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

Phishing Attacks Exploit Microsoft Visio Files and SharePoint

Threat actors are exploiting Microsoft Visio files and SharePoint to launch two-step phishing attacks, according to researchers at Perception Point.

Half of all Ransomware Attacks This Year Targeted Small Businesses

New data shows just how crippling ransomware has been on small businesses that have fallen victim to an attack and needed to pay the ransom.

[World Premiere] KnowBe4 Debuts New Season 6 of Netflix-Style Security Awareness Video Series - “The Inside Man”

We’re thrilled to announce the long-awaited sixth season of the award-winning KnowBe4 Original Series - “The Inside Man” is now available in the KnowBe4 ModStore!

Criminal Threat Actor Uses Stolen Invoices to Distribute Malware

Researchers at IBM X-Force are tracking a phishing campaign by the criminal threat actor “Hive0145” that’s using stolen invoice notifications to trick users into installing malware.

Nation-State Threat Actors Rely on Social Engineering First

A new report from ESET has found that most nation-state threat actors rely on spear phishing as a primary initial access technique.

[FREE RESOURCE KIT] Stay Cyber Safe this Holiday Season with Our Free 2024 Resource Kit!

Isn’t it typical for bad actors to strike when we’re distracted and busy during this time of year?

Criminals Use Search Engine Poisoning to Boost Phishing Pages

Researchers at Malwarebytes warn that cybercriminals are using search engine poisoning to boost phishing pages to the top of Bing’s search results.

Recon 2.0: AI-Driven OSINT in the Hands of Cybercriminals

Cybercriminals are using artificial intelligence (AI) and generative AI in open source intelligence (OSINT) activities to target your organization with supercharged reconnaissance efforts.

[Eye Opener] Attackers Don’t Hack, They Log In. Can You Stop Them?

The latest trend in cybercrime is that attackers don't really focus on “hacking” in; they’re logging in.

Phishing Campaign Impersonates OpenAI To Collect Financial Data

Cybercriminals are impersonating OpenAI in a widespread phishing campaign designed to trick users into handing over financial information. The emails inform users that a payment for their ...