Is U4U Cashback safe?

Clean risk

U4U Cashback redirects merchant pages through u4b.ru/r/ when you activate cashback.

When its cashback banner is shown for a supported store, clicking the activation control reads the active tab URL and navigates the tab through u4b.ru/r/ with that URL encoded in the request. During the redirect chain, the extension also tracks the redirect URL and rewrites the Referer header for affiliate attribution.

2Risk

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 2.0.1. 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

    *://*/*

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

    tabs

  • Store data in your browser

    storage

  • Watch every request your browser makes

    webRequest

Where it sends data

Destinations our analysis observed U4U 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.

  • u4b.ru

    U4U Cashback sends data to u4b.ru. No other extension we have analysed sends data here.

Updated 30 September 2026gehpcmgffmioghpbkmgfpcaldchnaefk