Add Yahoo as a preferred source to see more of our stories on Google. Imagine receiving an alert on your phone from a government agency at night, warning you about an alien attack, when you have ...

What happens when people who already believe in aliens are dropped into the middle of an elaborate extraterrestrial hoax? From a fake hospital emergency to terrifying UFO encounters, every prank ...

A hacker who breached Brazil's national emergency alert system and pushed fake 'alien attack' warnings to millions of phones overnight has handed cybersecurity experts a working demonstration of a ...

President Donald Trump’s administration on Friday asked the Supreme Court to wade into the fraught legal battle over enforcing the Alien Enemies Act, the wartime authority he used to rapidly deport ...