Hackers Blast Emergency Sirens in Dallas

Hackers Blast Emergency Sirens in Dallas

By John P. Mello Jr.

Apr 11, 2017 5:00 AM PT

Screaming sirens serenaded Dallas residents in the early morning hours Saturday after a cyberattack set off the city’s emergency warning system.

All of the city’s 156 sirens were set off more than a dozen times, The Dallas Morning News reported.

Officials have not yet identified the perpetrator of the attack, the city’s Office of Emergency Management Director Rocky Vaz told the newspaper, but he expressed confidence that it was someone outside the Dallas area.

The city has figured out how the system was compromised and has begun working to keep it from happening again, he added.

The sirens began sounding about 12:30 a.m. Saturday and weren’t silenced until 1:20 a.m., when the entire system was deactivated.

Despite the city’s pleas not to make 911 calls about the sirens, emergency operators were swamped with 4,400 calls during the early morning hours Saturday.

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