Patent ID: 8350725
Filing Date: 2013-01-08
Classification: H04B,H04L,H04W

Abstract:
1. A method for detecting attempts at intruding on a communication link between an aircraft and a ground station, the communication link having a plurality of security configurations, each configuration having a respective level of security, the method comprising the following steps: a) when a message is received by a receiving section associated with the communication link, analyzing the message to determine a security level corresponding to the message; b) comparing the security level corresponding to the received message with a security level associated with the communication link; b1) checking a communication state associated with the communication link to determine whether the level of security of the communication link is established in a stable manner; and c) if the security levels compared in step b) are different, and if the communication state determined in step b1) is not stable, effecting an action relating to rejection of the received message and signaling of an intrusion attempt.