False alarms: hackers take over Dallas's 156 sirens before system deactivated

Unknown hackers triggered about 15 alarm cycles before city officials took down emergency notification system used during inclement weather eventsHackers took control over the 156 sirens in Dallas this weekend, triggering false alarms on the system used to alert residents to take shelter from inclement weather, until officials deactivated the system early Saturday morning.The person or people responsible were able to hack into a part of the system that was communicating with all 156 of the city&