Cities' emergency sirens will play anything you send them over an unencrypted radio protocol

It's been a year since someone hacked all 156 of Dallas's emergency tornado sirens, setting them off in the middle of the night, and the security picture for cities' emergency PA systems keeps getting uglier. Read the rest

The London Underground thinks it can sell travelers' attention and wifi data for £322m

Since late 2016, the Transport for London has been running a pilot scheme, providing wifi to passengers while logging and retaining all the wifi traffic coming in and out of its access points, compiling a massive dossier on every tube-rider who had wifi turned on for their devices, whether or not they ever accessed the wifi service. Read the rest