Authored by: Bryan Lachapelle, President & CEO
You may have seen recent headlines about Notepad++. Here’s what actually happened - and why it matters to your business.
At first glance, the Notepad++ news might look like “just another software security issue". Words like "attack", "malicious actors" and "compromise" are thrown around, but when we step back and look at what actually happened, this incident tells a much bigger story for businesses of all sizes. Just know that this was not a failure of Notepad++. It was a supply chain attack, and it highlights a growing risk that every organization needs to understand.
Between December and early February, the Notepad++ team released routine updates that included bug fixes and security improvements. Then, on February 2nd, 2026, Notepad++ published an important update explaining the real issue:
Attackers didn’t break into Notepad++. They broke into the system that delivered the software.
Instead of attacking the software itself, the hackers attacked the company that hosted the download files. From there, they were able to replace some installer downloads with harmful versions (without anyone's knowledge) - but only for specific targets.
This attack was not aimed at home users. The evidence strongly suggests the attackers were trying to reach businesses, enterprises, government organizations, and high-value targets. In other words, organizations that rely on trusted software to run their operations.
What makes this especially concerning is that the software was legitimate, the vendor was trusted, and nothing looked suspicious during installation. Supply chain attacks take advantage of trust and is why they are so effective.
A supply chain attack doesn’t go after you directly. Instead, attackers:
- Target companies you already trust
- Compromise the tools or services you rely on
- Wait for the access to come to them
In this case, the software wasn’t the weak point - the delivery process was. This is something many businesses overlook.
There are a few key things that businesses should take away from this incident:
1. Trusted Software Can Still Be a Risk: using well-known tools doesn’t eliminate risk. These attackers know which software businesses trust and they plan around that.
2. Not All Attacks Are Obvious: there were no pop-ups, no warnings, and no clear signs something was wrong. Many modern attacks are designed to fly under the radar for as long as possible.
3. Vendor Transparency Matters: Notepad++ handled this responsibly by communicating clearly and quickly once they had the full picture. That level of transparency is something businesses expect from all vendors.
At B4 Networks, one of our roles is to look beyond individual tools and focus on how everything fits together. Some of our best work comes from:
- Controlling where software comes from
- Limiting who can install applications
- Proactively monitoring for unusual activity, even when trusted tools are involved
- Evaluating vendor and supply chain risks - not just features and pricing
Supply chain attacks are becoming more common because they work. The good news is that businesses like yours don’t have to tackle this alone.
So, what should you do now? First, make sure Notepad++ is updated to the latest version. Beyond that, this becomes a policy and awareness issue across your organization. Review how software is approved and installed, confirm that your vendors are handling updates and data securely, and make sure employees know what suspicious behaviour can look like even when it involves tools they already trust.
The Notepad++ incident isn’t about one piece of software, but a reminder that today’s threats are smarter, quieter, and more strategic. Security is no longer just about protecting your systems - it’s about protecting who and what you trust.
If you’re not sure how exposed your business might be, that’s exactly the kind of conversation we are here to have. Book a call with us today to ensure your systems are locked down.
