> Continue using it till Mozilla shuts down Firefox add-ons can be installed from third-party sources as well, and in the case of uMatrix it's worth doing it a

> Continue using it till Mozilla shuts down Firefox add-ons can be installed from third-party sources as well, and in the case of uMatrix it's worth doing it anyway, since the latest version (1.4.1b6) is on GitHub only: https://github.com/gorhill/uMatrix/releases https://github.com/gorhill/uMatrix/releases It's a beta but seems to work just fine. Mozilla is still at the last stable version (1.4.0): https://addons.mozilla.org/en-US/firefox/addon/umatrix/ https://addons.mozilla.org/en-US/firefox/addon/umatrix/