A hoax 'alien invasion' alert in Brazil caused panic and amusement, revealing vulnerabilities in emergency systems.

Hackers breached Brazil’s national emergency alert system overnight on June 19 and 20, sending fake notifications to ...

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Alien invasion stories have been around for decades, and some of sci-fi's most interesting entries are often overlooked or ...

Residents of several cities in Brazil received notifications about an alien attack from the country's national civil defense.