Emma Roth, writing for The Verge:

Airbnb lit up Android phones around the globe with a notification that reads: "Test dev." The apparent blunder occurred early Wednesday morning, and judging by how many users are posting about it on Twitter, it seems like a lot of people received the accidental alert (via 9to5Google).

[...]

Burger King made a similar mistake last week when it emailed thousands of customers a blank order receipt and said it was caused by an internal processing issue. The “Test dev” notification might’ve been accidentally sent by a developer working on the app, but at least we can say whatever they’re testing over at Airbnb probably works