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

The Latest from Black Hat 2016: Ransomware By the Numbers

Aug 4, 2016 4:07:30 PM By Stu Sjouwerman

The annual Black Hat security conference always produces a wealth of interesting papers, presentations, talks, live demos, and security news. This year's Black Hat USA 2016 event, which ...

CyberheistNews Vol 6 #31 [ALERT] Scam Of The Week: Illegal Game of Thrones Download Phishing Attack

Aug 2, 2016 9:32:04 AM By Stu Sjouwerman

*|CyberHeistNews|*

Yes, that email is really from Paypal. And, yes, it's really malicious.

Aug 1, 2016 7:36:36 PM By Stu Sjouwerman

Score another one for the bad guys, who have yet again demonstrated their seemingly inexhaustible ability to concoct new methods to exploit legitimate services in order to bypass existing ...

First Half 2016 Top 10 Phone Scams Revealed

Jul 31, 2016 9:48:22 AM By Stu Sjouwerman

You may not have heard of Atlanta-based Pindrop Labs. They have developed an innovative way to detect fraudulent phone calls called a "phone print", and their solutions reduce fraud ...

New KnowBe4 Phishing Templates: A Summary 7/30/2016

Jul 30, 2016 11:26:31 AM By Stu Sjouwerman

Over the past few weeks our Phishing Templates Mistress Katie and her team have added 17 new templates for use by customers in their simulated phishing campaigns.

Scam Of The Week: Illegal Game of Thrones Download

Jul 30, 2016 10:07:40 AM By Stu Sjouwerman

Illegally downloading television shows and movies from a variety of torrent websites is done all the time. The HBO series, "Game of Thrones" is the #1 downloaded, not surprisingly. This ...

New Ransomware-as-a-Service Offering Goes Live

Jul 30, 2016 9:24:16 AM By Stu Sjouwerman

The cybermafia behind the Petya/Mischa ransomware just launched their RaaS offering July 25th. It pays "distributors" a part of the ransom that gets extorted from victims and increases ...

Cyber Attack Maps...Accurate Or Just Eye Candy?

Jul 27, 2016 10:40:08 AM By Stu Sjouwerman

Here are the top 5 Cyber Attack Maps found in Google. They all seem to show the cyber attacks in a slightly different perspective. This is the Norse attack map as an example:

Why does Kevin Mitnick recommend 20+ character passwords?

Jul 27, 2016 10:15:14 AM By Stu Sjouwerman

The background is based on current state-of-the-art password cracking technology. In short, hackers penetrate the network, get access to a domain controller and pull the file with all ...

CyberheistNews Vol 6 #30 Celeb Hacker Who Phished Nude Images Gets Six Months In Prison

Jul 25, 2016 9:44:37 AM By Stu Sjouwerman

Scam Of The Week: RNC Attendees Get Hacked Through Fake Wi-Fi Networks

Jul 24, 2016 10:02:55 AM By Stu Sjouwerman

The PR people at Avast decided to have some fun and created a series of fake Wi-Fi networks at various locations around the Republican National Congress in Cleveland. Avast’s team set up ...

Why take files hostage when you can take victim's private lives instead?

Jul 19, 2016 11:14:35 AM By Stu Sjouwerman

A new malware strain dubbed "Delilah" is being sprung on unsuspecting victims visiting "popular adult and gaming sites." The goal of this malware, which is currently being classified as a ...

CyberheistNews Vol 6 #29 New Locky Ransomware Strain Encrypts Files Even When Machine Is Offline

Jul 19, 2016 9:43:53 AM By Stu Sjouwerman

Criminal Ransomware Now Cheaper Than Standard Antivirus

Jul 18, 2016 2:12:38 PM By Stu Sjouwerman

For just $39 you, too, can have your very own ransomware with a lifetime license. What does a year's subscription to one of the major antivirus cost? Last I checked, much more than $39. ...

Scam Of The Week: Pokémon Malware, Muggings And Other Mayhem

Jul 16, 2016 11:20:22 AM By Stu Sjouwerman

In case you just came back from vacation, there literally is a new craze going on with an augmented-reality smartphone app called Pokémon Go. It's a geocaching game, meaning it's tied to ...

Locky Ransomware Encrypts Files Even When Machine Is Offline

Jul 16, 2016 10:28:40 AM By Stu Sjouwerman

Locky is currently one of the top 3 ransomware threats, following closely behind CryptoWall. It's not surprising that this strain has undergone several updates since the beginning of the ...

The fine art of not being stupid - security awareness training

Jul 14, 2016 2:24:50 PM By Stu Sjouwerman

Brian Honan wrote a GREAT post at HelpnetSecurity. This is a cross-post of his excellent article, nothing changed, all the internal links to helpnet security were left in place. "There is ...

Lazy Ransomware Bad Guys Just Delete Your Files - Never Mind Decrypting

Jul 12, 2016 12:56:26 PM By Stu Sjouwerman

There is a new strain of "ransomware" that does not bother with the whole encryption thing at all. These bad guys seem to think it's just an unnecessary distraction and too much work. ...

CyberheistNews Vol 6 #28 [ALERT] There Is A Nasty New MBR & File Encryption Ransomware Strain

Jul 11, 2016 9:47:29 AM By Stu Sjouwerman

Scam Of The Week: FBI Warns Against Data Breach Extortion

Jul 11, 2016 7:58:40 AM By Stu Sjouwerman

The number of data breaches keeps going up. Last week it was more than 1,000 Wendy's where credit card records got ripped off. Fraudsters quickly use the news release of a high-profile ...

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