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

New Feature: 2-Factor Authentication

Aug 17, 2016 4:36:29 PM By Stu Sjouwerman

All user accounts may now be enabled to require MFA (multi-factor authentication) [also called 2FA, 2 Factor Authentication]. Once configured and enabled for an account the system will ...

KnowBe4 Debuts at #139 on Inc 500 List of America’s Fastest Growing Private Companies

Aug 17, 2016 8:42:58 AM By Stu Sjouwerman

I have some exciting news: KnowBe4 made it in the Inc 500! To start off with, a very big thank you to all our customers who understood the need to manage the ongoing problem of social ...

I was interviewed by DARKReading at BlackHat [VIDEO]

Aug 15, 2016 5:01:52 PM By Stu Sjouwerman

While at BlackHat, the editorial team from DARKReading wanted to know more about what we were doing at KnowBe4. This was a fun, relaxed 15 minutes where we chatted about problems like ...

The Ultimate Pop-up Phishing Warning Message

Aug 15, 2016 4:54:20 PM By Stu Sjouwerman

'Just weeks after she started preparing opposition research files on Donald Trump’s campaign chairman Paul Manafort last spring, Democratic National Committee consultant Alexandra Chalupa ...

CyberheistNews Vol 6 #33 Ransomware Roundup: Fresh Strains And New Nasty Features

Aug 15, 2016 9:43:01 AM By Stu Sjouwerman

PokemonGo Ransomware installs Backdoor Account and Spreads to other Drives

Aug 14, 2016 10:43:11 AM By Stu Sjouwerman

With the popularity of PokemonGo, it was inevitable that a malware developer would create a ransomware that impersonates it. This is the case with a new Hidden-Tear ransomware discovered ...

Hitler ransomware just deletes files instead of encrypting them

Aug 14, 2016 10:19:30 AM By Stu Sjouwerman

Security experts detected and analyzed a new threat, the Hitler ransomware, that doesn’t encrypt files but simply deletes them. Larry Abrams at Bleepingcomputer commented: " It looks like ...

Scam Of The Week: New Social Security Account Fraud

Aug 13, 2016 3:27:36 PM By Stu Sjouwerman

Bad guys are abusing the Social Security Administration's (SSA) online service called My SocialSecurity Account in two ways: A phishing scam which encourages employees to create an ...

July 2016 Ransomware Roundup: New Strains And New Nasty Features

Aug 13, 2016 11:08:17 AM By Stu Sjouwerman

The ransomware market is rapidly maturing, we start seeing upgraded strains and rebranded versions sold cheaply in the Dark Web. And mainstream media have finally glommed on after years ...

When the Bad Guys Go to Ransomware B-School

Aug 12, 2016 1:17:13 PM By Stu Sjouwerman

By Eric Howes, KnowBe4 Principal Lab Researcher. As we have documented numerous times in this space over the past few years, the bad guys have proven to be relentless innovators, ...

CyberheistNews Vol 6 #32 Scary Stuff And Hot Security Products At Black Hat And DEF CON

Aug 8, 2016 9:55:22 AM By Stu Sjouwerman

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 ...

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