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 campaigns and malware infections are both up more than 40% since Q2 ‘17

Dec 3, 2017 7:28:13 AM By Stu Sjouwerman

The NTT Security Global Threat Intelligence Center (GTIC) 2017 Q3 Threat Intelligence Report provides a glimpse inside the research conducted by NTT Security researchers over the last ...

Google Kicks Harmful Apps Out Of Google Play And Offers 5 Steps Against Social Engineering

Dec 3, 2017 6:56:40 AM By Stu Sjouwerman

You're always better off getting apps from reputable stores like Google Play than you are from potentially dodgy, at best unknown, third-party sites. But even Google Play isn't immune ...

If Willie Sutton were working today, he'd be stealing cryptocurrency, not wasting time on banks

Dec 2, 2017 11:36:50 AM By Stu Sjouwerman

Because that's where the money is. Criminals have been installing cryptocurrency miners on victim machines that turn them into sources of money. These operate without the users' ...

Proposed New Legislation: "Security Awareness Training For Your Users Or Go To Jail"?

Dec 2, 2017 11:10:20 AM By Stu Sjouwerman

OK, it may be hyberbole, but since 91% of data breaches are caused by successful spear phishing attacks, it's not entirely crazy to say: "security awareness training your users or go to ...

New CyberThreat Survey Confirms: Biggest Security Obstacle Is Low User Security Awareness

Dec 2, 2017 10:16:06 AM By Stu Sjouwerman

The CyberEdge Group is an award-winning research firm that serves information security vendors and service providers. They recently surveyed 1,100 qualified IT security decision makers ...

Here is your KnowBe4 Holiday Shopping Cybersecurity Video!

Dec 1, 2017 5:32:36 PM By Stu Sjouwerman

UK Shipping firm Clarksons falls victim to hybrid ransomware / data theft extortion

Nov 29, 2017 4:06:33 PM By Stu Sjouwerman

Shipping company Clarksons has fallen victim to a major ransomware attack that could result in the exposure of private data, the company warned today. The statement continued: "Our ...

77% of the FTSE 100 Have Compromised Credentials - What is your Stolen-password percentage?

Nov 29, 2017 11:06:44 AM By Stu Sjouwerman

IT security vendor Anomali, released a new report showing the volume of stolen credentials of FTSE 100 employees tripled In 2017, and a whopping 77% of the FTSE 100 were exposed with an ...

Yahoo Hacker Arrested And Admits Working for The Russians

Nov 29, 2017 9:42:02 AM By Stu Sjouwerman

The Kazakhstan-born Canadian citizen Karim Baratov (22) has pleaded guilty to massive 2014 Yahoo hack that affected three billion accounts. He admitted that he generally spearphished his ...

Stolen Passwords Of FTSE 100 Employees Tripled In 2017

Nov 29, 2017 7:21:09 AM By Stu Sjouwerman

The Financial Times Stock Exchange 100 share index is an average of share prices in the 100 largest, most actively traded companies on the London Stock Exchange. IT security vendor ...

Surface Web vs. Deep Web vs. Dark Web: Differences Explained

Nov 28, 2017 7:35:00 AM By Stu Sjouwerman

These three terms are often a source of confusion, especially in connection with cybercrime and where that comes from. If you think that search engines like Google (there are more!) know ...

CyberheistNews Vol 7 #47 Scam of the Week: Warn Your Users About Uber Phishing Attacks

Nov 27, 2017 9:42:01 AM By Stu Sjouwerman

Baffling FBI silence about Russian phishing attacks on US officials

Nov 27, 2017 6:59:05 AM By Stu Sjouwerman

WASHINGTON – The Associated Press revealed a baffling FBI silence about spear phishing attacks by Russian hackers on US officials like the former head of cybersecurity for the U.S. Air ...

Something funny happened on the way to repealing Net Neutrality rules...

Nov 26, 2017 1:00:51 PM By Stu Sjouwerman

Sorry to interrupt your Thanksgiving, but this one has had me laughing all afternoon. You might have seen the news that the Trump-era FCC is planning to repeal the Net Neutrality rules ...

Massive Phishing Attack On Businesses with Evil New Ransomware Strain

Nov 25, 2017 11:02:08 AM By Stu Sjouwerman

The Scarab ransomware strain is updated again and spreads via Necurs botnet in a massive 12.5 million campaign, mostly targeting .com domains. Scarab was spotted June 2017 for the first ...

Spam was nearly dead, then it became an essential tool for crime and came roaring back

Nov 25, 2017 7:59:50 AM By Stu Sjouwerman

John Christian at TheOutline wrote a post that made me take notice because it neatly summarized the current state of affairs and confirms our own experience: spam has morphed and is back ...

URGENT - If IT and Marketing are not freaking out about GDPR compliance, you are not paying attention

Nov 24, 2017 3:04:00 PM By Stu Sjouwerman

I found an article about GDPR compliance written by the fine folks of HubSpot, which we use ourselves here at KnowBe4 use for marketing automation. We have customers in Europe, so our ...

Uber Total Loss: 57 Million Records Stolen But Data Breach Was Hidden For A Year

Nov 22, 2017 7:37:46 AM By Stu Sjouwerman

Oh boy. Uber is known for pushing the limits of the law and has dozens of lawsuits pending against it, but this one went too far and now comes the reckoning. Bloomberg was first to report ...

[ALERT] Zombie Remote Access Phishing Trojan Kills Antivirus

Nov 20, 2017 10:00:00 AM By Stu Sjouwerman

Almost two years ago we took note of two different write-ups on the Adwind (aka AlienSpy) remote access trojan (RAT), one by McAfee and the other by Fidelis Security. Those pieces caught ...

CyberheistNews Vol 7 #45 [HEADS-UP] Skeleton in the Closet: 17-Year Old MS Office Flaw Allows Malware Install When User Opens File

Nov 20, 2017 9:59:43 AM By Stu Sjouwerman

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