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

Blind Eagle Goes Phishing

BlackBerry has published a report on a threat actor, Blind Eagle, also known as APT-C-36, which has been operating against targets in Ecuador and Colombia since at least 2019. Its most ...

CyberheistNews Vol 13 #09 [Eye Opener] Should You Click on Unsubscribe?

CyberheistNews Vol 13 #09 | February 28th, 2023 [Eye Opener] Should You Click on Unsubscribe? By Roger A. Grimes. Some common questions we get are "Should I click on an unwanted email's ...

Thousands of NPM Packages Used to Spread Phishing Links

Researchers at Checkmarx warn that attackers uploaded more than 15,000 packages to NPM, the open-source repository for JavaScript packages, to distribute phishing links. The packages ...

Malware Report: The Number of Unique Phishing Emails in Q4 Rose by 36%

With nearly 280 million phishing emails detected by just one vendor, and the increase in the number of unique emails, organizations have a lot to be worried about in 2023.

W-2s Are Just the Beginning of Tax-Related Scams This Year

Email scammers can’t pass up a tried and true theme that is almost guaranteed to produce results. And with W-2 forms being sent out, it marks the start of this year’s expected campaigns.

Ransomware Attacks Using Extortion Tactics Reaches Critical Mass at 96% of all Attacks

New cyber attack data from 2022 is providing insight into what to expect in 2023, including ransomware campaigns.

28% of Users Open BEC Emails as BEC Attack Volume Skyrockets by 178%

New data shows users aren’t scrutinizing emails used in business email compromise (BEC) attacks, allowing critical changes in banking details that would impact the victim's organization ...

Coinbase Attack Used Social Engineering

Coinbase describes a targeted social engineering attack that led to the theft of some employee data. The attacker first sent smishing messages to several Coinbase employees, urging them ...

A Special Case of Business Email Compromise

Cloudflare warns that business email compromise (BEC) phishing has assumed a new form: vendor email compromise (VEC). The classic BEC case involves the impersonation of someone within an ...

Corporate Transitions Represent Times of Heightened Danger

When should organizations be on guard against social engineering? Always, of course, but there are certain times when they should be especially alert. A study of cyberattacks has found ...