3.3 Trojan Programs in Mobile Communication Systems
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Microphone
Oscillator
Fig. 3.12 Placing a mini spy in the battery section of a mobile phone
Base station 3
Frequency 896 MHz
Base station 2
Frequency 920 MHz
Base station 1
Frequency 902 MHz
Base station
Frequency 902 MHz
Broadcast:
"Ezhikovo, N region"
List of neighbors:
Base 2
Base 3
Telephone
Duty base: Base 1
Signal level: …
Delay time: …
Other parameters
Neighbors:
Base 2. Signal level: …
Base 3. Signal level: …
Fig. 3.13 Determining mobile phone position using three-point position finding [17]