This Radio Hacker Could Hijack Emergency Sirens to Play Any Sound

This Radio Hacker Could Hijack Emergency Sirens to Play Any Sound

At exactly noon on the first Tuesday after Balint Seeber moved from Silicon Valley to San Francisco in late 2015, the Australian radio hacker and security researcher was surprised to discover a phenomenon already known to practically every other resident of the city: a brief, piercing wail that rose and then fell, followed by a …