Imagine receiving an alert on your phone from a government agency at night, warning you about an alien attack, when you have barely made it onto your bed. That is what happened to thousands of ...

A hoax 'alien invasion' alert in Brazil caused panic and amusement, revealing vulnerabilities in emergency systems. Authorities are investigating the breach.

A test emergency alert dispatched to nearly every smartphone in the UK on Sunday, September 7 has triggered wild fears. A message will be delivered to almost every active iPhone and Android handset ...