[6a68]

Are you talking about the doorhanger that appears when you try to install the add-on?

Firefox always shows a warning doorhanger if an add-on is installed from a website other than addons.mozilla.org.

What you're seeing is a Mozilla web property following the same rules as every other website. Nothing to worry about.

[dfc]

What you are seeing is an eve.com web property following the same rules as every other website. Nothing to worry about, install malware...

Why is the add-on not hosted on addons.m.o? I thought mozilla thought there was some benefit to users when they only installed things from addons.m.o.

[lmorchard]

A few reasons, among which is that the addon needs an account on the Test Pilot site to work. It's not a standalone add-on, so we didn't want to distribute it that way. And we may eventually even migrate away from using an AMO compatible add-on.

That said, we are also contemplating AMO hosting as an interim step. At the same time, we're having a conversation about how alarming those warning messages look. We were also trying this way to kind of dogfood self-hosted addons outside of AMO. So, lots of things converging on this one thing :/

[danielweber]

What is a doorhanger?

[chuckharmston]

A doorhanger is a term for this sort of warning notification: http://i.imgur.com/huWjWjq.png

As 6a68 mentioned, Firefox presents this doorhanger whenever any site other than addons.mozilla.org attempts to install an add-on.

[6a68]

A 'doorhanger' is this bit of UI: https://www.dropbox.com/s/8yivzcq2gw63pqq/Screen%20Shot%2020...