https://www.theregister.co.uk/2018/01/15/hawaiian_missile_warning/

Bad user interface design has been blamed for Hawaii experiencing a brief spate of nuclear panic over the weekend.

In case you missed the news, anyone with a smartphone in the island State on Saturday morning received an emergency message stating “BALLISTIC MISSILE THREAT INBOUND TO HAWAII. SEEK IMMEDIATE SHELTER. THIS IS NOT A DRILL.”