The network emergency broadcasting USA is not safe

. Hacktivism

11:09:02 The network emergency broadcasting USA is not safe
The ' Emergency Alert System is a network of emergency that allows the U.S. president to stop all radio and television talking directly to the nation in case of extreme emergencies. The system was replaced in 1997, the Emergency Broadcast System counterpart, but neither of them has ever been activated (even on September 11, 2001), except for regional coverage, such as the famous 'Amber Alerts' with which you are this summer triggered the search for some missing children. Criticism against the system, however, are on the rise, declaring it obsolete in a thousand TV channels broadcast 24 hours a day. But the biggest problem seems to be the vulnerability of the system to spoofing, which if successfully brought by a criminal could diffuse the wrong message from broadcaster to broadcaster as a virus. The system works through the Federal Emergency Management Agency (FEMA) that activates the EAS through 34 radio stations scattered across the U.S., which are the 'primary entry points (PEPs)' of the system. All stations, typically news in AM, immediately interrupt their programming to broadcast the alert message. The message begins with a set of encoded data with a low-speed modem repeated three times, followed by a sound of attention than 8 seconds and the actual message to end with another data stream. The data are a starting time, a station identifier, a regional code, a scandenza and three letters that describe the type of alert. Starting from the radio the message is transmitted to the television stations over the air and cable which must re-transmit it. What is missing is an authentication system, so anyone can play the codes and transmit low-power can be propagate their message and not the final code even suspend broadcasts of the station until the intervention of a technician. The only current protection is the modem used, a 500 baud non-standard but it could be emulated by a PC through an ordinary sound card and specifications published by the FCC, which reflect another system used for transmissions of meteorological services to be announced forecasts of danger.