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

New Phishing Campaign Angles for Monzo Banking Customers

A phishing campaign is targeting users of the UK-based digital banking company Monzo, BleepingComputer reports. Security researcher William Thomas came across an SMS phishing (smishing) ...

20 Year-Old “Right-to-Left Override” Functionality Used in Attacks to Trick Microsoft 365 Users Out of Credentials

Used to disguise malicious file extensions, this legacy functionality is being repurposed in attacks to obfuscate attachment types and steal credentials in an impressive way.

New QBot Attack Only Takes 30 Minutes to Elevate Privileges and Steal Data

This banking trojan-turned-information-stealer has been around for nearly 15 years. But its latest iteration – seen even in the past few weeks – has stepped up in its’ ability to act ...

Phishing Campaign Targets NFT Speculators

Scams follow fashion because money follows fashion. So it’s no surprise that non-fungible tokens (NFTs), which have become a hot speculative property, have drawn scam artists for phishing ...

[Heads Up] There Is A Whole New Type of Blockchain Scam Called "Ice phishing"

In a post Wednesday last week, Microsoft issued a warning that they are seeing a brand new type of blockchain-centric attack aimed at web3 -- a term used to describe the decentralized ...

Conti Ransomware Attacks Reap in $180 Million in 2021 as Average Ransomware Payments Rise by 34%

New analysis of ransomware attacks shows growth in the number of active strains, ransoms collected, and use of third-party services all adding up to a more organized and profitable ...

Coinbase’s QR Code Superbowl Ad Only Helps Normalize QR-Based Scams

Use of QR codes is becoming a mainstream part of advertising, but also is getting the attention of scammers intent on redirecting you to a malicious site they control.

Scammers Use a Mix of Stolen Credentials, Inbox Rules, and a Rogue Outlook Client Install to Phish Internal and External Victims

Organizations that are not using Microsoft’s multi-factor authentication are finding themselves victims of credential attacks that involve threat actors installing Outlook on a controlled ...

Phishing Attacks on Social Media Doubled Over 2021

Phishing attacks on social media doubled over the course of 2021, according to a new report from PhishLabs by HelpSystems. Most (68%) of these attacks targeted organizations in the ...

[On-Demand Webinar] Incredible Email Hacks You'd Never Expect and How You Can Stop Them

If you think the only way your network and devices can be compromised via email is phishing, think again!