Browser add-ons often have a reputation for being "small"—a quick install for a tiny productivity boost. In reality, a browser extension is more like a micro-vendor sitting inside your browser session. It can see what you see, interact with your pages, and often access the same cloud apps your business runs on. This is why a security check matters. It isn’t about blocking every add-on; it’s about ensuring one over-privileged update doesn’t turn a "helpful helper" into a major data leak.
Extensions live where your staff work all day. Because they are granted "special authorisations," they can often read and modify everything in a browser tab—capturing form data, viewing browsing history, or accessing sensitive cloud tools. The risk is twofold: permissions overreach (asking for more data than required) and change over time (a safe extension today can be sold to a malicious developer tomorrow).
Use this repeatable process to vet extensions without creating an IT bottleneck:
If you wouldn't give a random supplier access to your customer records, don't give a random extension access to your browser.
The store listing should be a mini-disclosure. It must clearly explain what the tool does and exactly why it needs specific data. Look out for any mention of "analytics" or "data sharing" that doesn't match the core feature.
This is the most critical step. Microsoft and Google both state that extensions must only request permissions essential for their function.
Extensions update automatically. If an add-on suddenly requests new, broader permissions, treat it with suspicion. It is often safer to uninstall the tool than to grant unexplained access.
Unvetted extensions are a hidden vulnerability. By standardising how your team installs them, you turn impulse decisions into clear security standards. Focus on reducing extension sprawl, treating permission changes as red flags, and using browser-level controls to enforce safety by default. Contact us today

























