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

NSA Warns Against Using Third-Party DNS and Encourages DNS Over HTTPS

As cybercriminals look for new ways to attack organizations, the National Security Agency takes a hard look at how DNS can be manipulated and makes recommendations on how to secure it.

Australians Experienced over 200K Scams in 2020 Costing Over A$176 Million

New data from the Australian government’s Scamwatch site shows that phishing and vishing topped the list of scam types used to trick Australians into becoming a scam’s next victim.

UK Insurer Defends the Coverage of Ransomware Payments

Despite the U.K. government’s position that organizations should not make ransomware payments, the Association of British Insurers (ABI) includes payments in first-party cyber-insurance ...

A UK Case Study: Recognizing COVID-19 Phishing

A phishing campaign is using convincingly spoofed offers for COVID-19 vaccination sign-ups, according to Tom Allen at Computing. As vaccines are now being distributed around the world, ...

Microsoft: "Congrats KnowBe4 On being One Of The Top Apps In 2020"

Natee Pretikul, Senior Program Manager in Microsoft's Identity Engineering Strategic Alliances team just send us the following:

Confident About Detecting Spoofed, Scam Emails?

A survey by ESET found that most people think they’d be able to identify scam emails while shopping online. 87% of respondents said they felt secure while shopping online, while 73% ...

CISA's New Anti-Ransomware Campaign

The US Cybersecurity and Infrastructure Security Agency is launching a campaign to raise awareness of the ways organizations can defend themselves against ransomware attacks.

KnowBe4 Unveils Official Trailer for ‘The Inside Man’ Season 3

We’re excited to announce the official trailer for Season 3 of the award-winning KnowBe4 Original Series - ‘The Inside Man’ is now available! KnowBe4’s network-quality video training ...

Thousands of Stolen Credentials Accessible via Google Search as Cybercriminals Accidentally Make Them Public

A publishing goof by cybercriminals on a WordPress site made files containing stolen passwords indexable by Google and were subsequently publicly available via search.