than 1 million software specialists involved in research and development. Russian illegal cyber warriors are among the most ...

CyberheistNews Vol 7 #6 [IRS ALERT] Scam of the Week Blends CEO Fraud and W-2 Phishing

Feb 7, 2017 9:49:48 AM By Stu Sjouwerman

KnowBe4 Introduces New “Social Engineering Indicators” Training Method

Feb 7, 2017 8:50:07 AM By Stu Sjouwerman

Today, we are introducing a new training method that IT managers can use to better manage the continually increasing social engineering threats. Social Engineering Indicators (SEI) turns ...

Fake Netflix App Is Actually Ransomware

Feb 5, 2017 8:53:53 AM By Stu Sjouwerman

Kaspersky warned on their blog: "People are downloading a new app, looking to get free access to Netflix accounts. What they’re actually getting is a malware strain called Netix that ...

Careless Licking Gets A Nasty Ransomware Phishing Infection: 1,000+ Machines Down

Feb 4, 2017 9:40:14 AM By Stu Sjouwerman

More than 1,000 government computer systems shut down. A county in Ohio, US, has had to shut down its entire IT infrastructure due to a ransomware infection. County Auditor Mike Smith ...

Scam Of The Week Blends CEO Fraud And W-2 Phishing

Feb 3, 2017 7:33:39 AM By Stu Sjouwerman

I have talked about CEO fraud here many times — e-mail attacks spoofing the boss and social engineering a high-risk employee into wiring funds to a bank account controlled by the bad ...

Cisco: "Spam makes major comeback. Users are your last line of defense".

Feb 1, 2017 7:39:42 AM By Stu Sjouwerman

Whoa Nellie. Just when you thought that spam was on its way out, Cisco’s 2017 Annual Cybersecurity Report shows the opposite. Spam is making a surprising comeback as a threat to your ...

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