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

WSJ Gives Powerful Ammo For More InfoSec Budget

Oct 12, 2015 10:57:30 AM By Stu Sjouwerman

A front page article in the Wall Street Journal describes the escalating arms race for a possible cyberwar. This article is a great way to get C-level execs a crash course about ...

Teach your execs well: Stop phishing in the C-suite

Oct 9, 2015 10:25:20 AM By Stu Sjouwerman

J. Peter Bruzzese is an InfoWorld columnist and five-time-awarded Microsoft MVP (current technical expertise Office 365, previous four years Exchange). He is a technical speaker, author ...

[INFOGRAPHIC] Social Engineering

Oct 9, 2015 6:30:03 AM By Stu Sjouwerman

“You could spend a fortune purchasing technology and services, and your network infrastructure could still remain vulnerable to old-fashioned manipulation.” — Kevin Mitnick. Bad guys ...

Postal employees fall to internal phishing sting

Oct 8, 2015 5:15:00 PM By Stu Sjouwerman

Aaron Boyd wrote: "Determined not to fall victim to another network breach, the U.S. Postal Service is phishing its own employees, testing their ability to recognize a scam before it's ...

[INFOGRAPHIC] Men Twice As Likely To Fall For Phishing Attacks

Oct 8, 2015 4:59:09 PM By Stu Sjouwerman

In the never ending battle of the sexes, it looks as though women are winning the phishing fight according to new research from KnowBe4. In an analysis done by KnowBe4 of 201,755 phishing ...

Near-flawless Social Engineering attack spoiled by single flaw

Oct 8, 2015 11:22:21 AM By Stu Sjouwerman

Steve Ragan at CSO has a great story about a CEO Fraud social engineering attack that was caught just in time because the employees were given effective security awareness training. This ...

Cisco Takes Down $60M Ransomware Operation

Oct 7, 2015 1:32:33 PM By Stu Sjouwerman

Good news for a change. Cisco just posted that they disabled a cybercrime operation that used the Angler exploit kit to distribute ransomware. The takedown shutttered a global ransomware ...

CyberheistNews Vol #5 #42 Scam Of The Week: Facebook Dislike Button

Oct 6, 2015 9:31:01 AM By Stu Sjouwerman

*|CyberHeistNews|* CyberheistNews Vol #5 #42 Oct 6, 2015 Scam Of The Week: Facebook Dislike Button At a Sept 15, 2015 Town Hall Q&A session at Facebook headquarters, Zuckerberg ...

Men Are Twice As Likely To Fall For Phishing Attacks

Oct 4, 2015 8:08:46 AM By Stu Sjouwerman

In an analysis done by KnowBe4 of 201,755 phishing emails sent over the past 30 days, it was found men appear to be more prone to clicking on a phishing email than women. In further ...

Scam Of The Week: Facebook Dislike Button

Oct 3, 2015 11:12:50 AM By Stu Sjouwerman

At a Sept 15, 2015 Town Hall Q&A session at Facebook headquarters, Zuckerberg mentioned that for years users had been asking about a 'dislike button', and that Facebook was finally ...

New KnowBe4 Feature CEO Fraud Prevention Phishing Test

Oct 2, 2015 11:17:45 AM By Stu Sjouwerman

We just released a new feature that allows you to test your employees for "CEO Fraud" spear phishing attacks. When you create a phishing email template, you can now specify a Sender Name ...

KnowBe4 Third Quarter 2015 is 400% Over Q3 2014

Oct 1, 2015 10:19:41 AM By Stu Sjouwerman

We had a blow-out quarter this Q3 2015. When we looked at Q3 2014 and did the math, we expanded a mind boggling 400% year-over-year. We added 267 new accounts in September only, which was ...

Fixing the #1 Problem in Computer Security: A Data-Driven Defense

Sep 29, 2015 10:19:16 AM By Stu Sjouwerman

This is a great whitepaper you can download for free at Microsoft written by IT Security Guru Roger Grimes. Here is the Executive Summary: "Many companies do not appropriately align ...

CyberheistNews Vol #5 #41 KnowBe4 Got A CEO Fraud Phishing Attack. Wrong Mark!

Sep 29, 2015 8:07:38 AM By Stu Sjouwerman

*|CyberHeistNews|* CyberheistNews Vol #5 #41 Sept 29, 2015 KnowBe4 Got A CEO Fraud Phishing Attack. Wrong Mark! KnowBe4 has been warning against "CEO Fraud" emails for a few months now, ...

Ransomware Attacks Move From Consumers To Small Medium Business

Sep 28, 2015 2:47:39 PM By Stu Sjouwerman

The criminal gangs that live off ransomware infections are targeting Small Medium Business (SMB) instead of consumers, a new Trend Micro Analysis shows. The reason SMB is being targeted ...

Miami County pays CryptoWall Ransom To Get 911 Center Back Online

Sep 28, 2015 11:14:34 AM By Stu Sjouwerman

The Miami County Communication Center’s administrative computer network system was compromised with a CryptoWall 3.0 ransomware infection which locked down their 911 emergency center. ...

The Meaning Of The U.S. and China Hacking Agreement

Sep 27, 2015 10:38:41 AM By Stu Sjouwerman

Last Friday, after years of data breaches by Chinese hackers, many months of negotiations and occasional threats from the White House, while China's President Xi was in DC, the U.S. and ...

The ten immutable laws of security administration revisited

Sep 26, 2015 11:07:00 AM By Stu Sjouwerman

Casper Manes at GFI wrote a great blog post that I'm crossposting here. Welcome back to our series for people looking to break into the Infosec field or just learn more about information ...

KnowBe4 got a CEO Fraud phishing attack. Wrong Mark!

Sep 26, 2015 9:32:36 AM By Stu Sjouwerman

KnowBe4 has been warning against "CEO Fraud" emails for a few months now, the FBI also calls them "Business Email Compromise" (BEC). I had been hoping we would get one of these ourselves, ...

CyberheistNews Vol #5 #40 Scam Of The Week: Deceptive Amazon Account Threat

Sep 22, 2015 9:29:41 AM By Stu Sjouwerman

CyberheistNews Vol #5 #40 Sept 22, 2015 Scam Of The Week: Deceptive Amazon Account Threat Seeing the fact that Amazon is the World's largest retailer it's surprising that there aren't ...

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