KnowBe4 Blog

Keeping you informed. Keeping you aware.
Stay on top of the latest in human and agent security including social and prompt engineering, ransomware and phishing attacks.

Stu Sjouwerman

Founder and Executive Chairman

Stu Sjouwerman (pronounced “shower-man”) is the Founder and Executive Chairman 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.


Recent Posts

Your Users May Be Too Embarrassed to Report Email Scams

New research shows 25% of users falling victim to impersonation fraud were so ashamed they chose not to report it. Even worse, many don’t know how to spot the scam.

[ALERT] CEO Fraud Escalates. Bad Guys Now Go After Employee Personal Address And Phone Number

KnowBe4 is observing a serious escalation of CEO Fraud. They are now requesting street addresses and personal phone numbers of employees—an attempt to contact and manipulate employees ...

Cyber Attacks Cost German Industry Almost $50 Billion: Study

BERLIN (Reuters) – Two thirds of Germany’s manufacturers have been hit by cyber-crime attacks, costing industry in Europe’s largest economy some 43 billion euros ($50 billion), according ...

[VIDEO] Password Sharing Means Not Caring

How Fast Can Your Domain Admin Password Be Cracked? 19% of employees of small and medium-sized businesses (SMBs) share their passwords with coworkers, according to a study by Switchfast. ...

Want to Know How to Break into a Henhouse? Hire a Fox

Red teaming starts with research. So does social engineering. Red teaming is the practice of thinking and acting like an attacker to test an organization’s defenses, according to security ...

Details of North Korea Attacks Highlight Email’s Role in Attacks

When you think of cyber-espionage, you might be surprised it’s far less “Mission: Impossible” and a lot more basic phishing tactics.

Phishing Scammers are Planning Well into 2020

Cybercriminals are already looking to take advantage of the 2020 Tokyo Olympics. Are you thinking years out? The bad guys are.

New York State Universities Targeted by Phishing Scams

Students from Plattsburgh State and SUNY Adirondack were targeted by several types of scams over the summer, causing Plattsburgh State officials to send out warnings to the student body. ...

Phishing warning: One in every one hundred emails is now a hacking attempt

And just one mistake can compromise an entire organisation. Danny Palmer at ZDNet wrote: "One in every one hundred emails sent round the globe has malicious intent, likely to deliver ...

SCAM OF THE WEEK: "The Boss Needs iTunes Gift Cards For Customers... NOW"

If you ever wondered if those iTunes gift card phishes really work, see the below email exchange.

What is the secret to keeping your network safe? Training and automation

Just in time before October's Cybersecurity Awareness Month, DomainTools released its second annual Cybersecurity Report Card in which infosec pros were surveyed about their security ...

"Voice Phishing" in Korea This Year Already Exceeds 2017 Numbers.

The Korea JoonGang Daily reported that despite warnings from financial authorities, an average of 116 people fall victim to what is called "voice phishing" scams every day in Korea.

DMARC and Its Place in Email Security

Dealing with business email compromise (BEC) requires people, process, and technology. As we've noted before, the problem is growing. Harder to detect and evolving in sophistication, ...

Weaponized IQY Files Make Excel Users an Easy Target

The Necurs botnet – most notably responsible for distributing Locky – is now pushing weaponized internet or web query (.IQY) file to evade detection and download malware.

Only 40% of Business Phishing Scams Contain Links

This latest statistic takes the spotlight off of antivirus as the protector, and puts the focus squarely in the hands of your users to stop attacks.

When Russian InfoSec White Hats Go Black

This latest story about one specific cybercriminal group shows how even the most trusted of white-hats can give in to the lure of financial profit, following Evgeniy Bogachev who retired ...

You're Invited To Participate In The Inaugural 2018 Security Awareness Training Deployment Trends and Usage Survey.

KnowBe4 is running its Inaugural 2018 Security Awareness Training Deployment Trends and Usage Survey.

Finally, KnowBe4 Was Spoofed By Bad Guys. Expected That For Years.

When you become the worldwide No.1 player in your field with tens of thousands of organizations using your platform, you get on people's radar. Both the good guys and the bad apples.

Size Still Doesn’t Matter Especially When It Comes To CEO Fraud

Lloyds Bank says that Business Email Compromise (BEC)—also known as CEO Fraud—rose by 58% in the UK over the past year. While BEC is often associated by the media with large firms, ...

Campaign Email Security "as Bad as 2016"

The founder of Tech Solidarity, a not-for-profit interested in helping the campaigns of progressive Democrats, has been talking to those campaigns about their email security. He's found ...