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 ...

A full breakdown of every emergency phone alert in existence gets ranked by how many people have actually received one, starting with the well-known Amber Alert and ending with an alert for alien ...