So about those sirens last night in Dallas- it was supposedly hackers

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Dallas city officials said Saturday that a hacker is to blame for setting off all the city's 156 emergency outdoor sirens, which wailed for an hour and half overnight.

Rocky Vaz, director of the city's Office of Emergency Management, said engineers determined an unidentified hacker somewhere in the Dallas area was responsible, but has not been tracked down.

The hacker tricked the system to send repeat signals activating each siren 60 times during the night, Vaz said. The sirens started sounding at 11:42 p.m. Friday and continued until 1:17 a.m. Saturday

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Mayor Mike Rawlings said in a statement that the hack was an attack on Dallas' emergency notification system, and that the city will "find and prosecute whomever is responsible."

"This is yet another serious example of the need for us to upgrade and better safeguard our city's technology infrastructure," he posted on Facebook. "It's a costly proposition, which is why every dollar of taxpayer money must be spent with critical needs such as this in mind. Making the necessary improvements is imperative for the safety of our citizens."

Vaz said he expects the emergency siren system to be back in operation by Monday afternoon.

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