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

New Sleeper Strain of SamSam Ransomware Bypasses AV And Stays Hidden On Your Network

Jun 23, 2018 11:49:27 AM By Stu Sjouwerman

The ransomware strain that crippled several cities and school districts in the U.S. earlier this year is back with more tricks up its sleeve to avoid detection. If you haven’t heard of ...

Penalty! Another FIFA World Cup Phishing Scam Found

Jun 21, 2018 1:42:15 PM By Stu Sjouwerman

As we round out the second week of the FIFA World Cup, new phishing scams continue to permeate, seeking to take advantage of fan’s interest and excitement.

It Saves Your Battery, But Its Social Engineering Steals Your Data

Jun 21, 2018 1:39:51 PM By Stu Sjouwerman

Google Play is a walled garden, but the serpents do find their way in. RiskIQ has found one snake with a tempting offer on its forked tongue: an app that "saves the battery" in your ...

[ALERT] There Is A New Hybrid Cyber Attack On Banks And Credit Unions In The Wild

Jun 20, 2018 5:02:53 PM By Stu Sjouwerman

A customer just called me. He found a new strain of attack that's the next scary thing your organization may become the target of.

Banking Still a Major Target of Cybercrime

Jun 20, 2018 11:45:31 AM By Stu Sjouwerman

1950’s bank robber Willie Sutton was once—erroneously—quoted as saying “I rob banks because that’s where the money is.” Sutton never said it, a reporter made up the quote. However, cyber ...

Why Preventing Social Engineering Isn’t Enough

Jun 20, 2018 11:40:05 AM By Stu Sjouwerman

The heightened state of cyber attacks in recent years has put a lot of focus on preventing those attacks from being successful. But, organizations can’t simply rely on defensive ...

Even Law Firms Suffer from Social Engineering

Jun 19, 2018 1:23:17 PM By Stu Sjouwerman

They may not fall for an advance fee scam from an emailer claiming to be the widow of a Nigerian prince, but law firms have their issues with social engineering, too.

What Is Angler Phishing And How Do I Avoid Becoming A Victim?

Jun 19, 2018 1:06:12 PM By Stu Sjouwerman

Experian in an ongoing campaign to clean up their massive hack came out with a useful post: What is Angler Phishing? Angler phishing is the practice of masquerading as a customer service ...

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 ...

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Stu Sjouwerman

Books

Recent Posts

New Sleeper Strain of SamSam Ransomware Bypasses AV And Stays Hidden On Your Network

Penalty! Another FIFA World Cup Phishing Scam Found

It Saves Your Battery, But Its Social Engineering Steals Your Data

[ALERT] There Is A New Hybrid Cyber Attack On Banks And Credit Unions In The Wild

Banking Still a Major Target of Cybercrime

Why Preventing Social Engineering Isn’t Enough

Even Law Firms Suffer from Social Engineering

What Is Angler Phishing And How Do I Avoid Becoming A Victim?

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

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

Phishing Attacks Make Mortgage Wire Fraud Easier

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

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

How Mature is Your Security Awareness?

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

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

Finally, The Criminals Pay in CEO Fraud Scam

Looking for a Job? Beware of Recruitment Sites!

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

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

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