On the Requirements for Successful GPS Spoofing Attacks

Tippenhauer, Nils Ole and Pöpper, Christina and Rasmussen, Kasper Bonne and \vCapkun, Srdjan
(2011) On the Requirements for Successful GPS Spoofing Attacks.
In: Proceedings of the ACM Conference on Computer and Communications Security (CCS).
Conference: CCS ACM Conference on Computer and Communications Security

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An increasing number of wireless applications rely on GPS signals for localization, navigation, and time synchronization. However, civilian GPS signals are known to be susceptible to spoofing attacks which make GPS receivers in range believe that they reside at locations different than their real physical locations. In this paper, we investigate the requirements for successful GPS spoofing attacks on individuals and groups of victims with civilian or military GPS receivers. In particular, we are interested in identifying from which locations and with which precision the attacker needs to generate its signals in order to successfully spoof the receivers. We will show, for example, that any number of receivers can easily be spoofed to one arbitrary location; however, the attacker is restricted to only few transmission locations when spoofing a group of receivers while preserving their constellation. In addition, we investigate the practical aspects of a satellite-lock takeover, in which a victim receives spoofed signals after first being locked on to legitimate GPS signals. Using a civilian GPS signal generator, we perform a set of experiments and find the minimal precision of the attacker's spoofing signals required for covert satellite-lock takeover.


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