Supply Chain Attacks: The Threat Hiding in Your Dependencies
Most small business owners think of a cyberattack as something direct: a phishing email, a password stolen, a door kicked in. Supply chain attacks work differently. They slip in through the software your team already trusts.
Two recent examples make this concrete. The mini Shai-Hulud attack targeted a widely used open-source package, injecting malicious code that was pulled silently into thousands of downstream projects the moment developers updated their dependencies. The axios incident followed a similar pattern, where a compromised version of a popular JavaScript library was briefly published to a public package registry before being caught. In both cases, developers did nothing wrong. They updated their tools, as they should. The attack was already waiting inside the update.
What a Supply Chain Attack Actually Is
A supply chain attack targets the tools, libraries, or services your software depends on, rather than your application directly. In plain terms: instead of attacking you, someone attacks a component you rely on, and you carry the malicious code into your own environment without knowing it.
For small businesses, this matters even if you are not writing custom software. If your website runs on a platform with plugins, if your team uses third-party integrations, or if a developer anywhere in your vendor chain manages code on your behalf, you have a software supply chain. And that chain has exposure.
How AI Has Changed the Attack Surface
Attackers are now using AI to increase the volume and polish of malicious packages in public registries. One technique to know is typosquatting: publishing a package with a name that closely mimics a legitimate library, like axois instead of axios, or reqeusts instead of requests, and waiting for a developer to mistype a dependency name. AI lowers the cost of doing this at scale, generating plausible package names, writing cleaner code that is harder to flag on inspection, and automating publication across multiple registries.
The practical effect is more credible-looking traps in the same places developers already go to get work done. The packages look legitimate. The behavior is hidden. And the volume has grown.
What You Can Do About It
Not every recommendation below applies to every business. If you have a development team, all of these are relevant. If you use a website platform with plugins or third-party integrations but do not write code, start with the audit and the vendor question. The point is to know what is running in your environment and where it comes from.
Set a minimum age threshold on dependency updates. Do not pull in a package the day it is published. Malicious packages are often identified and removed quickly once the community spots them, but that window of exposure is real. Configuring your tooling to require a dependency be at least seven to fourteen days old before it enters your project gives the community time to catch problems before they reach you. Most package managers support this kind of policy.
Audit your environment regularly. For development-focused teams, this means reviewing your installed packages, your .env files (local configuration files that store credentials and API keys), and anything in your stack that changed without a clear reason. For businesses without in-house developers, the equivalent is a periodic review of your active plugins, third-party integrations, and the vendors who have access to your systems. Look for anything unfamiliar. Look for credentials or access that should have been revoked. Starting with a twice-yearly review is reasonable and builds the habit.
Use CI/CD workflows for dependency and code review. CI/CD stands for continuous integration and continuous delivery: the automated pipelines that build and test your software before it ships. If you have a development team, embedding automated dependency scanning into that pipeline means every code change is checked against known vulnerabilities before it reaches your environment. If you do not have in-house development, ask your software vendors whether they follow this practice. Their answer tells you something about how seriously they take their own security.
Add third-party dependency intelligence. Tools like Socket.dev analyze open-source packages for suspicious behavior before you install them. Rather than simply checking a package against a list of known vulnerabilities, Socket looks at what the package actually does: does it reach out to the network unexpectedly, does it access files it has no reason to touch, does something in the code look designed to exfiltrate data? It integrates directly into common development workflows and is worth evaluating if your team manages code dependencies. The right tool depends on your stack, and a brief conversation with an advisor can help you match the tooling to what you actually use.
The Bigger Picture
You are not going to eliminate supply chain risk entirely. No one can. What you can do is reduce your exposure, slow down the attacker's ability to move undetected, and build the kind of review process that catches problems before they cause real damage.
These are not solutions that require a full security team. They are disciplined habits. And like most things in security, the value comes from doing them consistently, not perfectly.
If you want help reviewing your current environment or building these checks into your existing workflows, that is exactly the kind of work we do at Phylaxion. Reach out and let's take a look together.