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).
https://www.theverge.com/2022/8/17/23309796/airbnb-android-users-accidental-test-notification