Computer hack sets off 156 emergency sirens across Dallas

“A computer hack set off all the emergency sirens in Dallas for about 90 minutes overnight in one of the largest known breaches of a siren warning system, officials in the Texas city said on Saturday.

Dallas’ 156 sirens, normally used to warn of tornadoes and other dangerous weather, were triggered at 11:42 p.m. CDT on Friday. The wailing did not end until 1:17 a.m. CDT on Saturday when engineers manually shut down the sirens’ radio system and repeaters, city Emergency Management Director Rocky Vaz said.

“At this point, we can tell you with a good deal of confidence that this was somebody outside of our system that got in there and activated our sirens,” he told reporters.”

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Author: Ian Simpson, Reuters