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

Sticking With WinXP? 10 Things You Must Do

Mar 6, 2014 9:42:00 AM By Stu Sjouwerman

I'm sure you know that April 8 2014, Microsoft will stop supporting Windows XP and stop creating security updates for XP as well. That means that when after April 8, 2014 another security ...

Pre-installed malware turns up on new phones

Mar 6, 2014 9:23:00 AM By Stu Sjouwerman

A fake version of Netflix that steals personal data and sends it to Russia has been found on several phone models

Inevitable: Phishing That Pretends To Be Salesforce.com

Mar 6, 2014 8:38:00 AM By Stu Sjouwerman

Just a heads-up, screen shot above. The lifehacker site in Australia warned about a phishing scam using a "salesforce" email as bait. The bad guys will use anything to get you to click, ...

Are malware threats making anti-virus software useless?

Mar 5, 2014 1:59:00 PM By Stu Sjouwerman

CBC News had a pretty controversial headline today. They wrote that some computer consultants say the global malware threat has gotten so bad that conventional security measures, such as ...

How to Test the Phishing Savvy of Your Staff

Mar 5, 2014 1:28:00 PM By Stu Sjouwerman

CyberheistNews Vol 4, # 09 41 Percent Of Infected Pay The CryptoLocker Ransom

Mar 4, 2014 9:07:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 09

Average Enterprise Is Hit by a Cyber Attack Every 1.5 Seconds

Mar 1, 2014 3:57:00 PM By Stu Sjouwerman

FireEye released its yearly Advanced Threat Report, and they did some interesting math. Enterprises are hit by cyber attacks on average once every 1.5 seconds, which is double from the ...

41 Percent Of Infected Pay The Cryptolocker Ransom

Mar 1, 2014 9:10:00 AM By Stu Sjouwerman

I have warned about the Cryptolocker ransomware before, but now we have some hard numbers about the percentage of people that are forced to pay up when a workstation or server has been ...

CyberheistNews Vol 4, # 08: This Week Top 10 Phishing Scams

Feb 25, 2014 9:31:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 08

Hackers Used Spear Phishing Attack To Hack CNN Blogs

Feb 21, 2014 2:56:00 PM By Stu Sjouwerman

Security analysts at Intelligence firm InterCrawler published the details of the investigation on recent attack against CNN Blogs and social media accounts. Recently a few social media ...

80% Fail To Maintain PCI Compliance Between Assessments

Feb 21, 2014 2:15:00 PM By Stu Sjouwerman

OUCH. Verizon said in a report this month that nearly 80% of organizations that achieve annual compliance with the PCI Data Security Standard -fail- to maintain that status after passing ...

Kiss Your Old Security Awareness Training Program Goodbye!

Feb 18, 2014 11:03:00 AM By Stu Sjouwerman

Is Your Security Awareness Training Program Not Working? Are Users Still Clicking Phishing Links And Opening Infected Attachments?

Knowbe4 CyberheistNews Vol 4, 07 SNEAK PEEK At New Site: HACKBUSTERS

Feb 18, 2014 9:05:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 07

This Week Top 10 Phishing Scams

Feb 17, 2014 4:58:00 PM By Stu Sjouwerman

It's my job to keep an eye out for the most recent phishing scams and let everyone know. One of the newsletters I get as a source for this is called "hoaxslayer". They just reported some ...

SNEAK PEEK at hot new site HACKBUSTERS

Feb 14, 2014 11:51:00 AM By Stu Sjouwerman

KnowBe4 Announces HackBusters, A Curated IT Security News Site

NIST Releases Voluntary Cybersecurity Compliance Framework

Feb 13, 2014 4:12:00 PM By Stu Sjouwerman

Online social engineering scams flourish around Valentine's Day

Feb 13, 2014 10:30:00 AM By Stu Sjouwerman

Michael Cooney at Network World summarized the current scams doing the rounds related to online dating and romance sites. A good reminder that heartless con artists use social engineering ...

BREAKING NEWS Target Data Breach Started With Phishing Attack

Feb 12, 2014 4:12:00 PM By Stu Sjouwerman

CyberheistNews Vol 4, # 06 Cryptolocker Scrambles Files Of US Law Firm

Feb 11, 2014 9:13:00 AM By Stu Sjouwerman

CyberheistNews Vol 4, # 06

Which HackBusters Logo Do You Like Best?

Feb 10, 2014 4:09:00 PM By Stu Sjouwerman

You miss important IT security news because you aren’t subscribed to the right sources, or the relevant security news is snowed under simply because of the incredible volume. So KnowBe4 ...

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