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

Got A Chinese Vishing Scam Call in Mandarin

Nov 1, 2018 3:24:11 PM By Stu Sjouwerman

Howard, KnowBe4's HackBusters Discussion Forum Moderator reported on this very interesting phone call he got:

Scammers Target 21 Social Media Users Every Minute

Nov 1, 2018 10:58:51 AM By Stu Sjouwerman

According to a new survey, social media sharing – and oversharing – provides cybercriminals with important personal details to commit identity theft, fraud, and more.

KnowBe4 Fresh Content Update & New Features October 2018

Oct 31, 2018 3:53:07 PM By Stu Sjouwerman

Check out the content and feature updates in the KnowBe4 platform for the month of October!

Scam Of The Week: Cryptocurrency On Twitter

Oct 31, 2018 2:09:06 PM By Stu Sjouwerman

The recent rash of cryptocurrency scams on Twitter show organizations that social media is there to share posts and can’t protect platform users.

KnowBe4 Halloween 2018

Oct 31, 2018 11:22:18 AM By Stu Sjouwerman

Just a shot of almost 600 people in costume !!!

Elon Musk Draws Attention to Cryptocurrency Scams on Twitter

Oct 30, 2018 10:35:18 AM By Stu Sjouwerman

The Tesla founder’s recent tweet about cryptocurrency got him temporarily locked out of his Twitter account, demonstrating the seriousness of the scam.

Sandboxed Defender: Game-Changing Antivirus

Oct 30, 2018 7:26:41 AM By Stu Sjouwerman

With Microsoft’s latest release of Windows Defender running in a virtual sandbox (the first of its kind), it may be time to focus your energies – and budget – on other parts of your ...

CyberheistNews Vol 8 #43 [INFOGRAPHIC] KnowBe4 Top-Clicked Phishing Email Subjects This Third Quarter

Oct 29, 2018 9:45:48 AM By Stu Sjouwerman

Security Rule-Breaking from Ignorance, Convenience, Curiosity

Oct 29, 2018 7:22:39 AM By Stu Sjouwerman

Ignorance of security policies and security threats is one of the primary reasons why employees break cybersecurity rules, says Ericka Chickowski at Dark Reading. A study conducted by ...

Replica Phishing Sites Prey on User Trust

Oct 25, 2018 9:46:56 AM By Stu Sjouwerman

Attacks leveraging look-alike federated logon pages are more dangerous than malware-laden attachments in email.

That Saudi oil and gas plant that got hacked. You'll never guess who could... OK, it's Russia

Oct 24, 2018 5:18:24 PM By Stu Sjouwerman

FireEye thinks it found the evil genius behind a nasty cyber-infection at a Saudi Oil refinery.

Everything is Negotiable… Including Ransomware Payments

Oct 24, 2018 12:54:05 PM By Stu Sjouwerman

Should you find yourself in the situation where paying the ransom is your only out, it’s important to know how to navigate – and minimize – the payment. Cyber attacks are the new reality ...

KnowBe4 Top-Clicked Phishing Email Subjects for Q3 2018 [INFOGRAPHIC]

Oct 23, 2018 9:30:00 AM By Stu Sjouwerman

The latest results of KnowBe4's quarterly top-clicked phishing email subjects is now available. We report on three different categories: general emails, social media related subjects, and ...

Everyone’s Cyber-Worried; No One’s Cyber-Prepared

Oct 22, 2018 1:55:14 PM By Stu Sjouwerman

New data from the 2018 Chubb Cyber Risk Survey shows people and companies have a false sense of cybersecurity and aren’t really doing much about it.

CyberheistNews Vol 8 #42 [Heads-Up] U.S. Government: "Your Weak Cyber Security Violates Federal Law"

Oct 22, 2018 10:07:16 AM By Stu Sjouwerman

Scam Of The Week: Sextortion With A RATty Twist

Oct 21, 2018 10:47:57 AM By Stu Sjouwerman

Sextortion is a form of blackmail where the extortionist claims to have photos or video of the victim watching adult entertainment on their computer. The criminal threatens to send the ...

[Heads-up] U.S. Government: "Your Weak Cyber Security Violates Federal Law"

Oct 21, 2018 8:36:39 AM By Stu Sjouwerman

Reuters just made me aware of a U.S. Securities and Exchange Commission report about a recent SEC investigation of nine companies that had been victims of CEO fraud had sufficient ...

[Heads-up] Here Is Some New Powerful Ammo To Get InfoSec Budget Approval!

Oct 20, 2018 9:33:43 AM By Stu Sjouwerman

The team at Forbes Magazine's Tech Council asked me to write up the lessons we have learned over the last 8 years of helping you keep the bad guys out of your network. It took me a while, ...

212 Million Exposed Contacts Would Be a Scammer’s Dream

Oct 18, 2018 11:48:28 AM By Stu Sjouwerman

A recent discovery of exposed data on a web-facing server owned by data aggregator and analytics provider Apollo demonstrates how data breaches empower scammers.

CEOs and Boards are Unprepared for Cyber Risk

Oct 18, 2018 11:25:43 AM By Stu Sjouwerman

Deloitte’s CEO and Board Risk Management Survey shows organizations are unprepared for the future of cyberattack at the highest levels.

Security Awareness Training Blog

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