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

81% of Underwriters Expect Cyber Insurance Premiums to Increase as Risk is Expected to Soar

New data from cyber insurance underwriters shows what they think the biggest threats will be in 2024 and what organizations should do about it.

Associated Press: "Grave peril of digital conspiracy theories."

The AP published a great article. This is your executive summary: Conspiracy theories have always been part of American culture, but advanced technology is making them more persuasive and ...

Ransomware Payments On The Decline As Cyber Attackers Focus on The Smallest, And Largest, Organizations

New data for Q4 of 2023 reveals a sizable shift in the cyber threat landscape, with serious implications regarding ransomware and social engineering attacks targeting both the largest and ...

FBI Cyber Alert: Tech Support Scams Steal Cash or Precious Metals

The US Federal Bureau of Investigation (FBI) has issued an alert that scammers are tricking victims into converting their savings into cash or precious metals, then sending couriers to ...

The Percentage of Organizations Globally Struck by Ransomware Hits an All-Time High

Check Point’s review of ransomware shows that the percent of organizations worldwide hit by this greatest of cyberthreats rose by a whopping 33% in 2023.

Open Redirects Used to Disguise Phishing Links

Phishing attacks are increasingly using open redirects to evade detection by security filters, according to researchers at Trustwave.

Forget Deepfake Audio and Video. Now There’s AI-Based Handwriting!

Researchers have developed AI technology that can mimic someone’s handwriting with only a few paragraphs of written content. Experts worry about the possibility of misuse.

Malvertising Targets Chinese-Speaking Users

Researchers at Malwarebytes warn that a malvertising campaign is targeting Chinese-speaking users with phony ads for encrypted messaging apps. The ads impersonate apps that are restricted ...

Identify Weak User Passwords With KnowBe4’s Enhanced Weak Password Test

Passwords are part of every organization’s security risk profile. Just one weak password with access to an organization’s critical systems can cause a breach, take down a network or ...

Scammers Use Airdrops to Lure Users With Phony NFTs

Researchers at Check Point warn that scammers are using airdrops to distribute phony non-fungible tokens (NFTs) that direct users to malicious sites.