Gsm+secret+firmware -

Not all secret firmware is malicious. It generally falls into three distinct categories:

Skeptics often ask: Is this just conspiracy theory? gsm+secret+firmware

The answer is no. Here is documented evidence: Not all secret firmware is malicious

If you place your phone in a shielded Faraday bag, no radio frequency (GSM, Wi-Fi, Bluetooth) can enter or exit. This physically blocks any secret firmware from receiving commands. When you remove the phone, assume it may have been listening internally, but cannot transmit. no radio frequency (GSM

Once an attacker controls the baseband: