Is Meta4 ClickOnce Launcher safe?

Clean risk

Meta4 ClickOnce Launcher forwards HTTP and HTTPS .application URLs to its native ClickOnce helper.

The extension watches HTTP and HTTPS navigation requests and checks whether the URL path ends in .application. When it matches, it sends the full URL to the local Meta4 ClickOnce native helper and redirects the original browser request to javascript:void().

Meta4 Spain S.A.v1.3.1Firefox Add-ons
3Risk

AI-generated. Findings may contain errors. Those marked Verified have been manually reviewed.

Publishers can request a review.

What it can do

Permissions this extension asks for, as declared in version 1.3.1. Asking for a permission is not a finding on its own - it is what the extension can do if it chooses to.

  • Read and change your data on every site you visit

    http://*/*

  • Read and change your data on every secure site you visit

    https://*/*

  • Watch every request your browser makes

    webRequest

  • Watch, block and rewrite every request your browser makes

    webRequestBlocking

  • Talk to a program installed on your computer, outside the browser's sandbox

    nativeMessaging

Where it sends data

Destinations our analysis observed Meta4 ClickOnce Launcher contacting. Sending data somewhere is not a finding on its own - an extension that syncs your settings has to talk to its own server - but it is where your data can go, and who else it goes to.

  • meta4.clickonce.clickoncehelper

    Meta4 ClickOnce Launcher sends data to meta4.clickonce.clickoncehelper. No other extension we have analysed sends data here.

Updated 30 September 2026amo-886247