Over the weekend, hackers took control of traffic signals in cities like Palo Alto and Menlo Park, changing pedestrian crossings to play humorous, mocking audio clips that sounded suspiciously like ...

More details have emerged about how anonymous hackers in Silicon Valley were able to reprogram crosswalk signals in various locations to say prank messages in the voices of tech billionaires Elon Musk ...

The latest headlines from our reporters across the US sent straight to your inbox each weekday Your briefing on the latest headlines from across the US An investigation by the Palo Alto Daily Post, ...