Lack of encryption blamed for false Dallas emergency sirens

DALLAS (AP) — Dallas officials concerned about hackers blame radio signal issues for more than 150 emergency outdoor sirens falsely sounding last weekend.
Dallas City Manager T.C. Broadnax on Monday said experts have determined the issue involved a radio system, not a computer issue. Broadnax says encryption has since been added.
PREVIOUS: Sirens go off throughout Dallas in system malfunction
Dallas officials initially blamed hackers for setting off the 156 sirens late Friday night and int