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.

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Ransomware Infection Causes Loss of 8 Years Of Police Department Evidence

Jan 27, 2017 11:24:58 AM By Stu Sjouwerman

The Police Department in Cockrell Hill, Texas released in a press release that they lost 8 years worth of evidence after the department's server was infected with ransomware.

CyberheistNews Vol 7 #4 [ALERT] USB Sticks Could Infect Your Network With New Spora Ransomware Worm

Jan 24, 2017 9:54:53 AM By Stu Sjouwerman

[ALERT] USB Sticks Could Infect Your Network With New Spora Ransomware Worm

Jan 22, 2017 8:09:14 AM By Stu Sjouwerman

The new Spora ransomware strain has now been dissected by more malware researchers and the team from G Data discovered that Spora uses an "innovative" way to spread itself via USB sticks. ...

CyberheistNews Vol 7 #3 Bad News: Your Antivirus Detection Rates Have Dramatically Declined in 12 Months

Jan 17, 2017 9:37:24 AM By Stu Sjouwerman

CyberheistNews | KnowBe4

Bad News: Your Antivirus Detection Rates Have Dramatically Declined In 12 Months

Jan 15, 2017 9:05:58 AM By Stu Sjouwerman

We all had the nagging suspicion that antivirus is not cutting it anymore, but the following numbers confirm your intuition. I have not seen more powerful ammo for IT security budget to ...

Scam Of The Week: IRS Issues Warning On New Tax Phishing Attack

Jan 14, 2017 11:31:04 AM By Stu Sjouwerman

It's unbelievable, but the new tax season is around the corner and the bad guys are already at it. This is a two-phase phishing scam of the week you need to watch out for: PHASE 1: ...

Sophisticated "Spora" Ransomware Demands Future Protection Money

Jan 12, 2017 7:40:51 AM By Stu Sjouwerman

Emsisoft researchers dissected a new ransomware strain that demands users not only pay to recover their encrypted files, but also for immunity from future attacks. The threat is called ...

CyberheistNews Vol 7 #2 Heads-Up! Massive New Locky Ransomware Attack Is Coming

Jan 10, 2017 10:29:56 AM By Stu Sjouwerman

CyberheistNews | KnowBe4

300+ New Ways to Stop Your Users from Clicking on Everything!

Jan 10, 2017 10:00:00 AM By Stu Sjouwerman

You now really have 300+ new ways to make sure your users Think Before They Click!

I Don't Need No Friggen Backup Plan For Ransomware

Jan 10, 2017 7:16:14 AM By Stu Sjouwerman

Did I get your attention? The picture here raised my eyebrows, because of its patent nonsense. Elizabeth Holmes stated this in an interview about being an entrepreneur. It's a bit like ...

The Who Behind The Why Of Relentless Phishing And Ransomware Attacks

Jan 8, 2017 4:31:33 PM By Stu Sjouwerman

Why are organizations in the West subjected to relentless phishing and ransomware attacks? We need to go back in history for a bit to understand what caused this, and determine how we can ...

Criminal India Call Center Uses Social Engineering To Scam 15,000 Americans

Jan 7, 2017 7:45:17 PM By Stu Sjouwerman

I got alerted by a Slashdot story about we have been covering here several times. An FBI agent based in India says the country has now become a major hub for call-center fraud, blaming "a ...

Heads-Up! Massive New Locky Ransomware Attack Is Coming

Jan 7, 2017 10:36:22 AM By Stu Sjouwerman

Jan Sirmer at the Avast blog wrote: "Based on analysis of past Locky ransomware attacks, experts in the Avast Threat Labs predict that another attack is imminent. Locky has taken a ...

Scam Of The Week: Locked PDF Phishing Attack

Jan 6, 2017 8:29:33 AM By Stu Sjouwerman

Wednesday Jan 4th, the SANS Internet Storm Center warned about an active phishing campaign that has malicious PDF attachments in a new scam to steal email credentials. The SANS bulletin ...

Adobe's New VoCo Is PhotoShop For Audio - The Potential For Voice Phishing Is Horrendous

Jan 3, 2017 4:02:51 PM By Stu Sjouwerman

Our friends at www.Social-Engineer.org sent me some interesting news in their January newsletter: "Adobe recently announced Project VoCo at the November Adobe Max conference.

CyberheistNews Vol 07 #01 The New Scary Thing Warning for 2017: Ransomworms

Jan 3, 2017 9:44:19 AM By Stu Sjouwerman

CyberheistNews | KnowBe4

Healthcare Records Unavailable For Months After Ransomware Infection

Jan 2, 2017 2:03:40 PM By Stu Sjouwerman

Healthcare records of an Arizona clinic have not been available for months after a ransomware infection. The Desert Care clinic got infected in August, and they were not able to recover ...

Expect Malicious Machine Learning In 2017, making social engineering more effective

Jan 2, 2017 11:06:42 AM By Stu Sjouwerman

Intel Security's McAfee Threat Predictions for 2017 (PDF) observes that advances in technology are essentially neutral and that developments like machine learning should be welcomed, but ...

KnowBe4 Has Had Another Blow-Out Fourth Quarter

Jan 2, 2017 7:44:04 AM By Stu Sjouwerman

Happy New Year! I'd like to thank all our customers for your support. 2016 has been fantastic. Our year-over-year sales increase was 298% for Q4 2016, with a record number of over 750 new ...

Russian Breach US Grid? Nah, Someone Fell For Social Engineering And Enabled Macros

Dec 31, 2016 10:38:19 AM By Stu Sjouwerman

Breathlessly, the Washington Post reports that the Russian Grizzly Steppe malware was found within the system of a Vermont power utility. Nah, they just dodged a bullet. This time someone ...

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Stu Sjouwerman

Books

Recent Posts

Ransomware Infection Causes Loss of 8 Years Of Police Department Evidence

CyberheistNews Vol 7 #4 [ALERT] USB Sticks Could Infect Your Network With New Spora Ransomware Worm

[ALERT] USB Sticks Could Infect Your Network With New Spora Ransomware Worm

CyberheistNews Vol 7 #3 Bad News: Your Antivirus Detection Rates Have Dramatically Declined in 12 Months

Bad News: Your Antivirus Detection Rates Have Dramatically Declined In 12 Months

Scam Of The Week: IRS Issues Warning On New Tax Phishing Attack

Sophisticated "Spora" Ransomware Demands Future Protection Money

CyberheistNews Vol 7 #2 Heads-Up! Massive New Locky Ransomware Attack Is Coming

300+ New Ways to Stop Your Users from Clicking on Everything!

I Don't Need No Friggen Backup Plan For Ransomware

The Who Behind The Why Of Relentless Phishing And Ransomware Attacks

Criminal India Call Center Uses Social Engineering To Scam 15,000 Americans

Heads-Up! Massive New Locky Ransomware Attack Is Coming

Scam Of The Week: Locked PDF Phishing Attack

Adobe's New VoCo Is PhotoShop For Audio - The Potential For Voice Phishing Is Horrendous

CyberheistNews Vol 07 #01 The New Scary Thing Warning for 2017: Ransomworms

Healthcare Records Unavailable For Months After Ransomware Infection

Expect Malicious Machine Learning In 2017, making social engineering more effective

KnowBe4 Has Had Another Blow-Out Fourth Quarter

Russian Breach US Grid? Nah, Someone Fell For Social Engineering And Enabled Macros

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