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

WSJ: "Cyber Insurance Went Up A Whopping 92% In 2021"

May 18, 2022 8:45:08 AM By Stu Sjouwerman

Whoa Nellie, that's getting to be real money here. This is the kind of thing that starts cutting into your whole IT budget.

Spear Phishing a Diplomat

May 17, 2022 9:30:09 AM By Stu Sjouwerman

Researchers at Fortinet observed a spear phishing attack that targeted a Jordanian diplomat late last month. The researchers attribute this attack to the Iranian state-sponsored threat ...

CyberheistNews Vol 12 #20 [Heads Up] Now You Need to Watch Out for Spoofed Vanity URLs...

May 17, 2022 9:22:53 AM By Stu Sjouwerman

Why People Fall for Scams

May 16, 2022 1:51:27 PM By Stu Sjouwerman

Scammers use a variety of tried-and-true tactics to trick people, according to André Lameiras at ESET. For example, they can easily find open-source information about people on the ...

Think BEC Won’t Cost You Much? How Does $130 Million Sound?

May 13, 2022 8:05:12 AM By Stu Sjouwerman

A new lawsuit brings to light the all-too common occurrence of an attack, with this occurring during a business acquisition and costing the buyer more than they bargained for.

Homeland Security: U.S. Ransomware Attacks Have Doubled in the Last Year

May 13, 2022 8:04:41 AM By Stu Sjouwerman

A March 2022 report from the Senate Committee on Homeland Security and Governmental Affairs zeros in on the growing problem of ransomware and lessons learned so far.

Trezor Crypto Wallet Attacks Results in Class Action Lawsuit Against MailChimp Owner Intuit

May 12, 2022 12:23:17 PM By Stu Sjouwerman

Months after the MailChimp data breach targeting 102 companies in the crypto sector, a new lawsuit has been filed seeking millions of dollars in damages.

Happy Credit Union Customers Become the Target of Spoofing Scams Due to a Lack of Email Security

May 12, 2022 12:22:16 PM By Stu Sjouwerman

Taking advantage of heightened levels of customer trust and satisfaction, along with lowered levels of properly implemented security, credit unions are seeing a rise in email-based scams.

European Wind-Energy Sector Is the Latest Target of Russian State-Sponsored Attacks

May 12, 2022 12:21:37 PM By Stu Sjouwerman

While Russia consistently denies any launching of cyberattacks, attack details point to reasonable intent by and cybercriminal ties to the Russian government.

Beware of Spoofed Vanity URLs

May 12, 2022 8:58:50 AM By Stu Sjouwerman

Researchers at Varonis warn that attackers are using customizable URLs (also known as vanity URLS) on SaaS services to craft more convincing phishing links. The attackers have used this ...

KnowBe4 Earns 2022 Top Rated Award from TrustRadius

May 11, 2022 9:47:43 AM By Stu Sjouwerman

We are proud to announce that TrustRadius has recognized KnowBe4 with a 2022 Top Rated Award.

Another Report of SEO in Phishing

May 11, 2022 8:56:12 AM By Stu Sjouwerman

Researchers at Netskope have observed a 450% increase in phishing downloads over the past twelve months, largely driven by attackers using SEO (search engine optimization) to improve the ...

Mustang Panda Uses Spear Phishing to Conduct Cyberespionage

May 10, 2022 9:49:56 AM By Stu Sjouwerman

The China-based threat actor Mustang Panda is conducting spear phishing campaigns against organizations in NATO countries and Russia, as well as entities in the US and Asia, according to ...

CyberheistNews Vol 12 #19 [Heads Up] There is a New Type of Phishing Campaign Using Simple Email Templates

May 10, 2022 9:38:48 AM By Stu Sjouwerman

Tricky SMTP Relay Email Spoofing. Man Convicted For 23M Phishing Scam. Email not displaying? | View Knowbe4 Blog CyberheistNews Vol 12 #19 | May 10th, 2022 [Heads Up] There is a New Type ...

Wave of Crypto Muggings Hits London's Financial District

May 9, 2022 10:29:12 AM By Stu Sjouwerman

Criminals in London are targeting digital currency investors on the street in a wave of “crypto muggings”, with victims reporting that thousands of pounds were stolen from their crypto ...

Business Email Compromise Shouldn’t Be the Cost of Doing Business

May 9, 2022 9:11:25 AM By Stu Sjouwerman

The FBI last week published a public service announcement updating its warnings about the continuing threat of business email compromise (BEC, also called CEO fraud). The problem has ...

10 of the Craziest Cyberattacks Seen In the Wild and How You Can Avoid Them

May 6, 2022 12:46:44 PM By Stu Sjouwerman

It feels like we hear about a new devastating cyberattack in the news every day. And attack methods seem to be proliferating at an exponential rate. So, which tactics should you be aware ...

Your KnowBe4 Fresh Content Updates from April 2022

May 6, 2022 8:00:00 AM By Stu Sjouwerman

Check out the 67 new pieces of training content added in April, alongside the always fresh content update highlights and new features.

Cozy Bear Goes Typosquatting

May 5, 2022 9:08:59 AM By Stu Sjouwerman

Researchers at Recorded Future’s Insikt Group warn that the Russian threat actor NOBELIUM (also known as APT29 or Cozy Bear) is using typosquatting domains to target the news and media ...

Microsoft is Leading the Way to a Password-Less Future

May 5, 2022 9:08:33 AM By Stu Sjouwerman

As we observe World Password Day to create awareness around the need for password security, Microsoft is looking for frictionless ways to eliminate passwords entirely.

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