Is RT-Booster｜楽天RMS作業効率化ツール safe?

RT-Booster removes frame-blocking headers from all Rakuten pages so it can show them in its side-panel phone view.

The extension installs a browser-wide rule that strips the X-Frame-Options and Content-Security-Policy headers from every Rakuten (rakuten.co.jp and rakuten.ne.jp) frame response, and sets an iPhone user-agent on those requests. This supports the side-panel smartphone preview, but the rule applies in all tabs, so any website can embed Rakuten pages, including logged-in account pages, without those protections.

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