FEMA and the FCC to test national emergency alert systems on October 4
Mobile users cannot opt out of the test
FCC changes how emergency alerts are issued in the US
The emergency alert system in the US is getting a new coat of paint
Flaws in LTE can allow hackers to easily spoof presidential alerts
Achievable through open-source software and commercially available hardware
'Presidential Alert' wireless emergency test is happening today
Nationwide test of wireless emergency alert system is coming up