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

FBI Updates Initiative to Protect U.S. Elections from Cyberattacks

FBI has updated and expanded the resources and tools designed to help political campaigns, private businesses, and individuals to better understand and mitigate risks posed by foreign ...

CNN Says "Hack Our Reporter," and White Hat Rachel Tobac *Does*

It’s “disturbingly easy” to steal someone’s personal data using information gleaned from their social media accounts, according to Donie O’Sullivan at CNN. O’Sullivan met with Rachel ...

Credential Phishing With a Masked URL

Cofense warns of a phishing campaign going after credentials for the Stripe online payment platform. The attackers are sending emails purporting to be from Stripe Support, telling the ...

Q3 2019 Top-Clicked Phishing Email Subjects from KnowBe4 [INFOGRAPHIC]

KnowBe4 reports on the top-clicked phishing emails by subject lines each quarter in three different categories: subjects related to social media, general subjects, and 'In the Wild' - we ...

A New Strain of Tech Support Scam in the U.K.

The BBC reports a tech support scam that caused a British man, Doug Varey, to lose £4,000. The scam began when Mr. Varey saw an online ad for twelve years’ worth of computer security ...

Smishing and Carrier Impersonation

While most phishing campaigns involve email, SMS text messages are an ideal alternative for attackers, according to Paul Ducklin at Naked Security. Text messages are brief and uniform in ...

Shipping giant Pitney Bowes hit by ransomware

TechCrunch reported that shipping tech giant Pitney Bowes has confirmed a cyberattack on its systems.

Alexa and Google Home abused to eavesdrop and phish passwords

Ars Technica is on a roll lately with some very good articles! Here is another one that made me go "Yikes!"

Can An Employee's Bad Conscience Be A Vulnerability?

It can be useful to remember that social engineering succeeds much better when its marks are stressed or hurried. That appears to be the case with an ongoing scam campaign that lays its ...

KnowBe4 Wins ComputingSecurity Award: Education and Training Provider of the Year

We are extremely pleased to announce we won the ComputingSecurity Award for Education and Training Provider of the Year. Here is the team accepting the award.