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

Remote Work Isn’t Good for Corporate Security (Part 2): 30% of Organizations Have Been the Victim of Phishing Scams Since the Lockdown

Lots of new data is now just coming out of the woodwork demonstrating some of the harsh realities of having employees work from home without proper security in place.

Remote Work Isn’t Good for Corporate Security (Part 1): 6 in 10 Employee’s Online Accounts Have Been Compromised Since Working Remotely

Working from home has its advantages. But, according to new data, one of them isn’t keeping the organization secure.

COVID-19 Tax Refund Phishing Attacks Offering Fake U.K. Government Grants

Researchers at Forcepoint describe an unusual phishing attempt that purported to come from the UK’s tax office, HM Revenue and Customs (HMRC). The email itself was clearly a phishing ...

Ransomware Gangs Team Up To Form Extortion Cartel

Today, BleepingComputer was told by cyber intelligence firm KeLa that the Maze operators added the information and files for an international architectural firm to their data leak site.

[Heads Up] The REvil Ransomware Gang Is Now *Auctioning Off* Their Victim Data

Intrepid investigative Reporter Brian Krebs had the news first. "The criminal group behind the REvil ransomware enterprise has begun auctioning off sensitive data stolen from companies ...

Phishing for Supermarket Deliveries

Scammers are exploiting the increased demand for online shopping by setting up spoofed supermarket websites, Teiss reports. Researchers at Mimecast recently found thirty websites ...

The Latest Ransomware Attacks Can Require a Data Breach Notification

Ransomware variants shifting tactics to include extortion may be cause for organizations to treat them as data breaches and, therefore, quickly notify affected parties.

Human Performance as a Risk Factor

Most organizations don’t place enough focus on the human elements of cybersecurity, according to Stephen A. Wilson, Dean Hamilton, and Scott Stallbaum from consulting firm Wilson Perumal ...

Supreme Court “Summons” is the Latest Phishing Attack Aimed at Stealing Your Microsoft 365 Credentials

Even the Supreme Court isn’t safe from brand impersonation in this scam intent on getting victims to click on a link to a supposed subpoena to attend a hearing.