Is Rakuten Button Canada: Get Cash Back for Shopping safe?

Rakuten Button Canada sends browsing session events and order confirmation page HTML to Rakuten servers on merchant sites.

On merchant sites where cashback is available, the extension logs session activity — including the current URL, user ID, session ID, and browser agent — to bl.ecbsn.com. When an order confirmation page is detected, the full HTML of that page is compressed and POSTed to capture.ecbsn.com along with the current URL, store details, and timing data. On Firefox, a consent prompt is shown before data collection begins; on other browsers, data collection is enabled by default.