[EAS] Dallas warning sirens hacked - maybe

[Bill Ruck]

Many years ago the engineering firm I work with was retained to 
evaluate a siren warning system.

I gave them a step-by-step process how someone with only public 
knowledge could activate the sirens.

The report was not favorably received and the agency went forward 
with the implementation anyway.

Sigh.

For a long time San Francisco's siren system could be activated with 
no more than a two-tone paging sequence.  Until someone realized this 
and activated them.

The U.S. Navy taught me that any form of communications can be 
compromised.  How hard it will take and how long it will take is the 
only difference between systems.

Bill Ruck
Curmudgeon
San Francisco