Hack caused Dallas’ emergency sirens to sound in error

DALLAS (AP) — Officials say Dallas’ emergency siren system was hacked, resulting in them sporadically sounding for about an hour and a half overnight.
City spokeswoman Sana Syed said Saturday that investigators believe the hack came from the Dallas area. Office of Emergency Management Director Rocky Vaz said his office eventually had to shut down the system.
Officials say all of the city’s 156 outdoor sirens that are used to alert people to shelter indoors during severe weather