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

Phishing Tops IRS List of Tax-Related Scams for 2018

Apr 7, 2018 6:15:05 PM By Stu Sjouwerman

Michael Trimarchi at the Bloomberg Bureau of National Affairs wrote an excellent article about the continued risk of phishing, as reported by the IRS: "The stealing of personal ...

Best-Funded US Cyber Security Startups By State [InfoGraphic]

Apr 6, 2018 1:43:50 PM By Stu Sjouwerman

We were just made aware of this very interesting map created by CBInsights. It lists the most well-funded cyber security companies in each US State as of Feb 2, 2018. To our pleasant ...

Scam Of The Week: Fiendishly Clever Gmail Phishing Scam You Need To Know About

Apr 6, 2018 11:28:53 AM By Stu Sjouwerman

Twitter user @_thp shared a recent phishing scam that they received; and it’s so fiendishly clever that it’s gone viral. They wrote: "This is the most clever phishing scam I've ever ...

New Security Tool: Mailserver Security Assessment [It's Free]

Apr 5, 2018 9:56:49 AM By Stu Sjouwerman

Do you know what's getting through your mail filters?

CyberheistNews Vol 8 #14 Report: Ransomware Is the New Normal. 52% Have Lost Faith in Antivirus and 44% Agree AV Is Dead

Apr 3, 2018 10:02:24 AM By Stu Sjouwerman

SAM.Gov Hackers Were Handed Spear Phishing, Spoofing & Credential Theft On A Gold Platter

Mar 31, 2018 6:49:45 PM By Stu Sjouwerman

Cybercrooks who stole federal payments by hacking contractor accounts on a GSA website used sophisticated spear phishing techniques to steal login credentials and then diverted payments ...

SAM.gov hackers used spear phishing, email spoofing and credential theft

Mar 30, 2018 10:54:29 AM By Stu Sjouwerman

Cybercrooks who stole federal payments by hacking contractor accounts on a GSA website used sophisticated spear phishing techniques to steal login credentials and then diverted payments ...

Scam Of The Week: 150 Million Under Armour MyFitnessPal Users Are Now Phishing Targets

Mar 30, 2018 6:52:29 AM By Stu Sjouwerman

BREAKING NEWS: Under Armour's health- and fitness-tracking app, MyFitnessPal, has been hit by a data breach. Roughly 150 million MyFitnessPal users are affected, Under Armour says. Under ...

So, How Did Russia Succeed In Hacking Our Energy Systems?

Mar 30, 2018 6:15:55 AM By Stu Sjouwerman

The nightmare scenario is the grid going down and we're all pushed back a 100 years (electricity started around 1880 but only became common in the 1930s). James Conca wrote in Forbes: ...

The Malicious Use of Artificial Intelligence in Cyber Security

Mar 28, 2018 11:31:12 AM By Stu Sjouwerman

Kevin Townsend wrote a great article about AI in SecurityWeek, looking at the current state of affairs and the expected near future, based on a recent important scientific paper titled: ...

Report: Ransomware is the New Normal. 52% Have Lost Faith in Antivirus and 44% Agree AV is Dead

Mar 28, 2018 7:18:53 AM By Stu Sjouwerman

A new report on malware says that the majority of companies globally have been victims of ransomware in the last 12 months. 52% Have Lost Faith in Antivirus and 44% Agree AV is Dead A new ...

Leader of Carbanak Cybercrime Group Who Stole Over 1Billion Arrested in Spain [InfoGraphic]

Mar 27, 2018 2:12:43 PM By Stu Sjouwerman

March 26, 2018 -- Some good news for a change! Police in Spain have arrested an individual identified as Denis K. who is believed to be the mastermind behind the Carbanak (also known as ...

Social Engineering Fraud and Cyber Insurance – Are You Covered?

Mar 27, 2018 10:49:46 AM By Stu Sjouwerman

We’ve covered this before but here’s another article on exclusionary clauses. The loophole: "No unauthorized use of the victims Computer System". Excellent reminder by Drinker Biddle ...

CyberheistNews Vol 8 #13 City of Atlanta IT Systems Shut Down by SamSam Ransomware

Mar 26, 2018 9:53:07 AM By Stu Sjouwerman

US Disrupts 'Massive And Brazen' Iranian Phishing Scheme, DOJ Says

Mar 25, 2018 3:19:26 PM By Stu Sjouwerman

Friday morning the US Department of Justice announced that it had indicted Iran's Mabna Institute and nine of the individuals who work for it. The charges include conspiracy to commit ...

Legacy Cybersecurity Defenses Won’t Keep Pace with New Ransomware and Cryptojacking Threats

Mar 25, 2018 2:50:58 PM By Stu Sjouwerman

Findings from the 2018 Webroot Threat Report Reveal the Increasing Sophistication of Phishing, Malware, and Cryptojacking. Webroot, revealed results from their 2018 annual threat report, ...

The AVCrypt Ransomware Tries To Uninstall Your AV Software

Mar 25, 2018 10:18:18 AM By Stu Sjouwerman

Larry Abrams at Bleepingcomputer reported this strain first: "A new ransomware named AVCrypt has been discovered that tries to uninstall existing security software before it encrypts a ...

City of Atlanta IT Systems Shut Down by SamSam Ransomware. Demand Is $51K To Decrypt

Mar 23, 2018 6:50:32 AM By Stu Sjouwerman

It was all over the major press yesterday. The Mayor of Atlanta, Georgia has confirmed that several local government systems are currently down due to a ransomware infection and said the ...

Why Social Engineering Works And How To Arm Yourself Against "Human Hacking"

Mar 22, 2018 7:24:08 AM By Stu Sjouwerman

Let me share some observations after 7 years of building KnowBe4 from scratch into a 100 million dollar company. We train your employees to recognize social engineering attacks and not ...

MY TAKE: Why ‘cryptojacking’ is spreading faster than ransomware — and may be more insidious

Mar 20, 2018 5:32:27 PM By Stu Sjouwerman

Has there ever been anything more tailor made for hackers than crypto currency? Is anyone surprised that hackers are innovating ways to crack into digital wallets and currency exchanges? ...

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