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

[HEADS UP] Cybercriminals Attempt to Exploit Stimulus Package for COVID-19

In several recent blog posts we've showed you the myriad ways in which malicious actors have aggressively -- even ruthlessly -- deployed social engineering tactics to leverage the ...

FBI Warns of Stimulus Check Scams

The FBI's Internet Crime Complaint Center (IC3) issued an alert warning of coronavirus-related phishing attacks, particularly surrounding economic stimulus checks. The news that the US ...

Beware! The FCC Releases Audio Samples of Coronavirus Phone Scams

Scammers sink to a new low with these phone scams preying on the fears of U.S. citizens offering hopes of better protecting themselves from the Coronavirus.

[PLATFORM UPDATE] COVID-19 New Templates Categories

This Friday March 27, at 9 a.m. Eastern, we will add two new categories of email templates related to Coronavirus/COVID-19. At this time, we will move all of our existing ...

Sitting Ducks: When Employees Work from Home

As the COVID-19 health crisis rages on and millions of workers and students move to working from home (WFH) and online distance education, no one should make the error of thinking that ...

Ransomware Incidents Increase 131 Percent with the SMB Being the Primary Target

The recent release of new data from U.K. cyberinsurer Beazley’s brings to light what kinds of attacks their customers are experiencing and who’s at risk.

Sextortion Scam Combines Lust and Envy

A sleazy phishing campaign is trying to tempt people into opening an attachment that supposedly contains nude pictures of a friend’s girlfriend, BleepingComputer reports. The attackers ...

Brand Impersonation Phishing Attacks Grow While Organizations Fail to Protect Their Brand Using DMARC

New data from Security vendor Agari shows how identity deception techniques are being used to fool recipient victims as organizations lack the needed safeguards to ensure emails are ...

An Intimate Look at a Nigerian Social Engineer

Researchers at Check Point offer a look at a Nigerian citizen who moonlights as a cybercriminal who uses social engineering techniques. The man, whom the researchers call “Dton,” ...