Safeguard started in the browser with Chrome extensions. It is now available for Firefox and Safari too, so a team that standardizes on one browser, or splits across several, can use the same security lookups without switching.
This post covers what a browser extension is for, what you do with it, and where to get the current build for your browser.
What it is
A Safeguard browser extension puts security context next to the page you are already reading. You are on a package page, a pull request or a vendor site, and you want to know if there is a known problem without opening another tab and typing a query.
The Chrome extensions are the reference: a Safeguard side panel for asking Griffin questions, and a Gold Open Source extension for package lookups. Firefox and Safari users get the same kind of workflow in their own browser.
For current downloads and the browser versions supported, use the download page. Store listings and version numbers can change, so that page is the one to trust.
How to use it
- Open safeguard.sh/download and pick your browser.
- Install the extension and sign in with your Safeguard account.
- Browse as normal. When you land on a package or a dependency you do not know, ask Griffin about it from the extension.
You can also look the package up on Gold, which lists packages, CVEs with CISA KEV status, malicious packages and MCP servers. The extension is the shortcut to the same kind of answer.
If your organization wants to control which clients people use, tenant admins can switch off any client type, including the browser extension.
Why a second and third browser matters
Security guidance that only works in one browser gets ignored by everyone on the other two. Engineers on Firefox, designers and executives on Safari, and an IT team on Chrome all end up asking the same question about the same package. One answer in every browser means one habit.
Try it yourself
Pick a package you installed this week and look it up on Gold. Note whether it lists any CVEs, and whether any are flagged as known exploited. Then install the extension for your browser and see whether you reach the same answer faster from the page itself.
Quick check
Where do you find the current Firefox and Safari downloads?
On the Safeguard download page at safeguard.sh/download. Do not rely on a version number from a blog post.
