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

U.S. Government Stresses the Need for Cybersecurity Awareness and Education in Light of Ransomware Attacks on Government Entities

In light of the recent string of attacks that seem to be targeting government agencies and municipalities, a new multi-agency press release provides guidance on how to be resilient.

Game Phishing Scams Steal Steam Accounts

A phishing scam is stealing Steam accounts by promising free games to victims if they log in to a website with their Steam credentials, according to a recent post by BleepingComputer.

[On-Demand Webinar] How to Prevent 81% of Phishing Attacks With DMARC

Only ~20% of companies use DMARC, SPF, and DKIM, global anti-domain-spoofing standards, which could significantly cut down on phishing attacks. But even when they are enabled and your ...

Blank Emails Come Before BEC Fraud Attack

Business email compromise (or CEO fraud) has its reconnaissance phase, too. Researchers at Agari say they’ve found that blank, unsolicited emails are often an early sign that a BEC gang ...

The Wall Street Journal Just Published An Interview with Kevin Mitnick, KnowBe4's Chief Hacking Officer

August 16, 2019 - Randy Maniloff wrote about Kevin in the WSJ "Weekend Interview". It's a great article that covers his start as a teenage hacker, how he wound up in jail, and how he ...

Are Local Government and Municipalities Part of a Coordinated Attack on the U.S.?

There are too many ransomware attacks to ignore the similarities. It’s either government networks are easy prey, or someone is trying to cash out on the U.S., one attack at a time.

Social Engineering Testing is Necessary to Fend off Phishing Attacks

The success of social engineering as part of phishing and spear phishing attacks has caused organizations to realize they need an effective tactic to make employees vigilant.

The Unusual Activity Would be the Warning Itself

BleepingComputer has come across a phishing campaign that’s spoofing “Unusual sign-in” warnings from Microsoft to steal users’ credentials. The emails look nearly identical to Microsoft’s ...

Even when your users don't click...

...they can still be helping the bad guys compromise your organization. Sad but true.

Report: Data Breach in Biometric Security Platform Affecting Millions of Users

Led by internet privacy researchers Noam Rotem and Ran Locar, vpnMentor’s team recently discovered a huge data breach in biometrics security platform BioStar 2. Once stolen, fingerprint ...