I should have seen it coming.
First, I’m on the phone to Microsoft *again* because the it turns out the issue I raised to return the replacement Touch cover wasn’t actually created. So the whole process of doing that again.
Then email from Twitter telling me my account was one of the ones that had its details compromised and that I needed to change my password. A fairly simple process I guess, but with all the various devices and apps that hook into Twitter it seemed more painful than it should have been.