> I don't think stores provide any security guarantee anyway, anything you can do with an app installed outside the store, you can also do it with an app inside

> I don't think stores provide any security guarantee anyway, anything you can do with an app installed outside the store, you can also do it with an app inside the store. The security is provided by the sandboxing capabilities and the permissions, not the store. In Firefox's case they also have a "Recommended Extensions Program" with more thorough security review by Mozilla. All of the extensions I use (Stylus among them) are in this category. https://support.mozilla.org/en-US/kb/recommended-extensions-program https://support.mozilla.org/en-US/kb/recommended-extensions-...