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

Cyber Security Insurance: Underwriting Is Changing Because Of Billions Of Potential Exposure

Jun 19, 2018 10:22:58 AM By Stu Sjouwerman

Cybersecurity insurers, faced with growing demand, are looking for new ways to better measure their risks, says Aleksandr Yampolskiy, CEO of SecurityScorecard. So some are moving toward ...

Can Russian hackers be stopped? Here's why it might take 20 years (cover story PDF)

Jun 18, 2018 4:43:40 PM By Stu Sjouwerman

Here's some excellent ammo from TechRepublic for a long-term IT security budget proposal. For this TechRepublic cover story, their Editor in Chief EMEA Steve Ranger explains why deterring ...

Phishing Attacks Make Mortgage Wire Fraud Easier

Jun 18, 2018 1:30:06 PM By Stu Sjouwerman

The stress of obtaining a mortgage has just gotten worse, thanks to cybercriminals trying to con you out of your money. In new attacks targeting companies involved in the mortgage lending ...

CyberheistNews Vol 8 #25 [Heads-Up] Massive Downtime Caused by Bad Guys Killing Bank's 9,500+ Systems to Hide Stealing 10 Million Dollars via SWIFT

Jun 18, 2018 9:48:51 AM By Stu Sjouwerman

Vacation Dream Home Phishing Nightmare (but with a Happy Ending)

Jun 17, 2018 10:13:52 AM By Stu Sjouwerman

Mike Malone and his wife found the vacation condo of their dreams in Florida. They were in touch with a real estate agent who was handling the deal when suddenly their condo purchase ...

How Mature is Your Security Awareness?

Jun 16, 2018 12:20:02 PM By Stu Sjouwerman

Here at KnowBe4, we believe the greatest defense against security threats is an organization with a strong security culture – one that elevates an employee’s awareness around threats, ...

[Heads-up] Massive Downtime Caused By Bad Guys Killing Bank's 9,500+ Systems To Hide Stealing 10 Million Dollars Via SWIFT

Jun 16, 2018 11:25:35 AM By Stu Sjouwerman

A cyberattack against Banco De Chile (BDC)—that country's largest financial institution—bricked a hair-raising 9,000 workstations and 500 servers. However, killing these machines was ...

More than 70% of users prefer MFA over old style password / username

Jun 15, 2018 11:30:11 AM By Stu Sjouwerman

More than 70 percent of computer users will choose password-less multi-factor authentication (MFA) over traditional usernames and passwords, according to new behavior research. The ...

Finally, The Criminals Pay in CEO Fraud Scam

Jun 14, 2018 4:08:45 PM By Stu Sjouwerman

Some good news finally. It seems that the bad guys do get caught sometimes. In this case, 70 cybercriminals in the U.S. and Nigeria.

Looking for a Job? Beware of Recruitment Sites!

Jun 13, 2018 1:59:25 PM By Stu Sjouwerman

There’s yet another reason to not let your employees go looking for a new job on company time: cybercriminals are now leveraging recruitment sites.

New Global Research Underscores Continued Increase in Phishing Threats and Impact on Staff & Productivity

Jun 12, 2018 11:49:28 AM By Stu Sjouwerman

Barracuda today announced key findings from a new global research report. Here are the highlights:

New Study: 25% of employees use the same password for every account. AUGH!

Jun 11, 2018 2:16:48 PM By Stu Sjouwerman

Employees may be a company's greatest asset, but they also remain the greatest cyber security risk, according to a Monday report from OpenVPN.

CyberheistNews Vol 8 #24 Scam of the Week: Phishing Celebrity Deaths Kate Spade and Anthony Bourdain

Jun 11, 2018 9:58:30 AM By Stu Sjouwerman

Scam of The Week: Celebrity Deaths Kate Spade and Anthony Bourdain

Jun 9, 2018 10:10:56 AM By Stu Sjouwerman

Two celebrities committed suicide this week, and unfortunately that's going to be exploited by lowlife internet criminals in a variety of ways.

New Phishing Campaign Uses IQY Attachments to Bypass Antivirus And Installs RATs

Jun 8, 2018 2:34:04 PM By Stu Sjouwerman

A malicious spam campaign, distributed by the Necurs botnet, is using a new attachment type that is doing a good job in bypassing your antivirus and mail filters.

We Received A CEO Fraud Phishing Attack From Our Own Personal Accountants

Jun 7, 2018 7:22:41 AM By Stu Sjouwerman

This is an up-close and personal account of how my wife Rebecca and I (we hope) dodged a cybercrime bullet. You probably do not know that I am an elected official of the City of ...

Kate Spade Suicide Phishing Templates

Jun 6, 2018 7:31:17 PM By Stu Sjouwerman

This is another celebrity death which will spawn a raft of phishing and social media attacks. We recommend to inoculate your users before they make it through the filters.

CyberheistNews Vol 8 #23 [Heads-Up] Ransomware Insurance Expert: "Bad Guys Do More Damage Than They Used To."

Jun 4, 2018 9:49:43 AM By Stu Sjouwerman

Watch Out For World Cup Soccer Phishing Scams

Jun 2, 2018 3:12:14 PM By Stu Sjouwerman

The 2018 FIFA World Cup has drawn a worldwide audience. It's also attracted phishing scams using event tickets as bait. Tickets for the matches can only be purchased legitimately through ...

[Heads-up] Ransomware Insurance Expert: "Bad Guys Do More Damage Than They Used To"

Jun 2, 2018 8:28:49 AM By Stu Sjouwerman

The ransomware plague is not letting up and rapidly getting more technically sophisticated. New strains are popping up every month, using innovative methods to spread. Worse, the ransom ...

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