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

Case Law Continues to Define the Extent to Which Cyber Insurance Must Cover Losses

Jun 14, 2019 6:09:41 AM By Stu Sjouwerman

Several new cases show the evolution of case law that demonstrates what both cyber insurers and policyholders alike can expect from the courts.

Europol Reminder on Ticket Fraud

Jun 12, 2019 4:42:07 PM By Stu Sjouwerman

Offers that sound too good to be true probably are. It’s an old saw, but one that’s worth revisiting. The too-good-to-be-true offers are most likely fraudulent, according to an alert ...

Tax Phishing in the UK

Jun 12, 2019 1:51:27 PM By Stu Sjouwerman

Her Majesty's Revenue and Customs (HMRC) has processed 2.6 million reports of attempted phishing attacks since 2016, Infosecurity Magazine reports. More than 1.9 million of these phishing ...

Meet The New InfoSec Unicorn: KnowBe4. Thank You For Your Trust!

Jun 12, 2019 6:37:03 AM By Stu Sjouwerman

We're super happy to announce this new milestone. KnowBe4 has reached unicorn status valuing the company at $1 billion with the new KKR $300 million investment. You can read the press ...

CyberheistNews Vol. 9 #24 [Heads-Up] Nigerian Bad Guys Go Over Dead Bodies to Carry out Cyber Crimes

Jun 11, 2019 9:51:34 AM By Stu Sjouwerman

Extortion Threatens Reputational Damage

Jun 11, 2019 6:48:11 AM By Stu Sjouwerman

Scammers are sending emails threatening to damage the reputation of websites unless the sites’ owners hand over 0.3 bitcoin, or around $2,400, according to BleepingComputer.

The CIA will not Fix Your Online Rap Sheet

Jun 11, 2019 6:41:16 AM By Stu Sjouwerman

Scammers are still posing as CIA employees and telling victims that they’re about to be arrested for their involvement in an international pedophile ring, according to the Register. The ...

Corporate Email Creates Unavoidable Phishing Risk

Jun 10, 2019 6:29:24 AM By Stu Sjouwerman

It’s impossible to avoid the risk of phishing attacks entirely, since employees still need to do their jobs, as Kelly Sheridan at Dark Reading puts it. Sheridan points to a recent report ...

[Heads-Up] How Hackers Use Ransomware To Hide Data Breaches And Other Devastating Attacks

Jun 10, 2019 6:15:55 AM By Stu Sjouwerman

Different sources claim that ransomware attacks are either going up or going down. The very real threat remains though and it is clear that the bad guys are moving from consumers as their ...

Why Polymorphic Phishing Attacks Are Skyrocketing And How They Make It In Your User's Inbox

Jun 10, 2019 5:57:28 AM By Stu Sjouwerman

IronScales just released data showing that 42% of phishing email attacks are polymorphic, enabling them to evade many security filters. The company has observed 11,733 polymorphic ...

KnowBe4 Fresh Content and Feature Updates - May 2019

Jun 7, 2019 4:29:56 PM By Stu Sjouwerman

Check out the content and feature updates in the KnowBe4 platform for the month of May!

'BlueKeep' Microsoft Windows Flaw Warning from NSA, Video for How To Patch

Jun 7, 2019 3:16:45 PM By Stu Sjouwerman

Microsoft recently released a fix for for a critical Remote Code Execution vulnerability, CVE-2019-0708, in Remote Desktop Services - that affects older versions of Microsoft Windows. ...

Ransomware in 2019 is Looking to be as Bad as 2018 for State and Local Governments… if not Worse

Jun 4, 2019 3:15:00 PM By Stu Sjouwerman

Governments have proven to be soft targets for cyberattacks leveraging ransomware in 2018. And, from the recent attacks in 2019, it looks like things are just getting started.

Microsoft is Still the Most Impersonated Brand in Phishing Attacks

Jun 4, 2019 1:45:50 PM By Stu Sjouwerman

Cybercriminals are constantly looking for the easiest way to make a buck. And, in the case of phishing attacks, it appears that pretending to be Microsoft is the path of least resistance.

Biometrics Can’t Replace Passwords: A Cybercriminal's Dream

Jun 4, 2019 1:11:44 PM By Stu Sjouwerman

In the quest to create a more secure environment, new ways to authenticate that replace the password are being sought. But it’s looking like passwords are here to stay.

New articles and templates from the Tech Content Team

Jun 4, 2019 12:07:44 PM By Stu Sjouwerman

Hi all, Here are all of the major items and updates our Technical Content Engineers have added to our knowledge base and KMSAT product in the last month.

CyberheistNews Vol 9 #23 [Heads-Up] Red Flags Warn of Social Engineering

Jun 4, 2019 9:51:08 AM By Stu Sjouwerman

It only takes three seconds...

May 31, 2019 11:44:23 AM By Stu Sjouwerman

“Statistics suggest the average human being falls for a social engineering attack about four times — with training — before they become ‘inoculated’ against that type of attack,” “Helpful ...

[Policy Template] Should Failing Phishing Tests Be A Fireable Offense?

May 31, 2019 8:00:00 AM By Stu Sjouwerman

Firing employees for failing phishing tests can be extremely counterproductive and can damage an organization’s overall security posture. That, at any rate, is what two security experts ...

"Delete" Notification as Office 365 Phishbait