We've updated the notification to be:

There have been 6 failed attempts to log in to your account from a new device since the last time you logged in. If it wasn't you, please make sure your account has a strong password.

Does that resolve this ticket?

Great! It's definitely better. Do I take it you don't want to split the message up between header and body?

In T164286#3228915, @jmatazzoni wrote:

Great! It's definitely better. Do I take it you don't want to split the message up between header and body?

Hmm, I'm not clear what you mean by header message and body message. Since it's a cross-wiki bundle, there doesn't seem to be a reliable way to show them the complete message, no matter what wiki they are on (besides shortening it and showing the whole thing).
Marking the bundle as read splits it into shorter, generic messages like "There have been multiple failed attempts to log in to your account from a new device. Please make sure your account has a strong password."" to avoid long, duplicate messages which would feel more spammy.

Hmm, I'm not clear what you mean by header message and body message.

There are two possible parts to any notification. The header, in bold, and the body, in a light gray text—usually used for excerpts. If you want the user to see the whole thing in a bundle, then you're right, the body wouldn't be shown. So, yeah, that seems like a good change.

What it looks like now:

much better. Thanks.