Is Megabonus - cash back up to 40% safe?

Low risk

Megabonus - cash back up to 40% sends shopping-page analytics labels and its extension UUID to Google Analytics.

On supported marketplace pages, the extension records similar-items analytics after the page has loaded. The event sent to Google Analytics includes the extension's stored UUID as the client ID and labels derived from cashback or affiliate state plus the product-page URL without its query string.

Part of this rating comes from analysis signals we haven't published as detailed findings yet.

Megabonusv3.4.24Firefox Add-ons
21Risk
Who publishes it

Megabonus - no other listings under this identity, 8 shared hostnames

What this publisher told the store about itself, and the other listings that told it the same thing.

Publisher
Megabonus

Shared hosts - 8 hostnames

Hostnames hardcoded in this extension that few other listings call. That can mean one operator behind both, and it can equally mean a small shared vendor, so it is context rather than a conclusion. Hosts that many listings call are left out: they are services, not connections.

apiweb.devmegabonus.com
Also called by 1 other listing: Megabonus
book24.ru
Also called by 2 other listings, including Megabonus
help-es.megabonus.com
Also called by 2 other listings, including Megabonus
identical-products.wildberries.ru
Also called by 2 other listings, including Megabonus
help-en.megabonus.com
Also called by 3 other listings
help-ru.megabonus.com
Also called by 3 other listings
cdn.megabonus.com
Also called by 4 other listings
megabonus.com
Also called by 4 other listings

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 3.4.24. 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://*/*

  • Read and change cookies, including the ones that keep you signed in

    cookies

  • Show you desktop notifications

    notifications

  • Watch every request your browser makes

    webRequest

  • See the address and title of every tab you have open

    tabs

  • Store data in your browser

    storage

Where it sends data

Destinations our analysis observed megabonus_cashback 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.

  • www.google-analytics.comwidely used

    megabonus_cashback sends data to www.google-analytics.com. A widely used service: 346 other extensions we have analysed send data here.

Updated 30 September 2026amo-711585