Dallas Investigates Emergency Siren Hack
Thursday, April 13, 2017 | Comments

Dallas City Manager T.C. Broadnax said city staff is continuing to test the outdoor warning siren system and determine next steps after the city’s siren system was compromised the night of April 7.

At 11:42 p.m. April 7, all 156 sirens in the city of Dallas were activated. For security reasons, Broadnax did not discuss the details of the compromise but said the siren system was hacked.

“We believe it came from the Dallas area,” Broadnax said in a statement. “We are taking Friday night’s incident very seriously.”

In addition to the city siren system, the city is looking at other critical systems to examine what, if any, vulnerabilities may exist. The systems include the water system, radio network, 9-1-1 and 3-1-1, police and fire dispatch, flood warning system and financial systems.

The city implemented several improvements to prevent a hack from happening again. Dallas officials added extra encryption and other security measures to the system. The Dallas Police Department (DPD), FBI and other federal partners are investigating the incident.

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