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Hacker sets off all 156 tornado sirens last night in Dallas. - Printable Version

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Hacker sets off all 156 tornado sirens last night in Dallas. - Aeolian - 04-11-2017

Quote: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.

The blaring sirens, used primarily to warn of tornadoes and other severe weather, prompted anxious residents to call 911, clogging up that system. At one point, 911 calls were backed up for six minutes instead of the normal wait time of 10 seconds.

Dallas spokeswoman Sana Syed said the 911 system was bombarded with over 4,400 calls between 11:30 p.m. and 3:00 a.m., double the number for a normal, eight-hour period overnight.

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.

Locating the hacker, however, "is going to be a very long process if we do find out who actually did it," Vaz said. The Federal Communication Commission is helping in the investigation, he added.

Source: https://www.usatoday.com/story/news/2017/04/08/hacker-triggers-all-156-emergency-sirens-dallas/100212412/


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - Dismas - 04-11-2017

Normally such antics would be funny, but slowing down law enforcement isn't funny in the slightest. Hopefully nobody was hurt (asides from their ears).


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - Skullmeat - 04-11-2017

This would be very easy to do, and difficult to track. Most of those tornado sirens are part of the SCADA system, and are controlled via DTMF over shortwave. It's simply a matter of finding the frequency that they broadcast on, listening for, recording, decoding the tones, then rebroadcasting them.


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - Synthx - 04-11-2017

This is insane. I dont understand why someone would want to cause that, cus what if a dangerous person caught on to something, and started running around killing people, and just so happened to pop in to the hackers house, and kill him, then the guy would be pissed in hell or heaven, wherever he goes in the scenario, that he wasnt able to get a first responder on the phone to help him.


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - Inori - 04-11-2017

I laughed because I'm a terrible person, but that's still pretty fucked up. Impressive nonetheless.


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - pvnk - 04-11-2017

I honestly died aha. Crazy.


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - Blink - 04-11-2017

I laughed.
I wanna see if they will actually find the guy.


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - m0dem - 04-11-2017

The part I'm suprised about is:
Quote:Dallas spokeswoman Sana Syed said the 911 system was bombarded with over 4,400 calls between 11:30 p.m. and 3:00 a.m., double the number for a normal, eight-hour period overnight.

They normally have 2,200 calls a night?! That's crazy.


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - Skullmeat - 04-11-2017

(04-11-2017, 03:25 AM)m0dem Wrote: The part I'm suprised about is:
Quote:Dallas spokeswoman Sana Syed said the 911 system was bombarded with over 4,400 calls between 11:30 p.m. and 3:00 a.m., double the number for a normal, eight-hour period overnight.

They normally have 2,200 calls a night?! That's crazy.

Dallas is a big city.


RE: Hacker sets off all 156 tornado sirens last night in Dallas. - m0dem - 04-11-2017

(04-11-2017, 04:09 AM)Skullmeat Wrote:
(04-11-2017, 03:25 AM)m0dem Wrote: The part I'm suprised about is:
Quote:Dallas spokeswoman Sana Syed said the 911 system was bombarded with over 4,400 calls between 11:30 p.m. and 3:00 a.m., double the number for a normal, eight-hour period overnight.

They normally have 2,200 calls a night?!  That's crazy.

Dallas is a big city.

Wikipedia states:
Quote:According to the 2010 United States Census, the city had a population of 1,197,816. The United States Census Bureau's estimate for the city's population increased to 1,300,092 as of July 1, 2015.
According to my calculations... at 2,200 911 calls a night, in 1 year there are 803,000 911 calls (2,200*365). In other words, over 60% of the Dallas population dials 911 once a year.
And as you may have noticed from the original post, the number 2,200 is just for 8 hours in the night!

Maybe that sounds reasonable, idk.